fda category 2 bulk drug substances bpc-157 list of the Federal Food, Drug, and Cosmetic Act (FDCA).* Is BPC-157 Banned? Oral vs.
Description
Its biology

Increased Cancer Risk: Some contaminants or impurities in unregulated peptides could have carcinogenic properties, potentially increasing the risk of cancer with long-term use
Insulin sensitivity shifts become more likely when multiple growth-promoting compounds are used simultaneously

They diverge in molecular stability, required administration route, mechanistic depth (particularly the beta3-adrenergic data for AOD-9604), and the weight of clinical evidence behind each