Preclinical / animal-only
Tested in cells or animals — not humans. Most off-label peptides live here.
Preclinical research means studies in cells (in vitro) or animals (rodents, dogs, primates), without any human data. About a sixth of the peptides in our catalog are preclinical only — BPC-157, TB-500, KPV, IGF-1-LR3, PEG-MGF, 5-amino-1MQ, Humanin, FOXO4-DRI, Melanotan-II, Dihexa. The Stack Builder refuses to pre-fill doses for these compounds because there's no human trial reference to compare against.
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