Peptide index

A small-molecule NNMT inhibitor that raises intracellular NAD+ in fat cells and pushes them toward burning energy rather than storing it - popular precisely because it is an oral capsule.

Body Composition, Anabolic & Performance

A PTH-related-protein analogue that builds bone as fast as teriparatide with less hypercalcaemia, used for osteoporosis at very high fracture risk.

Clinical Endocrine & Hormone Analogues

The first GnRH antagonist approved for advanced prostate cancer — it dropped testosterone in days with no flare, then was pulled from the market because a small percentage of men had immediate systemic allergic reactions.

Oncology, Radiopharmaceutical & Diagnostic

A decoy activin receptor fused to an antibody Fc that soaks up myostatin and its relatives, producing rapid lean mass gain - and the vascular side effects that killed its clinical programme.

Body Composition, Anabolic & Performance

The seven-residue behaviourally active core of ACTH, stripped of its steroid-releasing activity, studied for decades for attention and memory and best known now as the fragment Semax was built from.

Cognitive & Nootropic

A calf-blood extract injected into injured muscle in European sports medicine, credited with faster return to play but built on a poorly characterised mixture rather than a defined drug.

Healing, Repair & Regenerative

Experimental pro-apoptotic peptidomimetic that kills the blood supply feeding white adipose tissue - it works in animals and it damaged their kidneys doing it.

Incretin & Metabolic (GLP-1 / GIP / Glucagon / Amylin)

A liver- and brain-secreted peptide that tells the body whether to burn carbohydrate or fat and keeps the vascular endothelium healthy; low levels track with insulin resistance and cardiovascular disease in humans.

Emerging & Frontier Research

GHK-Cu's less-famous cousin, used almost entirely in scalp serums to push VEGF from dermal papilla cells and improve follicle blood supply.

Cosmetic, Skin & Hair

An AMPK-activating nucleoside that mimics the cellular energy-deficit signal of exercise - the original 'exercise in a pill', and one of the first compounds WADA banned for that reason.

Body Composition, Anabolic & Performance

Albumin-fused weekly GLP-1 agonist that was withdrawn commercially in 2018 despite a positive cardiovascular outcomes trial - historically important, practically extinct.

Incretin & Metabolic (GLP-1 / GIP / Glucagon / Amylin)

The natural thirteen-amino-acid melanocortin that shuts down NF-kB-driven inflammation across nearly every tissue, and the parent molecule of both KPV and the melanotans.

Immune, Thymic & Anti-Inflammatory

Single-molecule GLP-1 and amylin co-agonist from Novo Nordisk with the steepest early weight-loss curve reported to date - about 22% in 36 weeks in a phase 1b/2a study.

Incretin & Metabolic (GLP-1 / GIP / Glucagon / Amylin)

A recombinant interleukin-1 receptor antagonist injected daily that blocks IL-1 signalling outright, used in rheumatoid arthritis, Still's disease and the autoinflammatory syndromes.

Immune, Thymic & Anti-Inflammatory

An oral ghrelin-receptor agonist approved in Japan for cancer cachexia, which reliably increases appetite, body weight and lean mass but has never shown a matching improvement in strength or survival.

Growth Hormone Secretagogues & GHRH Analogues

The protective counter-arm of the renin-angiotensin system, a short peptide that opposes fibrosis, inflammation and vasoconstriction rather than driving them.

Cardiometabolic, Vascular & Renal

Synthetic human angiotensin II used as a rescue vasopressor drip when noradrenaline and vasopressin are not holding blood pressure up in septic or distributive shock.

Cardiometabolic, Vascular & Renal

A modified C-terminal fragment of growth hormone marketed for fat loss without GH's effects on blood sugar or IGF-1, which is true - but the human weight-loss data is essentially negative.

Growth Hormone Secretagogues & GHRH Analogues

An endogenous peptide that makes the heart contract harder while dilating blood vessels, a rare combination that has made it a long-standing heart failure research target.

Cardiometabolic, Vascular & Renal

A highly selective antibody that blocks myostatin before it is activated, developed for spinal muscular atrophy and now being tested to protect muscle during GLP-1 weight loss.

Body Composition, Anabolic & Performance

A once-weekly GLP-2 analogue that hit its phase 3 endpoint in short bowel syndrome and would replace daily teduglutide injections — if the FDA had not asked for another trial first.

Gut & Gastrointestinal

An 11-amino-acid fragment of erythropoietin that keeps EPO's tissue-repair signalling for damaged nerves while dropping the blood-thickening effect entirely.

Healing, Repair & Regenerative

An 11-amino-acid fragment of erythropoietin stripped of its blood-building activity, used to regrow damaged small nerve fibres and reduce the burning pain of sarcoidosis and diabetic neuropathy.

Pain, Analgesia & Neuromodulation

A SNAP-25 mimic applied to the skin to blunt micro-contractions in expression lines — real but modest, and nothing like an injection of botulinum toxin.

Cosmetic, Skin & Hair

An oxytocin receptor blocker infused to hold off preterm labour for a couple of days, long enough to give steroids and move the mother to a unit with a neonatal ICU.

Clinical Endocrine & Hormone Analogues

The cyclic peptide antibiotic in almost every tube of over-the-counter wound ointment, effective against gram-positive skin flora topically and far too nephrotoxic to inject.

Antimicrobial & Antiviral Peptides

Chinese-approved full-length recombinant human GLP-1, identical to the natural hormone and therefore dosed three times daily before meals.

Incretin & Metabolic (GLP-1 / GIP / Glucagon / Amylin)

A monoclonal antibody that blocks activin type II receptors, simultaneously adding lean mass and stripping fat mass - now being developed mainly to stop GLP-1 users from losing muscle.

Body Composition, Anabolic & Performance

GHK with a biotin group attached, used in scalp serums to strengthen the follicle's anchoring in the dermis and reduce hair fall.

Cosmetic, Skin & Hair

A hirudin-derived direct thrombin inhibitor given as an IV drip during angioplasty and stenting, mainly when heparin cannot be used.

Cardiometabolic, Vascular & Renal

A dipeptide boronic acid that jams the cell's protein-shredding machinery, which plasma cells depend on more than any other cell type — the drug that rewrote multiple myeloma survival.

Oncology, Radiopharmaceutical & Diagnostic

The bacterial neurotoxin that actually paralyses mimetic muscle — not a peptide in any useful sense, but the benchmark every topical 'peptide Botox' is measured against and loses to.

Cosmetic, Skin & Hair

The best-known repair peptide, used for tendon, ligament, gut and nerve injuries on the strength of a very large rodent literature and essentially no completed human efficacy trials.

Healing, Repair & Regenerative

A stable fragment of a protein found in gastric juice, originally developed as an inflammatory bowel disease drug, that people take orally to try to heal ulcers, leaky gut and NSAID-induced stomach damage.

Gut & Gastrointestinal

A two-peptide gut-directed blend pairing BPC-157 with KPV, sold both as injectable vials and as delayed-release oral capsules, and the one blend where the oral route is the sensible one.

Multi-Peptide Blends

The arginine-salt form of BPC-157, sold because it holds up far better in solution and at room temperature than the usual acetate salt.

Healing, Repair & Regenerative

A 12-amino-acid peptide found by AI screening at Stanford that suppresses appetite through hypothalamic POMC neurons without nausea - impressive in mice and pigs, untested in humans.

Incretin & Metabolic (GLP-1 / GIP / Glucagon / Amylin)

A 12-amino-acid peptide found by an AI prohormone-cleavage screen at Stanford that cuts food intake by up to half in rodents and pigs through hypothalamic POMC neurons, apparently without the nausea that limits GLP-1 drugs.

Emerging & Frontier Research

A myristoylated 47-amino-acid lipopeptide that plugs the NTCP receptor hepatitis D uses to get into liver cells — the first and only approved treatment for chronic hepatitis delta, the deadliest form of viral hepatitis.

Antimicrobial & Antiviral Peptides

Weekly amylin and calcitonin receptor agonist that produces satiety through a completely separate pathway from GLP-1 and appears to preserve lean mass better than incretins alone.

Incretin & Metabolic (GLP-1 / GIP / Glucagon / Amylin)

Fixed-dose weekly combination of the amylin analogue cagrilintide with semaglutide, giving about 20% weight loss by hitting two independent satiety pathways at once.

Incretin & Metabolic (GLP-1 / GIP / Glucagon / Amylin)

A salmon-derived calcium-lowering hormone used for Paget's disease, acute hypercalcaemia and the pain of recent osteoporotic vertebral fracture, now largely displaced by better drugs.

Clinical Endocrine & Hormone Analogues

A hair complex pairing a matrix-strengthening tetrapeptide with a red clover isoflavone that inhibits 5-alpha-reductase, attacking both the follicle's anchoring and its DHT exposure.

Cosmetic, Skin & Hair

A long-acting oxytocin analogue given as a single shot after delivery to clamp the uterus down and prevent postpartum haemorrhage, in a heat-stable form that survives without refrigeration.

Clinical Endocrine & Hormone Analogues

Myocardium-directed tetrapeptide taken in short courses for cardiac muscle support, usually alongside the vascular bioregulators as the heart half of a Russian cardiovascular protocol.

Khavinson Bioregulators (Cytogens & Cytomaxes)

A tetrapeptide epoxyketone that binds the proteasome irreversibly — more potent than bortezomib and far less neurotoxic, at the cost of a real cardiovascular signal.

Oncology, Radiopharmaceutical & Diagnostic

A dipeptide concentrated in muscle and brain that buffers acid during hard efforts and mops up the reactive carbonyls that glycate proteins as you age.

Longevity, Mitochondrial & Senolytic

Recombinant atrial natriuretic peptide, approved only in Japan, infused to vasodilate and offload the heart in acute heart failure.

Cardiometabolic, Vascular & Renal

The first echinocandin antifungal, a cyclic lipopeptide that dissolves the fungal cell wall and is first-line intravenous therapy for invasive candidiasis and candidaemia.

Antimicrobial & Antiviral Peptides

A designer natriuretic peptide fusing C-type and mamba-venom peptides, built to unload the heart and protect the kidney without dropping blood pressure as hard as BNP does.

Cardiometabolic, Vascular & Renal

An enzymatically digested porcine brain extract of low-molecular-weight neuropeptides and free amino acids, given by injection or infusion in Europe and Asia for stroke, traumatic brain injury and dementia.

Cognitive & Nootropic

Calf brain peptide extract in capsule form, taken in monthly courses for cognitive and nervous-system support - the CNS entry in the Cytomax line and a cousin of the injectable Cortexin used in Russian neurology.

Khavinson Bioregulators (Cytogens & Cytomaxes)

A GnRH antagonist that blocks the premature LH surge in IVF cycles immediately, with no flare and no waiting period.

Sexual Health, Melanocortin & Reproductive

CGRP is the neuropeptide that actually causes a migraine attack, and blocking it — with monthly antibodies or on-demand oral gepants — is the first genuinely mechanism-based migraine therapy ever built.

Pain, Analgesia & Neuromodulation

A scorpion venom peptide that sticks to brain tumour cells and nothing else — tagged with a fluorescent dye it makes glioma margins glow green during surgery, and it is now being used as the targeting arm of CAR-T cells.

Pain, Analgesia & Neuromodulation

Bronchopulmonary tripeptide aimed at respiratory epithelium, used in short courses by people with chronic bronchitis, post-viral lung symptoms or heavy environmental exposure.

Khavinson Bioregulators (Cytogens & Cytomaxes)

A GHRH analogue carrying a maleimide linker that binds covalently to serum albumin, converting a 30-minute peptide into one that raises GH and IGF-1 for the better part of a week.

Growth Hormone Secretagogues & GHRH Analogues

A short-acting GHRH(1-29) fragment with four amino-acid substitutions that resist enzymatic breakdown, almost always injected alongside a GHRP such as ipamorelin to produce a large synchronised GH pulse.

Growth Hormone Secretagogues & GHRH Analogues

The other polymyxin, given as an inactive prodrug that converts to active colistin in the body, revived as salvage therapy for carbapenem-resistant Acinetobacter, Pseudomonas and Klebsiella.

Antimicrobial & Antiviral Peptides

Enzymatically broken-down collagen taken orally, where the surviving di- and tripeptides act as signalling fragments telling fibroblasts to build more matrix.

Healing, Repair & Regenerative

A proline-rich polypeptide complex from colostrum, taken sublingually, that modulates cytokine balance and has been trialled in mild Alzheimer's disease with modest results.

Immune, Thymic & Anti-Inflammatory

Oral immunoglobulin and growth-factor fractions from bovine colostrum, taken in gram quantities to bind gut antigens and support mucosal barrier repair — the most accessible and best-tolerated thing in this category.

Gut & Gastrointestinal

Cerebral cortex tetrapeptide used after head injury or peripheral nerve damage, and the one Cytogen with a plausible nerve-regeneration story rather than a purely epigenetic one.

Khavinson Bioregulators (Cytogens & Cytomaxes)

A bovine cerebral cortex peptide extract given intramuscularly in Russian neurology for encephalopathy, post-stroke recovery, childhood developmental delay and cognitive decline.

Cognitive & Nootropic

A slow-release porcine ACTH gel that drives the adrenals to make cortisol, still used for infantile spasms, MS relapses and steroid-refractory autoimmune disease at an extraordinary price.

Clinical Endocrine & Hormone Analogues

A somatostatin cousin that binds every somatostatin receptor but also hits the ghrelin and MRGPRX2 receptors, giving it a genuinely distinct profile in slow-wave sleep, inflammation and fibrosis.

Emerging & Frontier Research

The synthetic first 24 residues of ACTH, injected as a single dose to see whether the adrenal glands can still make cortisol.

Clinical Endocrine & Hormone Analogues

AstraZeneca's daily GLP-1 and glucagon dual agonist, studied mainly in diabetic kidney disease and liver disease and now largely deprioritised.

Incretin & Metabolic (GLP-1 / GIP / Glucagon / Amylin)

A family of peptide blockers of the body's master stress hormone, used in the lab to shut down CRF signalling and studied for stress-driven anxiety, depression, gut dysfunction and insomnia.

Sleep, Circadian & Mood

A Khavinson tripeptide bioregulator marketed for thymic and immune support, taken as short oral courses a few times a year.

Immune, Thymic & Anti-Inflammatory

The archetypal peptide immunosuppressant - a cyclic eleven-residue fungal peptide that shuts down T-cell activation and made organ transplantation routine.

Immune, Thymic & Anti-Inflammatory

Plant peptides with a head-to-tail cyclic backbone locked by a knotted disulfide core, so stable they survive boiling and gut proteases — used as scaffolds to make other peptides orally bioavailable rather than as drugs themselves.

Emerging & Frontier Research

A peripherally restricted leu-enkephalin analogue used in Russian medicine for pancreatitis, peptic ulcer and surgical stress protection, which does not cross the blood-brain barrier and therefore does not get you high.

Cognitive & Nootropic

A lipoglycopeptide with a two-week half-life, meaning a single intravenous dose can treat an entire skin infection and send the patient home without a line.

Antimicrobial & Antiviral Peptides

A four-residue, highly water-soluble mu-opioid peptide designed to stay outside the brain — chiefly important today because its scaffold became SS-31, the mitochondrial peptide.

Pain, Analgesia & Neuromodulation

Pfizer's oral small-molecule GLP-1 agonist, discontinued after a liver-injury signal - the cautionary reference compound for the whole oral incretin class.

Incretin & Metabolic (GLP-1 / GIP / Glucagon / Amylin)

Zealand's GLP-1 and GLP-2 dual agonist, unusual in the class for targeting gut barrier integrity and inflammation alongside weight.

Incretin & Metabolic (GLP-1 / GIP / Glucagon / Amylin)

A calcium-dependent cyclic lipopeptide that punches holes in the gram-positive cell membrane, used mainly for MRSA bacteraemia and skin infection — and never for pneumonia, because lung surfactant destroys it.

Antimicrobial & Antiviral Peptides

An eight-residue fragment of activity-dependent neuroprotective protein that stabilises microtubules and reduces tau hyperphosphorylation, and which failed a large phase 3 trial in progressive supranuclear palsy.

Cognitive & Nootropic

Peptides and small proteins invented from nothing by diffusion models rather than found in nature, now routinely producing picomolar-to-nanomolar binders against targets that had no drug-like chemistry at all.

Emerging & Frontier Research

A non-cytotoxic tyrosinase inhibitor developed as a hydroquinone alternative, with real published melasma data behind it — unusual for this category.

Cosmetic, Skin & Hair

The cationic host-defence peptide family that punches holes in microbial membranes and simultaneously recruits immune cells - a template class for drug design rather than a single purchasable compound.

Immune, Thymic & Anti-Inflammatory

A GnRH antagonist that drops testosterone to castrate levels within three days and, unlike the agonist depots, never causes a hormone flare.

Sexual Health, Melanocortin & Reproductive

A frog-skin opioid peptide roughly thirty to forty times more potent than morphine at the mu receptor, with no human dosing data at all — it is a laboratory tool and a horse-racing doping scandal, not a usable analgesic.

Pain, Analgesia & Neuromodulation

A recombinant leech-derived thrombin inhibitor injected under the skin to prevent deep vein thrombosis after hip replacement, now largely off the market.

Cardiometabolic, Vascular & Renal

A vasopressin analogue stripped of blood-pressure effects that concentrates urine, and which at higher doses also dumps stored von Willebrand factor to stop bleeding.

Clinical Endocrine & Hormone Analogues

A kappa opioid agonist built so it cannot enter the brain, approved for the relentless itch of dialysis patients and studied for pain without the euphoria, dysphoria or addiction of a normal opioid.

Pain, Analgesia & Neuromodulation

A blood-brain-barrier-penetrant angiotensin IV derivative that potentiates hepatocyte growth factor at the c-Met receptor and, in rodents, drives synapse formation orders of magnitude more potently than BDNF.

Cognitive & Nootropic

A nine-amino-acid peptide first pulled out of rabbit brain blood in the 1970s that people inject before bed to deepen slow-wave sleep and fall asleep faster.

Sleep, Circadian & Mood

Weekly GLP-1-Fc fusion protein used mainly for type 2 diabetes, with good glycaemic control but only modest weight effects.

Incretin & Metabolic (GLP-1 / GIP / Glucagon / Amylin)

A recombinant kallikrein inhibitor injected to abort hereditary angioedema attacks upstream of bradykinin, but with a real anaphylaxis risk that keeps it clinician-administered.

Cardiometabolic, Vascular & Renal

cAMP-biased long-acting GLP-1 analogue newly approved in China for weight management, delivering about 13% placebo-adjusted weight loss at 2.4 mg weekly.

Incretin & Metabolic (GLP-1 / GIP / Glucagon / Amylin)

GLP-1 and glucagon dual agonist being developed by Merck primarily as a liver drug, after producing a roughly 73% reduction in liver fat over 24 weeks.

Incretin & Metabolic (GLP-1 / GIP / Glucagon / Amylin)

Long-acting exendin-based GLP-1 agonist notable for the AMPLITUDE-O trial, which showed cardiovascular and kidney benefit in a high-risk diabetic population.

Incretin & Metabolic (GLP-1 / GIP / Glucagon / Amylin)

A human elastase inhibitor given intravenously in clinical trials to protect gut, lung and vascular tissue from neutrophil-driven damage after major surgery or severe inflammation.

Healing, Repair & Regenerative

Eli Lilly's selective amylin receptor agonist, which produced roughly 20% weight loss in phase 2 with a strikingly clean gastrointestinal profile.

Incretin & Metabolic (GLP-1 / GIP / Glucagon / Amylin)

The encapsulated oral form of Epithalamin - 10 mg of calf pineal peptide complex per capsule, taken for a month at a time as the flagship product of the Khavinson supplement line.

Khavinson Bioregulators (Cytogens & Cytomaxes)

The most mu-selective natural opioid peptides known, and the scaffold behind the long-running attempt to build an opioid that kills pain without stopping your breathing.

Pain, Analgesia & Neuromodulation

A 36-amino-acid peptide that jams the HIV envelope's fusion machinery shut, the first peptide antiretroviral ever approved and still a salvage option in multidrug-resistant HIV.

Antimicrobial & Antiviral Peptides

The body's own five-residue opioids — too short-lived to inject usefully, but the reason enkephalinase inhibitors and low-dose naltrexone protocols exist at all.

Pain, Analgesia & Neuromodulation

The first PCSK9 inhibitor you can swallow - a once-daily oral macrocyclic peptide that cuts LDL cholesterol by roughly half, matching injectable antibodies.

Cardiometabolic, Vascular & Renal

A four-amino-acid pineal peptide taken in short twice-yearly courses to restore melatonin rhythm and, according to Russian research, activate telomerase and extend lifespan.

Longevity, Mitochondrial & Senolytic

A four-amino-acid pineal peptide taken in short annual courses to pull a flattened, age-related melatonin rhythm back into a normal night-time peak.

Sleep, Circadian & Mood

The original bovine pineal peptide extract behind the whole Khavinson programme, injected in ten-day courses for circadian and neuroendocrine normalisation, and the compound used in the only long-term human mortality study the category has.

Khavinson Bioregulators (Cytogens & Cytomaxes)

A snake-venom-derived cyclic peptide drip that blocks the final common step of platelet clumping during heart attacks and stenting.

Cardiometabolic, Vascular & Renal

A D-amino-acid peptide calcimimetic pushed straight into the dialysis line three times a week to bring down parathyroid hormone in kidney failure, without the nausea that sinks oral cinacalcet.

Clinical Endocrine & Hormone Analogues

Gila-monster-venom-derived GLP-1 mimetic - the original incretin drug, and still the reference exendin scaffold that most long-acting analogues are built on.

Incretin & Metabolic (GLP-1 / GIP / Glucagon / Amylin)

Cell-derived nanovesicles loaded with or displaying regenerative peptides, used to get cargo across barriers that free peptides cannot cross — scientifically real, commercially a swamp.

Emerging & Frontier Research

An anti-puffiness tetrapeptide for under-eye bags that works on fluid retention and capillary leak rather than on wrinkles or pigment.

Cosmetic, Skin & Hair

A 15-residue mimetic of the neural cell adhesion molecule's FG loop that activates FGF receptor 1 and promotes synaptogenesis and memory consolidation in rodents.

Cognitive & Nootropic

The mature circulating form of follistatin, with lower affinity for cell-surface heparan sulfate than FST-288 and therefore more systemic distribution.

Body Composition, Anabolic & Performance

A myostatin- and activin-binding glycoprotein that removes the brake on muscle growth - and the most heavily counterfeited product in the peptide market.

Body Composition, Anabolic & Performance

Recombinant follicle-stimulating hormone, the workhorse of ovarian stimulation and, paired with hCG, the drug that actually restores sperm production in men.

Sexual Health, Melanocortin & Reproductive

A mirror-image peptide that pries p53 away from FOXO4 inside senescent cells, forcing the zombie cells that accumulate with age to finally undergo apoptosis.

Longevity, Mitochondrial & Senolytic

The PET tracer version of Lutathera — the same somatostatin-seeking peptide carrying an imaging isotope instead of a therapeutic one, used to find neuroendocrine tumours and decide who can be treated.

Oncology, Radiopharmaceutical & Diagnostic

A PSMA-targeted PET tracer that finds prostate cancer deposits far smaller than CT or bone scan can see, and decides who is eligible for PSMA radioligand therapy.

Oncology, Radiopharmaceutical & Diagnostic

A third-generation GnRH antagonist supplied in a ready-to-use prefilled syringe, doing the same job as cetrorelix in IVF with no mixing step.

Sexual Health, Melanocortin & Reproductive

The circulating factor from the young-blood parabiosis experiments, proposed as a systemic rejuvenation signal — and then substantially contradicted by the follow-up work.

Longevity, Mitochondrial & Senolytic

The brainstem stress signal that causes profound appetite loss — being pushed as an agonist for obesity and blocked as an antagonist for cancer cachexia, with the antagonist side now the more convincing of the two.

Emerging & Frontier Research

A copper-binding tripeptide that switches on collagen, elastin and antioxidant gene programmes, used topically for skin remodelling and subcutaneously for wound and tissue repair.

Healing, Repair & Regenerative

The best-evidenced cosmetic peptide there is: a copper-carrying tripeptide that pushes fibroblasts to rebuild collagen, elastin and glycosaminoglycans while dialling down matrix breakdown.

Cosmetic, Skin & Hair

The endogenous 28-amino-acid stomach hormone that every GHRP in this class is imitating, used almost exclusively as a research tool because its short half-life and octanoyl modification make it impractical as a drug.

Growth Hormone Secretagogues & GHRH Analogues

An early-generation GH-releasing heptapeptide from the same Bowers series as GHRP-6, almost entirely displaced by ipamorelin and GHRP-2 and rarely worth sourcing today.

Growth Hormone Secretagogues & GHRH Analogues

A strong GH-releasing hexapeptide that produces a bigger pulse than ipamorelin, at the cost of moderate appetite stimulation and some cortisol and prolactin drift.

Growth Hormone Secretagogues & GHRH Analogues

The original GH-releasing peptide, best known now for the ferocious hunger it produces alongside GH release, which makes it useful for hard gainers and unusable during a cut.

Growth Hormone Secretagogues & GHRH Analogues

Zealand Pharma's twice-weekly GLP-2 analogue for short bowel syndrome, delivered by autoinjector — it worked in phase 3 but got a Complete Response Letter and is now repeating the trial.

Gut & Gastrointestinal

The most widely sold named peptide blend, packing GHK-Cu, BPC-157 and TB-500 into a single vial at roughly a five-to-one-to-one ratio and marketed for skin quality, hair and general tissue repair.

Multi-Peptide Blends

The counter-regulatory pancreatic hormone used as rescue therapy for severe hypoglycaemia, and the parent scaffold for every glucagon-arm dual and triple agonist.

Incretin & Metabolic (GLP-1 / GIP / Glucagon / Amylin)

A grab-bag of peptides given not to treat anything but to provoke a gland and see whether it responds, which is how growth hormone deficiency, Cushing's and gastrinoma get diagnosed.

Clinical Endocrine & Hormone Analogues

The body's main intracellular antioxidant tripeptide, injected or infused for oxidative stress, liver support and — the reason most people actually buy it — skin brightening.

Longevity, Mitochondrial & Senolytic

Native gonadotropin-releasing hormone, used in short pulses to keep the testes signalling and working while on testosterone replacement.

Sexual Health, Melanocortin & Reproductive

A GnRH agonist delivered as a small biodegradable rod pushed under the skin of the abdomen, giving one or three months of hormone suppression per implant.

Sexual Health, Melanocortin & Reproductive

A channel-forming linear pentadecapeptide, the first antibiotic ever used clinically, now confined to topical and eye-drop combinations because it destroys red blood cells if it reaches the bloodstream.

Antimicrobial & Antiviral Peptides

A four-part complex for dark circles that chelates leaked iron, speeds bilirubin clearance and thickens the thin under-eye skin that lets the pigment show through.

Cosmetic, Skin & Hair

A placental hormone that acts as a long-acting LH substitute, used to keep the testes producing testosterone and sperm during or after testosterone replacement and steroid use.

Sexual Health, Melanocortin & Reproductive

A yeast-fermentation-derived hexapeptide marketed as an anti-senescence active for dermal firmness rather than as a wrinkle-specific ingredient.

Cosmetic, Skin & Hair

The most potent of the classical GH-releasing hexapeptides, with genuinely interesting cardioprotective activity through CD36, but also the fastest to desensitise its own receptor.

Growth Hormone Secretagogues & GHRH Analogues

The most potent of the classic GH-releasing hexapeptides, used in performance contexts as much for its CD36-mediated cardiac effects as for the growth hormone spike.

Body Composition, Anabolic & Performance

The unmodified lipolytic C-terminal fragment of human growth hormone and the parent of AOD-9604, sold heavily for fat loss on the strength of mouse studies and very little else.

Growth Hormone Secretagogues & GHRH Analogues

A GnRH agonist in a hydrogel implant that sits under the skin of the inner arm and suppresses sex hormones for a full year on one insertion.

Sexual Health, Melanocortin & Reproductive

The first mitochondrial-derived peptide ever found, a 24-residue cytoprotective signal that blocks apoptosis and protects neurons — and whose blood levels fall steeply with age.

Longevity, Mitochondrial & Senolytic

A self-injected decapeptide that shuts off a hereditary angioedema attack by blocking the bradykinin receptor driving the swelling.

Cardiometabolic, Vascular & Renal

A truncated IGF-1 that is roughly ten times more potent locally but clears in minutes, which is why it is injected directly into the muscle you just trained.

Body Composition, Anabolic & Performance

An engineered insulin-like growth factor 1 analogue that dodges its binding proteins, so it stays active far longer than natural IGF-1 and is used to push hypertrophy and tissue repair.

Body Composition, Anabolic & Performance

The canonical advanced hypertrophy protocol - recombinant GH or a secretagogue driving the axis from above while long-acting IGF-1 supplies the effector below - and also the fastest route to a hypoglycaemic emergency in this category.

Body Composition, Anabolic & Performance

The archetypal therapeutic peptide hormone family, spanning rapid-acting mealtime analogues through to once-weekly basal insulin icodec.

Incretin & Metabolic (GLP-1 / GIP / Glucagon / Amylin)

Eli Lilly's once-weekly basal insulin, a single-chain insulin fused to an antibody Fc fragment, giving an unusually flat profile across the whole week.

Clinical Endocrine & Hormone Analogues

A basal insulin re-engineered to cling to albumin for a full week, so one injection replaces seven and total annual injections drop from about 365 to 52.

Clinical Endocrine & Hormone Analogues

Short peptides designed to reproduce the useful part of interferon signalling without the systemic toxicity of the full cytokine - still firmly at the research stage.

Immune, Thymic & Anti-Inflammatory

A highly selective pentapeptide ghrelin-receptor agonist that produces a clean growth hormone pulse without meaningfully raising cortisol, prolactin or hunger, which is why it became the default GHRP in modern stacks.

Growth Hormone Secretagogues & GHRH Analogues

The single most commonly compounded and most widely sold peptide combination, pairing a GHRH analogue with a selective ghrelin-receptor agonist so the two arms of GH control fire together for a much larger pulse than either produces alone.

Growth Hormone Secretagogues & GHRH Analogues

A cyclic nine-amino-acid tumour-homing peptide that temporarily opens a transport channel through tumour tissue, letting co-administered chemotherapy actually reach the cancer cells instead of stalling at the stroma.

Oncology, Radiopharmaceutical & Diagnostic

The exercise-released myokine that browns white fat and is linked to bone density and cognitive protection — a decade-long scientific brawl over whether it exists that has largely resolved in its favour.

Emerging & Frontier Research

The hypothalamic switch that sits upstream of GnRH, used to kick the whole reproductive axis into gear and, in imaging studies, to increase sexual and emotional brain responses.

Sexual Health, Melanocortin & Reproductive

The full-length kisspeptin isoform, used in IVF research as an oocyte-maturation trigger that carries far less ovarian hyperstimulation risk than hCG.

Sexual Health, Melanocortin & Reproductive

The anti-aging protein itself — knock it out in a mouse and the animal ages catastrophically; over-express it and it lives longer, and a single low dose sharpened memory in aged monkeys.

Longevity, Mitochondrial & Senolytic

Short fragments of the anti-aging protein Klotho engineered to reproduce its cognitive and kidney-protective effects in a molecule small enough to actually manufacture and dose.

Emerging & Frontier Research

GLOW with KPV added, sold as an 80 mg four-peptide vial and aimed at people whose main problem is inflammation or gut symptoms rather than skin.

Multi-Peptide Blends

The three-amino-acid tail of alpha-MSH, used for gut, skin and mast-cell driven inflammation because it blocks NF-kB without the tanning or libido effects of the parent hormone.

Healing, Repair & Regenerative

The three-amino-acid business end of alpha-MSH, taken orally to shut down NF-kB-driven inflammation directly in the colon without the tanning or libido effects of the parent hormone.

Gut & Gastrointestinal

An iron-binding glycoprotein from milk and mucosal secretions that starves bacteria of iron, disrupts viral entry and tunes mucosal immunity - the most widely used oral immune peptide there is.

Immune, Thymic & Anti-Inflammatory

A long-acting somatostatin analogue given as a deep subcutaneous gel every four weeks for acromegaly and for slowing gastroenteropancreatic neuroendocrine tumours.

Clinical Endocrine & Hormone Analogues

An oral octapeptide that tightens intestinal tight junctions by blocking zonulin signalling — the most clinically advanced 'leaky gut' drug ever developed, and it failed its phase 3 in coeliac disease.

Gut & Gastrointestinal

Bacterially produced peptides physically threaded through their own macrolactam ring like a slipknot, giving protease and heat stability that no ordinary peptide has — currently the most interesting new antibiotic scaffold in years.

Emerging & Frontier Research

A recombinant hirudin drip that was the reference treatment for heparin-induced thrombocytopenia before it was withdrawn from the market.

Cardiometabolic, Vascular & Renal

A leu-enkephalin analogue applied topically to quiet acetylcholine release from the nerve side of the junction, sold as the presynaptic partner to Argireline.

Cosmetic, Skin & Hair

The most widely used GnRH agonist depot in the world, producing near-complete chemical castration after an initial hormone flare.

Sexual Health, Melanocortin & Reproductive

An orally active 14-amino-acid peptide capsule approved for IBS-C and chronic constipation that pulls fluid into the gut lumen and simultaneously turns down visceral pain signalling.

Gut & Gastrointestinal

First-generation daily GLP-1 agonist that produces around 8% weight loss - largely superseded by weekly drugs but now cheap and available generically.

Incretin & Metabolic (GLP-1 / GIP / Glucagon / Amylin)

Liver-directed tetrapeptide that is best known not for anything hepatic but for the striking cell-culture finding that it decondenses tightly packed chromatin in lymphocytes from elderly donors.

Khavinson Bioregulators (Cytogens & Cytomaxes)

Short-acting prandial GLP-1 agonist built to crush postprandial glucose spikes rather than to produce weight loss.

Incretin & Metabolic (GLP-1 / GIP / Glucagon / Amylin)

The only human cathelicidin, a cationic antimicrobial peptide that kills bacteria and biofilms directly while also driving angiogenesis and wound closure.

Healing, Repair & Regenerative

A weekly growth hormone prodrug in which unmodified somatropin is slowly released from an inert PEG carrier by a self-cleaving linker, so the drug that reaches the receptor is ordinary GH.

Growth Hormone Secretagogues & GHRH Analogues

A radioactive somatostatin analogue that binds neuroendocrine tumour cells and is dragged inside them, delivering beta radiation from within the tumour rather than through the skin.

Oncology, Radiopharmaceutical & Diagnostic

A radioactive PSMA-seeking ligand that homes to prostate cancer cells anywhere in the body and irradiates them from the inside — now standard of care in advanced castration-resistant prostate cancer.

Oncology, Radiopharmaceutical & Diagnostic

An orally active ghrelin-receptor agonist approved specifically as a single-dose diagnostic test for adult growth hormone deficiency, replacing the unpleasant and risky insulin tolerance test.

Growth Hormone Secretagogues & GHRH Analogues

Constrained cyclic peptides selected from trillion-member mRNA-display libraries and chemically tuned to survive the gut — the technology that produced enlicitide, the first oral PCSK9 inhibitor, approved in July 2026.

Emerging & Frontier Research

Monthly antibody-peptide conjugate that pairs GLP-1 agonism with GIP receptor antagonism, notable for how slowly weight comes back after dosing stops.

Incretin & Metabolic (GLP-1 / GIP / Glucagon / Amylin)

A fatty-acid-tagged collagen fragment that tricks fibroblasts into thinking the matrix has been damaged, so they lay down new collagen and fibronectin.

Cosmetic, Skin & Hair

Two matrikine lipopeptides sold as one ingredient: one rebuilds matrix, the other suppresses the inflammatory and glycation damage that tears it down.

Cosmetic, Skin & Hair

A lipopeptide marketed for deeper set wrinkles because it stimulates six matrix constituents at once, including the basement-membrane proteins the other Matrixyls ignore.

Cosmetic, Skin & Hair

Oxyntomodulin-based GLP-1 and glucagon dual agonist approved in China, notable for adding thermogenic energy expenditure to appetite suppression.

Incretin & Metabolic (GLP-1 / GIP / Glucagon / Amylin)

The only FDA-approved recombinant IGF-1, licensed for severe primary IGF-1 deficiency in children and the reference point against which every grey-market IGF analogue should be judged.

Body Composition, Anabolic & Performance

A hypothalamic neuropeptide that switches on during REM sleep and simultaneously drives eating — which is exactly why the drug industry has spent twenty years trying to block it rather than give it.

Sleep, Circadian & Mood

A competitive alpha-MSH blocker that shuts down the signal telling melanocytes to make pigment, rather than poisoning the tyrosinase enzyme downstream.

Cosmetic, Skin & Hair

A linear alpha-MSH analogue that tans the skin through MC1R without the nausea, flushing and erections of Melanotan II, and is genuinely approved as an implant for a rare light-sensitivity disease.

Sexual Health, Melanocortin & Reproductive

A non-selective melanocortin agonist that produces a deep, genuine tan with very little sun exposure, and drags strong libido and appetite suppression along with it whether you wanted them or not.

Sexual Health, Melanocortin & Reproductive

The mirror image of Melanostatine: an alpha-MSH mimic that switches MC1R on to deepen pigment and improve the skin's own UV defence, without an injection.

Cosmetic, Skin & Hair

The pore-forming peptide that makes up about half of dry bee venom, genuinely lytic against bacteria, viruses and tumour cells — and equally lytic against human red blood cells, which is why it has never become a drug.

Antimicrobial & Antiviral Peptides

A lipophilic peptide-drug conjugate that sneaks an alkylating payload into myeloma cells and lets their own aminopeptidases uncap it — approved in the EU, withdrawn in the US after the confirmatory trial showed a survival detriment.

Oncology, Radiopharmaceutical & Diagnostic

The 24-amino-acid tail of an exercise-induced IGF-1 splice variant, injected locally on the theory that it wakes up satellite cells for repair and growth.

Body Composition, Anabolic & Performance

An echinocandin antifungal with the cleanest drug-interaction profile of the class, used for candidaemia, oesophageal candidiasis and antifungal prophylaxis in stem-cell transplant.

Antimicrobial & Antiviral Peptides

An orally bioavailable non-peptide ghrelin mimetic that raises GH and IGF-1 around the clock from a single daily capsule, with appetite, water retention and worsened insulin sensitivity as the standing trade-offs.

Growth Hormone Secretagogues & GHRH Analogues

The hormone that fires the stomach's housekeeping contractions between meals, and the drug class built to mimic it for gastroparesis — where erythromycin remains the only agent that actually reached the clinic.

Gut & Gastrointestinal

A cyclic 14-residue CXCR4 blocker that releases stem cells from the bone marrow into the blood, letting most myeloma patients collect a full transplant graft in a single apheresis session.

Oncology, Radiopharmaceutical & Diagnostic

A 16-amino-acid peptide written in mitochondrial DNA that acts like a chemical signal for exercise, switching on AMPK and improving insulin sensitivity and metabolic flexibility.

Longevity, Mitochondrial & Senolytic

Engineered MOTS-c variants built to survive longer in the bloodstream than the one-to-two-hour parent peptide, so that a realistic dosing schedule becomes possible.

Longevity, Mitochondrial & Senolytic

The body's own brake on muscle growth - not something anyone takes, but the target that half this category is built to switch off.

Body Composition, Anabolic & Performance

Terminally capped Selank that lasts longer per dose, used for all-day anxiolysis without sedation or dependence.

Cognitive & Nootropic

A terminally capped version of Semax that resists breakdown for longer, so it hits harder per milligram and lasts through a working day instead of a morning.

Cognitive & Nootropic

Not a peptide at all, but the cofactor every longevity clinic drips or injects — the redox and sirtuin currency of the cell, which falls substantially with age.

Longevity, Mitochondrial & Senolytic

A GnRH agonist given as a nasal spray, which makes it the needle-free option for endometriosis and early puberty suppression.

Sexual Health, Melanocortin & Reproductive

A BASF cosmetic ingredient launched in 2026 that adapts collagen-hybridizing-peptide chemistry so the peptide binds only where collagen is already damaged, concentrating repair signalling at the sites that need it.

Emerging & Frontier Research

A hypothalamic satiety peptide that suppresses food intake completely independently of leptin, which is why it keeps getting revisited as a route into leptin-resistant obesity.

Emerging & Frontier Research

Recombinant human BNP given as an IV drip to drop filling pressures and relieve breathlessness in acute decompensated heart failure - effective on haemodynamics but not on outcomes.

Cardiometabolic, Vascular & Renal

A gut and brain neuropeptide that suppresses appetite and simultaneously raises energy expenditure, now being engineered into long-acting analogues as a combination partner for incretins.

Emerging & Frontier Research

A 20-residue neuropeptide with the unusual property of increasing wakefulness and arousal while simultaneously reducing anxiety - a combination almost nothing else in pharmacology achieves.

Cognitive & Nootropic

A twenty-amino-acid neuropeptide that does something almost nothing else does in rodents — increases wakefulness and arousal while simultaneously reducing anxiety instead of raising it.

Sleep, Circadian & Mood

A bacteriocin from cheese-making lactococci that has been eaten safely as a food preservative since the 1950s and is being re-examined as an oral gram-positive antimicrobial and microbiome tool.

Antimicrobial & Antiviral Peptides

An orally active dipeptide nootropic registered in Russia that raises NGF and BDNF in the hippocampus and is used for memory, attention and post-injury cognitive recovery.

Cognitive & Nootropic

The original somatostatin analogue, used since 1988 to shut down excess growth hormone in acromegaly and to control the flushing and diarrhoea of carcinoid syndrome and VIPoma.

Clinical Endocrine & Hormone Analogues

A cationic 12-mer derived from a bovine neutrophil peptide, trialled as a topical gel for catheter-site infection, rosacea, acne and HPV-related lesions without ever clearing a phase 3 endpoint.

Antimicrobial & Antiviral Peptides

The hypothalamic wakefulness neuropeptide whose loss causes narcolepsy, given intranasally in research settings to restore alertness and working memory after sleep deprivation.

Cognitive & Nootropic

The hypothalamic peptide that holds you awake, delivered intranasally as an alertness rescue after sleep loss and studied as a replacement therapy in narcolepsy type 1.

Sleep, Circadian & Mood

The first non-peptide oral GLP-1 agonist approved for obesity - a real tablet with no food or water restrictions, giving about 12% weight loss at the top dose.

Incretin & Metabolic (GLP-1 / GIP / Glucagon / Amylin)

A single-dose lipoglycopeptide with three separate mechanisms against gram-positive bacteria, useful for one-and-done skin infection treatment but notorious for scrambling coagulation lab tests for days afterwards.

Antimicrobial & Antiviral Peptides

The bone-secreted hormone that turns out to talk to muscle, pancreas, testis and brain — proposed as the signal that lets the skeleton coordinate exercise capacity, glucose handling and fertility.

Emerging & Frontier Research

A histone-derived bone peptide that stimulates osteoblast proliferation and marrow activity, used experimentally for fracture healing and bone density.

Healing, Repair & Regenerative

The endogenous proglucagon-derived dual GLP-1 and glucagon agonist that inspired the entire dual-agonist drug class.

Incretin & Metabolic (GLP-1 / GIP / Glucagon / Amylin)

A nine-amino-acid posterior pituitary hormone taken intranasally for social ease, trust and emotional connection, with an obstetric role that has nothing to do with why people in this space use it.

Cognitive & Nootropic

The uterine contraction hormone, infused to induce or strengthen labour and pushed after delivery to clamp the uterus shut and stop postpartum bleeding.

Clinical Endocrine & Hormone Analogues

An adamantylated four-residue fragment of ciliary neurotrophic factor that boosts hippocampal neurogenesis and BDNF and reduces tau pathology in Alzheimer's models.

Cognitive & Nootropic

GHK with a fatty tail bolted on so it actually penetrates the stratum corneum — copper-peptide-style collagen signalling without the copper or the blue stain.

Cosmetic, Skin & Hair

A once-daily PTH prodrug that drips out parathyroid hormone continuously, replacing the missing hormone in chronic hypoparathyroidism instead of just propping up calcium with pills.

Clinical Endocrine & Hormone Analogues

Pancreas-directed tetrapeptide used in short courses for glycaemic support, with the most specific preclinical story of the Cytogen series - it is reported to raise insulin and glucose-transporter gene expression in pancreatic cells.

Khavinson Bioregulators (Cytogens & Cytomaxes)

A broad-spectrum somatostatin analogue with unusually strong SSTR5 binding, approved for Cushing's disease and for acromegaly that octreotide and lanreotide failed to control.

Clinical Endocrine & Hormone Analogues

A shortened spadin analogue that blocks the TREK-1 potassium channel and produces antidepressant effects in rodents within days rather than the weeks an SSRI takes.

Cognitive & Nootropic

MGF with a polyethylene glycol chain bolted on so it survives in circulation for days instead of minutes, traded for the loss of any local-only action.

Body Composition, Anabolic & Performance

A pegylated cyclic peptide that blocks complement C3, controlling paroxysmal nocturnal haemoglobinuria systemically and slowing geographic atrophy when injected into the eye.

Cardiometabolic, Vascular & Renal

A mutated growth hormone molecule that jams the GH receptor instead of activating it, normalising IGF-1 in acromegaly that somatostatin analogues could not control.

Clinical Endocrine & Hormone Analogues

Altimmune's balanced 1:1 GLP-1 and glucagon dual agonist, positioned specifically for lean-mass-sparing weight loss and MASH rather than maximum scale-weight reduction.

Incretin & Metabolic (GLP-1 / GIP / Glucagon / Amylin)

A marketing name for arginate-salt BPC-157 that spread rapidly after US compounding restrictions, chemically near-identical to what it replaced.

Healing, Repair & Regenerative

A heparin-like sulfated sugar polymer, approved orally for interstitial cystitis and used by injection in veterinary and Australian practice as a disease-modifying osteoarthritis drug.

Healing, Repair & Regenerative

Ileal satiety hormone acting on Y2 receptors, explored intranasally and as an adjunct to GLP-1 therapy but repeatedly defeated by nausea.

Incretin & Metabolic (GLP-1 / GIP / Glucagon / Amylin)

Once-weekly amylin analogue from Zealand and Roche aiming for double-digit weight loss with essentially placebo-level nausea, now heading into phase 3.

Incretin & Metabolic (GLP-1 / GIP / Glucagon / Amylin)

A frog-skin-derived antimicrobial peptide developed as a topical cream for infected diabetic foot ulcers, rejected twice by the FDA because it never beat existing treatment.

Antimicrobial & Antiviral Peptides

A synthetic dipeptide-like immunostimulant taken orally, used in Italy, China and Latin America to cut the frequency of recurrent respiratory infections in children.

Immune, Thymic & Anti-Inflammatory

A fluorine-18 PSMA PET tracer that answers the same question as the gallium tracers but with a two-hour isotope, so doses can be shipped and centres without a generator can run PSMA imaging.

Oncology, Radiopharmaceutical & Diagnostic

Neuron-directed tripeptide used in short courses for cognitive support and antioxidant neuroprotection, with the best rodent data of the Cytogen series for protecting brain cells against hypoxic and oxidative stress.

Khavinson Bioregulators (Cytogens & Cytomaxes)

A three-amino-acid Khavinson bioregulator run alongside Epitalon in Russian protocols, aimed at neuronal protection and at keeping sleep and cognitive rhythm intact with age.

Sleep, Circadian & Mood

An approved once-daily oral peptide for chronic constipation and IBS-C that copies the body's own uroguanylin, switching on only in the acidic upper small intestine and causing somewhat less diarrhoea than linaclotide.

Gut & Gastrointestinal

The original CXCR4 blocker — a small-molecule bicyclam, not a peptide — that has been pulling stem cells out of bone marrow for transplant collection since 2008.

Oncology, Radiopharmaceutical & Diagnostic

A 1940s cyclic lipopeptide shelved for decades because of kidney toxicity and dragged back into use as a last-resort agent against carbapenem-resistant gram-negative bacteria.

Antimicrobial & Antiviral Peptides

FDA-approved synthetic amylin analogue taken with mealtime insulin to flatten postprandial glucose and reduce food intake - the only approved amylin drug there is.

Incretin & Metabolic (GLP-1 / GIP / Glucagon / Amylin)

A tripeptide aimed at sagging rather than wrinkles, marketed for reducing progerin and inhibiting the elastase that dissolves the skin's elastic scaffold.

Cosmetic, Skin & Hair

Prostate-directed tetrapeptide taken in short courses by older men for urinary flow and prostate comfort, and the bioregulator most often used as an adjunct in chronic prostatitis protocols.

Khavinson Bioregulators (Cytogens & Cytomaxes)

An FDA-approved melanocortin agonist that raises sexual desire and arousal from the brain rather than by opening blood vessels, so it works on wanting sex rather than on plumbing.

Sexual Health, Melanocortin & Reproductive

A pre-mixed intranasal libido blend pairing bremelanotide with oxytocin, notable mainly because the intranasal route for bremelanotide was abandoned clinically over blood-pressure increases.

Multi-Peptide Blends

A cell-penetrating peptide that pries the Wnt brake CXXC5 off Dishevelled, restarting follicle neogenesis in mouse skin — currently the most interesting preclinical hair compound in the peptide world.

Cosmetic, Skin & Hair

Full-length recombinant parathyroid hormone, the first true replacement therapy for chronic hypoparathyroidism, withdrawn worldwide at the end of 2024 but still the reference agent for the indication.

Clinical Endocrine & Hormone Analogues

Triple agonist at the GIP, GLP-1 and glucagon receptors that added glucagon-driven energy expenditure to appetite suppression and produced up to 30% weight loss in phase 3.

Incretin & Metabolic (GLP-1 / GIP / Glucagon / Amylin)

A once-weekly echinocandin engineered for chemical stability, approved for candidaemia and invasive candidiasis in patients with limited alternatives.

Antimicrobial & Antiviral Peptides

A research class of orally delivered antimicrobial peptides intended to reshape the gut microbiome the way rifaximin does — killing selectively in the lumen with essentially no systemic absorption.

Gut & Gastrointestinal

A bacterial bicyclic depsipeptide that acts as a prodrug for a zinc-binding HDAC inhibitor, used for cutaneous T-cell lymphoma when skin-directed therapy has failed.

Oncology, Radiopharmaceutical & Diagnostic

A weekly injected hepcidin mimetic that locks iron away from red cell production, keeping haematocrit under control in polycythaemia vera without repeated phlebotomy.

Cardiometabolic, Vascular & Renal

The first hormone ever discovered, now used as an FDA-approved intravenous diagnostic that makes the pancreas dump bicarbonate on command so radiologists and endoscopists can see how it is working.

Gut & Gastrointestinal

Tuftsin-derived anxiolytic peptide registered in Russia for generalised anxiety that takes the edge off without sedation, cognitive fog, or the dependence and withdrawal that come with benzodiazepines.

Cognitive & Nootropic

A nasal anxiolytic peptide registered as a medicine in Russia that takes the edge off anxious arousal without sedating you, which is why it often improves sleep as a side effect rather than as a direct hypnotic action.

Sleep, Circadian & Mood

Single molecules engineered to hit four or more metabolic receptors at once — GLP-1, GIP, glucagon and amylin — chasing greater weight loss with better lean-mass retention and less nausea than any one pathway allows.

Emerging & Frontier Research

Long-acting GLP-1 receptor agonist that slows gastric emptying and blunts appetite, producing roughly 15% body-weight loss at 2.4 mg weekly.

Incretin & Metabolic (GLP-1 / GIP / Glucagon / Amylin)

Russian-registered ACTH(4-10) analogue taken intranasally for focus, mental stamina and post-stroke recovery, which raises BDNF and NGF without any of the cortisol-releasing activity of the parent hormone.

Cognitive & Nootropic

A pre-mixed intranasal pairing of the two best-known Russian neuropeptides, one stimulating and one anxiolytic, usually sold at a one-to-one ratio in a ready-to-use spray bottle.

Multi-Peptide Blends

Recombinant human relaxin, the pregnancy hormone that widens blood vessels and boosts renal blood flow, trialled as a 48-hour infusion in acute heart failure and ultimately unsuccessful.

Cardiometabolic, Vascular & Renal

The native 29-amino-acid active fragment of human GHRH, and the most clinically established and most commonly physician-prescribed growth hormone secretagogue in the United States.

Growth Hormone Secretagogues & GHRH Analogues

Melanocortin-4 receptor agonist approved for rare genetic and acquired hypothalamic obesity - it works spectacularly in the right genotype and does very little in ordinary obesity.

Incretin & Metabolic (GLP-1 / GIP / Glucagon / Amylin)

An MC4R agonist that restores the broken satiety signal in people whose obesity comes from hypothalamic damage or a specific genetic defect, rather than from ordinary energy balance.

Clinical Endocrine & Hormone Analogues

A 26-residue mitochondrial-derived peptide that protects cells from apoptosis, improves insulin sensitivity and shows a striking inverse association with prostate cancer risk in human cohorts.

Longevity, Mitochondrial & Senolytic

The shortest of the humanin-like family at 20 residues and the odd one out — it promotes apoptosis rather than blocking it, which makes it a tumour-suppression candidate instead of a cytoprotectant.

Longevity, Mitochondrial & Senolytic

Cartilage and bone peptide extract in capsule form, taken in monthly courses by people with osteoarthritis, joint stiffness or ageing bone density concerns.

Khavinson Bioregulators (Cytogens & Cytomaxes)

An FDA-approved intravenous cholecystokinin fragment that forces the gallbladder to contract on demand, used to measure gallbladder ejection fraction and to test pancreatic enzyme output.

Gut & Gastrointestinal

A pan-estrogen-related-receptor agonist that reproduces several endurance-training adaptations in mouse muscle without the training - the current front-runner for 'exercise in a bottle'.

Body Composition, Anabolic & Performance

A longer Argireline with two extra residues that bind the SNARE complex more tightly, usually formulated alongside its shorter parent.

Cosmetic, Skin & Hair

A once-weekly growth hormone analogue that binds reversibly to albumin to stretch a daily injection into a weekly one, approved for both adult and paediatric growth hormone deficiency.

Growth Hormone Secretagogues & GHRH Analogues

The endogenous inhibitory hormone that every somatostatin analogue is copying, used itself only as a short intravenous infusion for acute variceal or pancreatic bleeding because it is destroyed within minutes.

Clinical Endocrine & Hormone Analogues

A once-weekly growth hormone fusion protein carrying three copies of the hCG C-terminal peptide, which extend its half-life enough to replace daily injections in children with GH deficiency.

Growth Hormone Secretagogues & GHRH Analogues

Recombinant 191-amino-acid human growth hormone itself - the reference standard every secretagogue in this class is measured against, and the only one with decades of registration-grade efficacy and safety data.

Growth Hormone Secretagogues & GHRH Analogues

A 14-amino-acid galanin-family peptide that is dramatically suppressed in obesity and, when given back to animals, reduces food intake and improves lipid handling.

Emerging & Frontier Research

A cardiolipin-binding tetrapeptide that concentrates in the inner mitochondrial membrane and restores cristae structure and ATP output — and, as of September 2025, the first FDA-approved drug of its kind.

Longevity, Mitochondrial & Senolytic

A sensory neuropeptide central to wound healing and corneal repair that is far more often a drug target to be blocked than a compound anyone should be injecting.

Healing, Repair & Regenerative

Blockade of the substance P receptor — a beautiful pain hypothesis that failed completely in pain trials, then found a real and durable use stopping chemotherapy-induced vomiting.

Pain, Analgesia & Neuromodulation

Pancreas peptide extract in capsule form, taken in monthly courses for glycaemic and digestive-enzyme support, usually by people with prediabetes or insulin resistance.

Khavinson Bioregulators (Cytogens & Cytomaxes)

Boehringer and Zealand's weekly glucagon and GLP-1 dual agonist, giving about 16.6% weight loss in phase 3 alongside some of the strongest liver-fibrosis data in the class.

Incretin & Metabolic (GLP-1 / GIP / Glucagon / Amylin)

Liver peptide extract in capsule form, taken in monthly courses for hepatic support - typically by people with fatty liver, mildly raised enzymes or a history of heavy alcohol or medication load.

Khavinson Bioregulators (Cytogens & Cytomaxes)

A synthetic mimic of temple viper venom that blocks the muscle-type nicotinic acetylcholine receptor, working on the receiving side of the junction instead of the nerve side.

Cosmetic, Skin & Hair

A thrombospondin-1 mimic that converts latent TGF-beta into its active form, driving collagen synthesis through the body's own wound-repair switch.

Cosmetic, Skin & Hair

An early orally active growth hormone secretagogue from Novo Nordisk that worked but was abandoned when it turned out to inhibit CYP3A4 and raise liver enzymes - historically important, practically obsolete.

Growth Hormone Secretagogues & GHRH Analogues

The standard partner to BPC-157 for soft-tissue injury, working through actin regulation to speed cell migration, new blood vessel growth and lower fibrosis.

Healing, Repair & Regenerative

An FDA-approved daily injection that makes the remaining small bowel physically grow taller villi and absorb more, letting short bowel syndrome patients cut back on IV nutrition.

Gut & Gastrointestinal

A soil-bacterium depsipeptide discovered in 2015 that binds two different cell wall precursors at once and has so far failed to select for resistance in the laboratory — still entirely preclinical.

Antimicrobial & Antiviral Peptides

A once-daily vancomycin derivative with added membrane activity, approved for complicated skin infection and hospital-acquired pneumonia but carrying boxed warnings for kidney damage and fetal harm that have kept it a third-line drug.

Antimicrobial & Antiviral Peptides

The active fragment of parathyroid hormone which, given as one short daily spike, actually builds new bone instead of just slowing its loss.

Clinical Endocrine & Hormone Analogues

A slow-release vasopressin prodrug that constricts the splanchnic circulation, used to improve kidney function in hepatorenal syndrome and to stop variceal bleeding in cirrhosis.

Clinical Endocrine & Hormone Analogues

The only FDA-approved GHRH analogue, a stabilised full-length GHRH(1-44) that specifically strips visceral abdominal fat without the appetite or glucose penalties of most fat-loss drugs.

Growth Hormone Secretagogues & GHRH Analogues

The only FDA-approved GHRH analogue for a body-composition indication, given daily to strip visceral abdominal fat in people with HIV-associated lipodystrophy.

Clinical Endocrine & Hormone Analogues

The only compound with prospective randomised evidence that it selectively strips visceral abdominal fat, and the closest thing this category has to a proven drug.

Body Composition, Anabolic & Performance

A three-way growth-hormone secretagogue vial, almost always 6 mg tesamorelin with 3 mg CJC-1295 no-DAC and 3 mg ipamorelin, sold as an upgrade to the classic two-peptide GH stack.

Multi-Peptide Blends

Triple noradrenaline, dopamine and serotonin reuptake inhibitor used off-label for appetite suppression - not a peptide, but ubiquitous in peptide-adjacent weight protocols.

Incretin & Metabolic (GLP-1 / GIP / Glucagon / Amylin)

Tetrapeptide directed at the testicular and reproductive axis, taken in short courses by men hoping to support endogenous testosterone and spermatogenesis - with essentially no evidence that it does either.

Khavinson Bioregulators (Cytogens & Cytomaxes)

A calf-thymus peptide extract given in short twice-yearly courses to restore T-cell function in ageing immune systems — and the Khavinson compound with the strongest human survival data behind it.

Longevity, Mitochondrial & Senolytic

Calf-thymus peptide extract used in ten-day courses to restore T-cell function in ageing or post-illness immune systems, and the compound with the strongest human survival signal in the entire bioregulator series.

Khavinson Bioregulators (Cytogens & Cytomaxes)

A synthetic Glu-Trp dipeptide registered as an immunostimulant in Russia, representing the minimal active core of thymic immune signalling.

Immune, Thymic & Anti-Inflammatory

The five-amino-acid active fragment of thymopoietin, used clinically in parts of Europe and Asia to restore T-cell function in immunodeficiency, hepatitis B and rheumatoid arthritis.

Immune, Thymic & Anti-Inflammatory

A 28-amino-acid thymic peptide, approved in dozens of countries outside the US, that pushes immature T-cells toward mature Th1 function and is used for chronic hepatitis, immunosenescence and immune-suppressed states.

Immune, Thymic & Anti-Inflammatory

The full-length parent peptide behind TB-500, with real randomised human trial data in dry eye and corneal wound healing rather than just rodent injury models.

Healing, Repair & Regenerative

The actin-sequestering repair peptide applied to skin and scalp rather than injected, on the strength of mouse data showing it activates hair follicle stem cells.

Cosmetic, Skin & Hair

A zinc-dependent thymic nonapeptide that regulates T-cell differentiation and, at low doses, has surprisingly strong anti-inflammatory and analgesic effects in animal models.

Immune, Thymic & Anti-Inflammatory

Recombinant TSH that wakes up thyroid tissue for thyroglobulin testing and radioiodine treatment, so thyroid cancer patients no longer have to become hypothyroid to be scanned.

Clinical Endocrine & Hormone Analogues

Dual GIP and GLP-1 receptor agonist delivering around 21% mean weight loss at 15 mg weekly - currently the most effective approved obesity drug on the market.

Incretin & Metabolic (GLP-1 / GIP / Glucagon / Amylin)

Non-pharmacy incretin supply sold as 'research chemicals' — the same molecule on paper as Mounjaro, with none of the identity, purity, sterility or concentration guarantees, and the single biggest source of real-world harm in the 2026 peptide space.

Emerging & Frontier Research

Regeneron's anti-myostatin antibody, being combined with semaglutide to make weight loss come from fat rather than muscle.

Body Composition, Anabolic & Performance

GHK without the copper — used when copper's blue colour or its reaction with vitamin C and other reducing actives would wreck the formula.

Cosmetic, Skin & Hair

A potent GnRH agonist used as a depot to shut down sex hormones in prostate cancer and endometriosis, and used off-label as a single low-dose shot to try to restart a suppressed testosterone axis.

Sexual Health, Melanocortin & Reproductive

An IgG-derived tetrapeptide that switches macrophages and microglia toward active phagocytosis, and the structural parent of the anxiolytic peptide Selank.

Immune, Thymic & Anti-Inflammatory

The body's own intestinal peptides that control fluid secretion and, unexpectedly, gut-to-brain satiety signalling — the natural templates that plecanatide and linaclotide were built from.

Gut & Gastrointestinal

The global workhorse glycopeptide antibiotic for MRSA and severe gram-positive infection, given intravenously for systemic disease and orally — where it is not absorbed at all — for C. difficile colitis.

Antimicrobial & Antiviral Peptides

The native antidiuretic hormone, used in intensive care as a catecholamine-sparing vasopressor that raises blood pressure in septic and vasodilatory shock.

Clinical Endocrine & Hormone Analogues

Blood vessel peptide extract in capsule form, taken in monthly courses for vascular and circulatory support - the extract counterpart to the synthetic tripeptide Vesugen.

Khavinson Bioregulators (Cytogens & Cytomaxes)

Vascular-endothelium tripeptide taken in short courses to support endothelial function and vessel-wall health, and the bioregulator most often paired with cardiac and metabolic stacks.

Khavinson Bioregulators (Cytogens & Cytomaxes)

A curare-style competitive blocker at the muscle nicotinic receptor, sold for fast surface smoothing rather than long-term collagen change.

Cosmetic, Skin & Hair

The synthetic dipeptide distilled out of Thymalin - two amino acids, Lys-Glu, used in short courses to nudge T-cell function and immunosenescence in the same direction as the thymus extract without the animal-tissue baggage.

Khavinson Bioregulators (Cytogens & Cytomaxes)

A 28-amino-acid neuropeptide used as a nasal spray in chronic inflammatory response syndrome protocols and intravenously in critical-care trials, valued for broad neuroimmune and pulmonary anti-inflammatory effects.

Healing, Repair & Regenerative

Retinal peptide extract in capsule form, taken in monthly courses for visual function - typically by people worried about age-related macular changes, diabetic retinal risk or general eye strain.

Khavinson Bioregulators (Cytogens & Cytomaxes)

Viking Therapeutics' GLP-1 and GIP dual agonist, with both a weekly injection and a daily tablet in late-stage trials and unusually fast early weight loss.

Incretin & Metabolic (GLP-1 / GIP / Glucagon / Amylin)

The oral capsule counterpart to injectable Thymalin - 10 mg of calf thymus peptide complex per capsule, taken in monthly courses for immune support in ageing or after repeated infections.

Khavinson Bioregulators (Cytogens & Cytomaxes)

A next-generation cyclosporine analogue approved for lupus nephritis, with more potent calcineurin inhibition and predictable enough pharmacokinetics to be dosed without blood-level monitoring.

Immune, Thymic & Anti-Inflammatory

A C-type natriuretic peptide analogue injected daily in children with achondroplasia to release the brake that the FGFR3 mutation puts on the growth plate.

Clinical Endocrine & Hormone Analogues

The classic soft-tissue repair pair, BPC-157 and TB-500 lyophilised together at one-to-one, and the blend whose fixed ratio conflicts most obviously with how its two components are normally dosed.

Multi-Peptide Blends

A cone-snail venom peptide delivered straight into spinal fluid by an implanted pump for severe pain that opioids can no longer touch — it does not cause tolerance, dependence or respiratory depression, but it can cause psychosis.

Pain, Analgesia & Neuromodulation

A once-daily self-injected macrocyclic peptide that blocks complement C5, giving myasthenia gravis patients an alternative to monthly infusion antibodies.

Cardiometabolic, Vascular & Renal

A zinc-activated thymic nonapeptide applied to the scalp, and one of the very few experimental hair peptides that has actually been tested on human heads.

Cosmetic, Skin & Hair

A doxorubicin molecule bolted onto an LHRH peptide so that only LHRH-receptor-positive tumours take it up — a beautiful targeting idea that failed outright in phase 3.

Oncology, Radiopharmaceutical & Diagnostic