bpc 157 safety adverse effects humans case reports BPC-157: Miracle Healing Peptide or Hidden Danger? BPC-157 Side Effects and Safety:
Description
1 Aged Muscle Stem Cell Rejuvenation Neelakantan et al., Biochemical Pharmacology (2019) In a follow-up study, the authors tested whether NNMT inhibition could reverse the age-related decline in muscle stem cell (satellite cell) function

If you cant get methylcobalamin, pick adenosylcobalamin, which is also a native form of B12
But if this condition persists immediately contact your doctor

no clinical trials validate the combination