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Description
Athlete s: B12 injections may aid athletes in improving energy levels and supporting physical performance

Those following a vegan diet or with a history of heavy alcohol consumption might need higher B12 supplement dosages

Because B12 is water-soluble, your body uses what it needs and passes most of the excess, and there is no established upper intake limit because harmful effects from high intake have not been well documented

(For example, taking large amounts of folic acid has been found to mask vitamin B12 deficiency in some patients.) What Are B12 Shots