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Unlike many peptides of similar size, BPC-157 exhibits notable stability in human gastric juice, maintaining its biological activity even under highly acidic conditions a property that distinguishes it from most bioactive peptides

Unlike testosterone therapy, estrogen therapy, growth hormone therapy, or other hormone-based treatments, BPC-157 is generally not considered a hormone replacement treatment

10.3889/oamjms.2015.111 Open Access

At the concentrations typically found in cosmetic products, systemic absorption through intact skin is considered minimal, and copper toxicity from topical use has not been reported in the published literature

It may not be surprising that it may benefit bone repair as well