The FDA requires extensive animal testing before human trials specifically because dangerous substances generally produce detectable harm in animal models
They said the first, BPC-157, was one of the more commonly used peptides
There was a large increase in breast milk B12 that dropped to baseline levels over the course of 5 to 6 days
AOD-9604 is a synthetically derived peptide fragment corresponding to amino acids 177191 of human growth hormone (hGH)
Last reviewed: June 27, 2026 Last updated: June 27, 2026 Written by: Jay Hastings, CEO of PlexusDx Jay Hastings is the CEO of PlexusDx, a precision health company focused on genetic testing, blood biomarker insights, and personalized wellness recommendations
However, the thigh, upper arm, and glute area can also be appropriate depending on the peptide and your providers instructions