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FDA does not pre-approve dietary supplements before they are sold
Good alternative if the abdomen is sensitive
Comparison of the efficacy of parenteral and oral treatment for nutritional vitamin B12 deficiency in children
Using intravenous vitamin B12 shows how different treatments are used around the world
Further increases can be made in 2.5 mg increments (to 7.5, 10, 12.5, and 15 mg) at intervals of at least 4 weeks based on clinical response and tolerability
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