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However, oral supplements face a significant hurdle: the human digestive tract
doi:10.1186/s12967-022-03271-4
8 World Anti-Doping Agency Prohibited ListBPC-157 (S0 non-approved substances) and TB-500 / thymosin 4 are prohibited in sport at all times
Stopping injections will lead to recurrence of deficiency, as the underlying malabsorption cannot be corrected
