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By age 60, that concentration has fallen to approximately 80 ng/mL, a 60% decline that correlates directly with reduced healing capacity, collagen loss, and visible aging

The side effects we see in clinic are generally mild: transient injection site reaction, occasional mild nausea if starting at too high a dose, infrequent headache or lightheadedness in the first week

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This suggests that glutathione might protect against age-related diseases including cancer, diabetes, and arthritis, which have been linked to high levels of oxidative stress

Drug testing implications WADA, the World Anti-Doping Agency, prohibits BPC-157 and related peptides in competitive athletics