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Before using this medication, tell your doctor or pharmacist of all prescription and nonprescription/herbal products you may use, especially of: drugs that may affect blood cell production (e.g., chloramphenicol, anti-cancer drugs, HIV drugs), other vitamins/nutritional supplements (especially folic acid)
Doctors may also check: Methylmalonic acid (MMA) Homocysteine levels Complete blood count (CBC) These markers can provide a clearer picture of deficiency
For patients without absorption disorders, high-dose oral supplements of 1,000 to 2,000 mcg daily have been shown to be comparably effective at correcting mild to moderate deficiency at lower cost and greater convenience.
The most common forms used are cyanocobalamin (stable, widely available) and methylcobalamin (the active form, preferred by some providers for neurological support)
Upon birth, infants consume a lot of vitamin B12 when breastfeeding
