bpc 157 uses safety research The Hidden Risks of BPC‑157: What Patients Need to Know About Contamination and BPC-157 Explained: Benefits, Safety &
Description
Since BPC-157 isn't regulated as a drug, quality varies widely between sources

10.1016/j.bbamem.2018.03.026 224 PanahiA.BandaraA.PantelopulosG

Even if you took it years ago

The prevalence of a B12 deficiency in patients who are overweight is estimated to be about 2-18%
After completing the 3-month active cycle, we offer an optional Optimization Panel for patients who want a full picture of how their body responded
