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Summary: The correct dosage of B12 for healthy UK adults is 1.5 micrograms daily for maintenance, whilst treatment of deficiency requires substantially higher doses of 1,0002,000 g orally or 1 mg intramuscular injections
doi: 10.1146/annurev-immunol-041015-055605 94 CrottyS
Collagen is usually taken after meals, mostly in the daytime, because it works well with other nutrients
Usually avoid combinations
