What are the negative effects of BPC-157?

Nobody can give a reliable answer for people, because BPC-157 has no completed controlled human trial and no established human safety profile. Published safety data come from animal studies, including a 2022 pharmacokinetic study that tracked how it is absorbed and cleared in rats and dogs. Long-term effects are unknown.

Reviewers flag one theoretical concern. BPC-157 promotes new blood vessel growth through VEGFR2, and tumors depend on new blood vessels, so a pro-angiogenic peptide could in principle support existing tumors. That hasn’t been tested directly. Impurities in poorly made product are another open question, which is why every lot we sell is screened as described on our lab testing page. Buy BPC 157 online for research only.