[3] [8] Patients receiving B12 injections should inform their healthcare provider of all medications, as certain drugs (including metformin, proton pump inhibitors, and chloramphenicol) can affect B12 absorption or metabolism
Gwyer D et al., "Gastric pentadecapeptide body protection compound BPC 157 and its role in accelerating musculoskeletal soft tissue healing," Cell and Tissue Research, 2019 (review of preclinical evidence)
From a clinical standpoint, peptides play an important role in areas like metabolic health, hormone balance, and weight management
Glutathione and glutathione transferase levels in mouse granulocytes following [PMID: 3940639] Laboratory literature summary: Glutathione and glutathione transferase levels in mouse granulocytes following cyclophosphamide administration
B12 levels typically peak within 48 hours of the injection
GHK-Cu has the longest human safety record through decades of cosmetic use, with no significant systemic adverse events reported in topical applications 34