Vitamin B12 - Dosages

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Dosage Recommendations/Body Content  

Minimum Daily Requirement

 The absolute minimum daily requirement for Vitamin B12 is 2.4 micrograms and this is the amount set by government authorities in the USA as the Recommended Daily Allowance (RDA).

 

Optimal Daily Requirement

 The optimal daily requirement (ODA) for Vitamin B12 (for adults) is 500 - 2,000 micrograms (0.5 - 2.0 mg) per day.

 

Vitamin B12 Deficiency

 For people who have been diagnosed by a medical practitioner as being deficient in Vitamin B12, the daily dosage needed to restore levels to normal ranges is 1,000 - 2,000 micrograms (1 - 2 mg) per day.  The usual protocol is to take 2,000 micrograms of Vitamin B12 for one month followed by 1,000 micrograms per day thereafter.

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