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Hydroxocobalamin is another highly bioavailable natural form frequently administered via injection due to its excellent retention in the bloodstream

B complex Vitamins Vitamin B complex refers to the eight B vitamins that play an important role in converting food into fuel, staying energized and supporting a healthy metabolism

Applied physiology, nutrition, and metabolism = Physiologie appliquee, nutrition et metabolisme , 46 (9), 11331142

A blood test is used to diagnose vitamin B12 deficiency

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Good food sources include meat, fish, eggs, and dairy products, so those who are vegan or vegetarian may not get enough B12