BPC 157 Pure Spray 100mcg per Spray Limitless Biotech BPC 157 and Erectile Dysfunction: What the Evidence Actually Shows I Took The Wolverine Stack & My Thoughts On BPC 157 & TB 500 BPC 157 has already hit the mainstream, but should it hit your bloodstream? People talk about BPC 157 like it's one thing. It isn't. Oral BPC 157 stays local. It survives digestion long enough to act on the GI mucosa, then clears before it reaches systemic circulation.