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Although they can be given safely as frequently as once a week, we recommend once every 2 to 4 weeks
Zone 41
- If you experience any side effects, talk to your doctor or pharmacist
Functional cobalamin deficiency in the general United States population (2024) What was found: researchers analyzing more than 22,000 adults from the National Health and Nutrition Examination Survey defined functional cobalamin deficiency as a raised methylmalonic acid despite a serum B12 above 400 pg/mL
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