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According to a study published in Frontiers in Pharmacology, intramuscular administration of vitamin B12 produces a faster increase in serum levels compared to oral routes, although both methods are effective in restoring normal cobalamin levels in patients with deficiency
Some talk about mega doses of 100130 mg/d for 220 lb body weight
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As an essential nutrient, vitamin B12 plays a vital role in energy production, red blood cell formation, and the healthy functioning of your nervous system
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