FDA Puts BPC 157, TB 500, and 5 Other Peptides Under the Microscope: What Prescribers Need to Know About the 503A Review Lengea 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 doesnt have human data yet, so Peptides for Recovery: TB500 vs BPC 157 vs Copper FDA moves toward easing restrictions on certain peptides BioPharma Dive