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injectable and systemic anti-aging claims are less established and face safety or evidence gaps

BPC-157 Is Classified as an Unapproved New Drug According to the FDAs definition, any substance that claims to treat, diagnose, cure, or prevent disease is considered a drug. If it hasnt gone through the FDAs rigorous review and approval process, its classified as unapproved and illegal to market or distribute for human consumption

SAG S-acetyl-glutathione One or more of the above objects can be achieved, at least in part, by orally administering to an individual in need thereof an effective amount of a direct precursor of glutathione, S-acetyl-glutathione (SAG), in a delayed release delivery form that is orally bioavailable to achieve a significant elevation in circulating glutathione levels

Some people use it experimentally for circadian rhythm support or anti-aging purposes, though these applications remain investigational