Peptides

26 compounds. Each page reports the published research, rates the strongest evidence on a four-step scale, and says plainly what has not been shown.

Click Peptide or Evidence to sort
Studied for Route Status
AOD-9604 Fat Loss Peptide fat loss in obese mice (strong), weight loss in obese adults (failed Phase IIb), cartilage repair (lab and animal), safety and tolerability in humans Small human No coded reports yet subcutaneous injection (oral in the trials) Not FDA approved as a drug; GRAS as a food ingredient (2010); sold as a research chemical; prohibited by WADA
BPC-157 Healing Peptide Tendon and muscle healing, Gut protection, Nerve and bone repair Animal Mixed 28 reports subcutaneous injection; oral in gut studies Research chemical; not approved for human use
CJC-1295 Growth Hormone Secretagogue raising growth hormone and IGF-1, body composition (lean mass, belly fat), growth in GHRH-deficient mice, age-related GH decline (proposed, not trialed) Small human No coded reports yet subcutaneous injection Not FDA approved; clinical development halted in 2006; sold as a research chemical; prohibited by WADA
DSIP (Delta Sleep-Inducing Peptide) Sleep Peptide chronic insomnia, sleep disturbance in alcohol and benzodiazepine withdrawal, stress hormone (cortisol) regulation, pain (modest, older studies) Small human No coded reports yet subcutaneous injection (intravenous in the original studies) Not FDA approved; sold as a research chemical; not on the WADA list
Epithalon (Epitalon) Anti-Aging Peptide telomere length in cells, lifespan in mice and flies, melatonin in aged animals and people, retinitis pigmentosa (small human study) Small human No coded reports yet subcutaneous or intramuscular injection Not FDA approved; sold as a research chemical; not on the WADA list; used in Russia as a peptide bioregulator
FOXO4-DRI Senolytic Peptide clearing senescent cells (cells and mice), reversing signs of aging in old mice, kidney function and fur in aged mice Animal No coded reports yet subcutaneous or intraperitoneal injection (mice) Not approved anywhere; sold as a research chemical; not on the WADA list
GHK-Cu (Copper Peptide) Anti-Aging Peptide skin aging (topical), wound healing (animals), hair growth (lab), gene expression changes Small human No coded reports yet topical cream or serum (subcutaneous injection in community use) Sold as a cosmetic ingredient; not FDA approved as a drug; injectable form is a research chemical
GHRP-2 Growth Hormone Secretagogue growth hormone release (single-dose human studies), diagnosing growth hormone deficiency (approved test in Japan), synergy with GHRH-type peptides, appetite (human) Small human No coded reports yet subcutaneous injection (intravenous for the diagnostic test) Approved in Japan as a diagnostic agent only; not FDA approved; sold as a research chemical; prohibited by WADA
GHRP-6 Growth Hormone Secretagogue growth hormone release (human, single dose), appetite (human), heart protection after injury (animals), wound healing (animals) Small human No coded reports yet subcutaneous injection Not approved anywhere; sold as a research chemical; prohibited by WADA
Hexarelin Growth Hormone Secretagogue growth hormone release (human, single dose), heart contractility (human, small), desensitization with repeated use (human), cortisol and prolactin response (human) Small human No coded reports yet subcutaneous injection Not approved anywhere; sold as a research chemical; prohibited by WADA
Ipamorelin Growth Hormone Secretagogue growth hormone release (human, single dose), gut motility after surgery (human Phase II, discontinued), lean mass in growth-hormone-deficient pigs, bone density in rats Small human No coded reports yet subcutaneous injection, 1 to 3 times daily Not approved anywhere; clinical development discontinued; sold as a research chemical and by compounding pharmacies; prohibited by WADA
Kisspeptin-10 Hormonal Peptide IVF egg maturation, LH and testosterone stimulation, hypothalamic amenorrhea, locating hormone-axis problems Small human No coded reports yet intravenous infusion or subcutaneous injection Research chemical; not approved in any country; in clinical trials for IVF
KPV Anti-Inflammatory Peptide colitis and gut inflammation (mice), skin inflammation (animals), antimicrobial activity (lab), blocking the NF-κB inflammation switch (cells) Animal No coded reports yet subcutaneous injection; oral capsules (used in the mouse work); topical Not approved anywhere; sold as a research chemical and by some compounding pharmacies; not on the WADA list
LL-37 Antimicrobial Peptide killing bacteria and fungi (lab), breaking up biofilms (lab), skin wound healing (animals, human tissue), immune signaling (lab and animal) Animal No coded reports yet subcutaneous injection in community use; topical in research Not approved anywhere; sold as a research chemical; not on the WADA list
Melanotan II (MT-2) Melanocortin Peptide Sunless tanning, Sexual arousal, Appetite suppression Small human No coded reports yet subcutaneous injection Research chemical; not approved anywhere
MK-677 (Ibutamoren) Growth Hormone Secretagogue growth hormone and IGF-1 in older adults (2-year trial), body composition (modest), deep sleep, bone density (preliminary), recovery after hip fracture Small human No coded reports yet oral, once daily Not approved anywhere; sold as a research chemical, often shelved with SARMs; prohibited by WADA
MOTS-c Mitochondrial Peptide obesity and insulin resistance (mice), physical performance in old mice, response to exercise (human blood levels), metabolic disease (one small human trial of an analog) Animal No coded reports yet subcutaneous injection Not approved anywhere; sold as a research chemical; prohibited by WADA as a metabolic modulator
PT-141 (Bremelanotide) Melanocortin Peptide low sexual desire in premenopausal women (approved), erectile dysfunction in men (earlier studies), female arousal disorder (earlier studies) Clinical trials No coded reports yet subcutaneous injection, on demand (nasal spray in early studies) FDA approved (Vyleesi) for premenopausal women with HSDD; prescription only; off-label in men; sold as a research chemical; not on the WADA list
Selank Nootropic Peptide generalized anxiety disorder (small Russian trials), anxiety with cognitive complaints, BDNF and memory in rats, immune modulation (lab) Small human No coded reports yet nasal spray (subcutaneous injection in community use) Approved in Russia as a prescription nasal spray; not FDA approved; sold as a research chemical elsewhere; not on the WADA list
Semaglutide GLP-1 Agonist chronic weight management, type 2 diabetes, heart attack and stroke prevention, kidney disease, sleep apnea, fatty liver (ongoing or recent trials) Clinical trials No coded reports yet subcutaneous injection weekly (Ozempic, Wegovy); daily oral tablet (Rybelsus) FDA approved; prescription only; compounded versions restricted by the FDA; not on the WADA list
Semax Nootropic Peptide attention and memory, stroke recovery, optic nerve disease, learning in rodents Small human No coded reports yet nasal spray (subcutaneous injection in community use) Approved in Russia as a prescription nasal spray; not FDA approved; sold as a research chemical elsewhere
Sermorelin Growth Hormone Secretagogue growth hormone deficiency in children (approved use, withdrawn), growth hormone and IGF-1 in older adults (small studies), deep sleep, diagnosing pituitary function Clinical trials No coded reports yet subcutaneous injection, daily (usually at bedtime) Formerly FDA approved (Geref, withdrawn 2008); now available only compounded or as a research chemical; prohibited by WADA
TB-500 (Thymosin Beta-4) Healing Peptide wound healing, heart attack recovery, corneal injury and dry eye, brain injury Animal No coded reports yet subcutaneous injection in community use; topical, eye drops, intraperitoneal, and intravenous in studies Research chemical; not FDA approved; prohibited by WADA
Tesamorelin Growth Hormone Secretagogue visceral (deep belly) fat in HIV lipodystrophy, liver fat in HIV, memory and executive function in older adults (one trial), age-related belly fat (off-label, untested) Clinical trials No coded reports yet subcutaneous injection, daily FDA approved (Egrifta) for HIV-associated lipodystrophy; prescription only; off-label use legal; prohibited by WADA
Thymosin Alpha-1 Immune Modulator chronic hepatitis B (approved abroad), hepatitis C (with interferon), melanoma and other cancers as an adjunct, severe sepsis, vaccine response in older adults Clinical trials No coded reports yet subcutaneous injection, usually twice weekly Approved in 35+ countries (Zadaxin); not FDA approved; available compounded and as a research chemical in the US; not on the WADA list
Tirzepatide GLP-1/GIP Dual Agonist chronic weight management, type 2 diabetes, obstructive sleep apnea, heart outcomes (trial ongoing) Clinical trials No coded reports yet subcutaneous injection, weekly FDA approved (Mounjaro, Zepbound); prescription only; compounded versions restricted by the FDA; not on the WADA list

Evidence scale: Anecdotal, Animal, Small human, Clinical trials. Filled squares mark the strongest evidence available for that peptide. Dashed squares mean the page has not been rated yet. What people say: public forum reports coded one by one (helped, mixed, no effect, bad experience); the bar shows the split and the label is called only once there are at least 8 reports.