bpc 157 healing peptide BPC-157 Explained: Benefits, Safety & Oral vs Injectable Options The Hidden Risks of BPC‑157:
Description
Any injection procedure carries risk

2001;49(6):14551457 [DOI] [PubMed] [Google Scholar] 40
MIC B12 injection therapy is often discussed in relation to energy support, metabolism, nutrient balance, and liver-related wellness pathways

It depends on what type and who is taking them

There are some very rare side effects listed in medical literature (mostly when large doses are given): for example, one out of many thousands of patients might develop a disturbance in liver enzymes or a tingling in the fingers or toes