Bacterial growth without the benzyl alcohol preservative rapidly contaminates the solution and can introduce infection risk
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If you experience any suspected side effects from B12 supplementation (such as injection site reactions, allergic responses, or other unexpected symptoms), report these through the MHRA Yellow Card scheme (yellowcard.mhra.gov.uk)
This meant that under the 2013 Prohibited Substances and Methods List, the substance fell into the S.0 category, WADA said
Key takeaways Regulatory Status: As of April 2026, BPC-157 is classified as a Category 2 bulk drug substance by the FDA prohibited in compounding under Section 503A and 503B
Human efficacy unproven