injection vitamin b12 cyanocobalamin up to 1000 mcg (B12) mcg/mL, Multiple Dose Vial 1 mL, 25/Tray Cyanocobalamin (Vitamin B12) Injection is sold as an FDA approved generic drug Compounded Cyanocobalamin (Vitamin B12) Injection

For the best results, maintain a healthy diet, exercise regularly, and follow a balanced lifestyle

It is likely that many patients will require intramuscular B12 replacement for the duration of their metformin treatment, although a trial of oral replacement initially may be worthwhile.

Concomitant use with coumarin anticoagulants such as warfarin has been associated with elevations in the international normalized ratio, requiring closer INR surveillance and potential dose adjustment

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Researchers in the 1940s were apparently following a valuable lead by showing that estrogen is not fully inactivated by the liver if there is a vitamin B deficiency