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BPC-157 is not approved for human use and is often sold as a research chemical or dietary supplement, which raises concerns about quality and safety

Enhanced healing of ulcers with topical glycyl-L-histidyl-L-lysine copper

Intracellular concentrations of 4HNE may be critical for cells 13

Even if both are the same concentration, combining them introduces unnecessary contamination risk and makes tracking the 28-day expiration window impossible

The Regulatory Framework: A History of Restriction To understand why the 2026 reclassification is so monumental, one must first look back at the Bulk Drug Substances lists maintained by the FDA under sections 503A and 503B of the Federal Food, Drug, and Cosmetic Act