Browse 25 peptides with evidence grades, dosing, safety, and vendor scores.

Epitalon (also spelled epithalon or epithalone) is the peptide that longevity enthusiasts desperately want to work. A simple tetrapeptide — just four amino acids — that activates telomerase,…

Cerebrolysin is a porcine (pig) brain-derived peptide preparation consisting of low-molecular-weight neuropeptides and free amino acids obtained through standardized enzymatic proteolysis of purified…

Delta Sleep-Inducing Peptide (DSIP) is a nine-amino-acid neuropeptide first isolated from the cerebral venous blood of rabbits during electrically induced sleep in 1977 by a research group in…

Gonadorelin is synthetic gonadotropin-releasing hormone (GnRH). Clinically used pulsatile; currently prescribed off-label in TRT protocols as an HCG alternative.

IGF-1 LR3 (Long R3) is an analog of insulin-like growth factor 1 with an extended N-terminus and Arg3 substitution, increasing half-life and reducing binding-protein affinity.

Kisspeptin is a neuropeptide that functions as the master upstream regulator of reproductive hormone production in humans. It is the signal that tells the hypothalamus to start the entire cascade of…

KPV is a tripeptide (lysine-proline-valine) derived from the C-terminal end of alpha-melanocyte stimulating hormone (alpha-MSH), a neuropeptide with well-established anti-inflammatory properties.…

LL-37 is the only human cathelicidin antimicrobial peptide — a 37-amino-acid peptide that represents one of the body's most important first-line defense molecules against infection. It is produced by…

MK-677, also known as ibutamoren or ibutamoren mesylate, occupies a unique position in the growth hormone secretagogue landscape for one simple reason: you swallow it. In a world where virtually…

MOTS-c is the longevity peptide that actually has serious science behind it — and by "serious science," we mean a clearly defined origin, an identified mechanism, independent research from multiple…

PT-141, known by its generic name bremelanotide and marketed as Vyleesi, is the only FDA-approved peptide specifically designed to treat hypoactive sexual desire disorder (HSDD) in premenopausal…

Selank (TP-7) is a synthetic heptapeptide developed at the Institute of Molecular Genetics of the Russian Academy of Sciences. It is a structural analog of the naturally occurring immunomodulatory…

Semax (Met-Glu-His-Phe-Pro-Gly-Pro) is a synthetic heptapeptide analog of the adrenocorticotropic hormone (ACTH) fragment ACTH(4-10). It was developed at the Institute of Molecular Genetics of the…

Sermorelin holds a unique position in the peptide world: it is one of the few growth hormone secretagogues that actually achieved FDA approval, was used clinically for years, and then quietly…

SS-31, known in clinical development as elamipretide and formerly as Bendavia and MTP-131, is the most clinically advanced mitochondrial-targeted peptide in existence. Unlike most peptides in the…

Tesamorelin is the rare peptide that doesn't require you to extrapolate from rat studies or rely on anecdotal reports from internet forums. It has current FDA approval, robust Phase III clinical…

Thymosin Alpha 1 (Ta1) is a 28-amino-acid peptide naturally produced by the thymus gland that serves as a critical regulator of immune system function. It is one of the most clinically validated…

BPC-157 is the most discussed regenerative peptide in the biohacking and functional medicine communities, and arguably the most overhyped compound relative to its actual evidence base. It has over…

CJC-1295 is arguably the most popular growth hormone-releasing hormone (GHRH) analog in the anti-aging and peptide therapy landscape, and also one of the most confusing. The confusion stems from a…

GHK-Cu stands apart in the research peptide landscape for a reason that should matter enormously to anyone evaluating these compounds: it has actual human data. While the peptide world is dominated…

Ipamorelin has earned a reputation as the "cleanest" growth hormone secretagogue in the peptide therapy toolkit, and for once, a peptide's reputation is actually supported by its pharmacological…

Retatrutide may be the most potent weight-loss molecule ever tested in humans. In a Phase 2 clinical trial, participants receiving the highest dose lost an average of 24.2% of their body weight over…

Semaglutide is the drug that transformed weight loss from a willpower narrative into an endocrinology conversation. Before semaglutide, the pharmaceutical approach to obesity was a graveyard of…

TB-500 is a synthetic peptide fragment of thymosin beta-4 (TB4), a naturally occurring 43-amino-acid protein found in nearly every human cell. While TB-500 and thymosin beta-4 are often used…

Tirzepatide is the most effective FDA-approved weight-loss drug in history. That is not an editorial opinion — it is a straightforward reading of the clinical trial data. In the SURMOUNT-1 trial,…