BPC 157 Precision Performance Physical Therapy Most peptides are broken down in the stomach and not absorbed when taken orally, which is why injectable forms are often used. BPC 157 is a unique exception. Because it originates from the gut, its Theres a lot of confusion about the difference between BPC 157 arginate and acetate forms, so lets clear that up. The key distinction comes down to stability in the gut. This only applies to oral BPC 157 Arginate Salt vs BPC 157 5mg Capsules