bpc 157 explained Regeneration or Risk? A Narrative Review of BPC-157 for Musculoskeletal Healing BPC-157 Dosing Guide: 5mg Vials
Description
Vitamin B12 deficiency can cause tinnitus, 2

Because every pharmacy uses different concentrations, different vial sizes, and different B12 formulations
Gastroenterol Clin Biol

However, very high doses taken over long periods can potentially cause nerve issues or mask other nutrient deficiencies