'People are turning themselves into lab rats': the injectable peptides craze sweeping the US Well actually The Guardian BPC 157 aka Wolverine. This peptide is not FDA approved, but it is very popular among the biohacking population. Ashley explains the science behind it, but remember, it doesn't have human data yet, so BPC 157 Banned: Key Facts on the Latest FDA Decision An FDA Reversal on Peptides Could Open the Market to Unsafe Drugs ProPublica Some peptides are FDA approved drugs. Some are legal supplements. Some are neither. The same word, peptide, covers all three categories. The regulatory status of the specific compound is what determines legality.