PepsBPC-157 vs TB-500
Neither is FDA-approved, and neither has a controlled human trial. BPC-157’s human record is a two-person safety pilot and a small knee-pain chart review with no control group.
Peptide comparisons
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Side-by-side comparisons of peptides people often weigh against each other: FDA status, the human evidence, safety and the claims made for each. No doses, prices or seller links.
Semaglutide vs Tirzepatide
Both are FDA-approved prescription medicines, sold under specific brand names for type 2 diabetes and weight management. Semaglutide acts on the GLP-1 receptor; tirzepatide acts on both the GIP and GLP-1 receptors.
Tirzepatide vs Retatrutide
Tirzepatide is FDA-approved; retatrutide is still investigational and not FDA-approved. Retatrutide adds a third target, the glucagon receptor, to tirzepatide’s GIP and GLP-1.
CJC-1295 vs Ipamorelin
Both are unapproved compounds that raise growth hormone, by different routes. CJC-1295 mimics growth-hormone-releasing hormone (GHRH); ipamorelin acts on the ghrelin receptor as a growth-hormone secretagogue.
Sermorelin vs Tesamorelin
Both are versions of growth-hormone-releasing hormone (GHRH). Tesamorelin (Egrifta) is FDA-approved for one use: reducing excess abdominal fat in people with HIV-associated lipodystrophy.
Selank vs Semax
Both are short synthetic peptides developed in Russia, and neither is FDA-approved. Selank is studied for anxiety; Semax for recovery after stroke and other brain conditions.
MOTS-c vs Elamipretide
Both target mitochondria, but they sit in very different places. Elamipretide (SS-31) is FDA-approved as Forzinity for Barth syndrome, a rare genetic disease.
Ipamorelin vs MK-677
Both push the body to release more growth hormone through the ghrelin receptor, and neither is FDA-approved. Ipamorelin is a peptide; MK-677 (ibutamoren) is a small molecule taken by mouth in its trials, not a peptide.
AOD-9604 vs HGH Fragment 176-191
Both are pieces of growth hormone marketed for fat loss, and neither is FDA-approved. AOD-9604 is a modified fragment that went through a human obesity program; in its main study (OPTIONS, 502 people randomized), oral AOD-9604 did not beat placebo on weight loss.
Thymosin alpha-1 vs Thymosin beta-4
Despite the shared name, these are unrelated proteins with different jobs. Thymosin alpha-1 (thymalfasin) is an immune peptide approved in many countries but not by FDA.
Tesamorelin vs CJC-1295
Both mimic growth-hormone-releasing hormone (GHRH). Tesamorelin is FDA-approved for one use: reducing excess abdominal fat in people with HIV-associated lipodystrophy.
GHK-Cu vs AHK-Cu
Both are copper peptides: related, but different molecules. GHK-Cu is a common skin-care ingredient whose selected studies are animal and lab work plus one small randomized skin-care trial (13 people) that found no objective benefit; AHK-Cu has been studied only in donated hair follicles and cultured cells.
Epitalon vs Pinealon
Both are very short synthetic peptides from the Russian “bioregulator” research tradition, marketed for aging and brain health. Neither is FDA-approved, and the evidence for both is mostly cell and animal work.
Compare any two peptides’ study cards →
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