l acetyl l glutathione S-Acetyl-L-Glutathione 60 caps S-Acetyl-L-glutathione | CAS 3054-47-5 |

Endurance athletes face unique challenges that may increase B12 needs: prolonged training sessions stress the digestive system, potentially impairing absorption, while increased red blood cell turnover demands consistent B12 availability

Piers et al., 2012

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Symptoms : Similar to Graves disease but without ophthalmopathy