What are the potential side effects of BPC 157?

The main potential concern discussed is promoting tumor growth: BPC-157 can increase VEGF and blood-vessel growth (angiogenesis), which could theoretically help an existing tumor grow. The transcripts describe this as a theoretical risk, not a confirmed adverse effect in humans; the guest notes that animal studies have not shown a cancer signal, while stressing that the evidence is limited and human data are sparse. 1 2

Other concerns mentioned include worsening visible blood-vessel changes, such as spider-web-like facial angiomas, based on an individual’s observation, and fever or tingling from LPS contamination in some non-prescription products. The latter reactions may reflect contamination rather than BPC-157 itself. 3 4

Overall, the side-effect profile is uncertain: BPC-157 is not FDA-approved, and the transcripts emphasize limited human safety data and risks from unreliable sourcing. 5