The peptide library Every peptide, in plain English Search a peptide, then open it to see what people use it for and how much real research is behind it.
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All Weight loss Healing & recovery Growth hormone Skin & tanning Mind & mood Longevity & mitochondria Immune & inflammation Sexual health
21 peptides
Strongest evidence Most research A to Z
Approved Weight loss Liraglutide Weight loss (Saxenda) and type 2 diabetes (Victoza). A daily GLP-1 drug that came before semaglutide. 561 randomized trials514 registeredView evidence Approved Weight loss Semaglutide Weight loss and type 2 diabetes. One of the most prescribed drugs in the world. 311 randomized trials779 registeredView evidence Approved Weight loss Tirzepatide Weight loss and type 2 diabetes. Dual GIP/GLP-1 agonist. 133 randomized trials298 registeredView evidence Approved Growth hormone Tesamorelin Reducing abdominal fat in HIV lipodystrophy (the approved use); promoted off-label for body composition. 21 randomized trials24 registeredView evidence Approved Sexual health PT-141 Low sexual desire. Approved for premenopausal women; also used off-label by men. 14 randomized trials10 registeredView evidence Approved Growth hormone Sermorelin Stimulating growth hormone release; offered by "anti-aging" and hormone clinics. 0 randomized trials27 registeredView evidence Human trials Immune & inflammation Thymosin alpha-1 Immune support and as an add-on in infections and cancer, mainly outside the US. 39 randomized trials65 registeredView evidence Human trials Growth hormone GHRP-6 Raising growth hormone; known for increasing appetite. 19 randomized trials0 registeredView evidence Human trials Weight loss Retatrutide Weight loss. A triple GIP/GLP-1/glucagon agonist still in phase 3 trials, widely sold online before approval. 8 randomized trials33 registeredView evidence Human trials Skin & tanning Melanotan II Tanning and libido. Sold online; regulators have warned against it. 4 randomized trials1 registeredView evidence Human trials Growth hormone Ipamorelin A growth hormone secretagogue, usually taken with CJC-1295 for body composition and recovery. 2 randomized trials3 registeredView evidence Human trials Mind & mood Selank Anxiety and stress. Also developed in Russia. 2 randomized trials2 registeredView evidence Human trials Growth hormone CJC-1295 Raising growth hormone for "anti-aging", body composition and sleep. 1 randomized trial1 registeredView evidence Human trials Mind & mood Semax Focus, memory and stroke recovery. Developed in Russia and used there as a medicine. 1 randomized trial0 registeredView evidence Animal only Longevity & mitochondria MOTS-c Metabolism, exercise capacity and "longevity". A peptide encoded by mitochondrial DNA. 4 randomized trials5 registeredView evidence Animal only Healing & recovery TB-500 Injury recovery and "tissue repair", often stacked with BPC-157. 3 randomized trials18 registeredView evidence Animal only
GHK-Cu
ANIMAL ONLY
Skin & tanning GHK-Cu Anti-aging skincare, wrinkles, hair and wound healing. Common in cosmetic serums. 1 randomized trial3 registeredView evidence Animal only Healing & recovery BPC-157 Tendon, ligament, muscle and gut healing. Popular with lifters and runners dealing with injuries. 0 randomized trials4 registeredView evidence Animal only Weight loss AOD-9604 Fat loss. A fragment of growth hormone sold as a "fat burner". 0 randomized trials0 registeredView evidence Animal only Longevity & mitochondria Epitalon Longevity, sleep and "telomere" claims. 0 randomized trials0 registeredView evidence Animal only Immune & inflammation KPV Gut and skin inflammation. A short fragment of the hormone alpha-MSH. 0 randomized trials0 registeredView evidence No peptide matches that search.
How much human research exists? Randomized trials Registered trials All papers
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About these numbers Counts come live from PubMed and ClinicalTrials.gov. "Randomized trials" counts PubMed papers tagged as randomized trials that mention the peptide, which can include studies that only measure it rather than test it as a treatment. "People use it for" describes common claims, not recommendations. Educational only, not medical advice.
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