How to Choose the Best BPC 157 Peptide Capsules: A Complete Buyer's Guide BPC 157 Pure Oral Spray, Integrative Peptides Professional Supplement Center The Human Lab Rats Injecting Themselves with Peptides Office for Science and Society McGill University People often ask about the difference between BPC 157 arginate and acetate forms, and the answer comes down to stability and absorption. When were talking about oral BPC 157, the arginate form is far 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.