Peptide to increase penis size: What the evidence and real testing actually show You're injecting what now?! We've been flooded with questions about injectable peptides, so here's the bottom line: I would not inject these into myself or anyone I care about. Note: This is Peptides BPC 157 promise to help heal and recover you from injuries and tough workouts (and do way more than that sometimes too!). But theres limited research into their effectiveness. So how do you They Call It the 'Wolverine Peptide.' And Everyone from Biohackers to Your Dad Wants It Now.