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Nevertheless, a pharmacy can not dispense, and a physician is not supposed to administer a medicine beyond its expiration date
Thats because utilization of vitamin B12 (especially from supplements) depends on levels of other metabolic cofactors and acids
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Annu Rev Biochem
A patient with unexplained fatigue should be worked up, not injected masking a B12 deficiency of unclear cause, or an unexamined thyroid problem, with a monthly shot is a real clinical risk
You have a vial of bacteriostatic water in the fridge
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