How much is the RDA for B12?

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2.4 μg/day
The Recommended Dietary Allowance (RDA) for vitamin B12 is based on the amount needed for the maintenance of hematological status and normal serum vitamin B12 values. An assumed absorption of 50 percent is included in the recommended intake. The RDA for adults is 2.4 μg/day of vitamin B12.

Is 20 mcg of B12 too much?

When taken at appropriate doses, vitamin B-12 supplements are generally considered safe. While the recommended daily amount of vitamin B-12 for adults is 2.4 micrograms, higher doses have been found to be safe. Your body absorbs only as much as it needs, and any excess passes through your urine.

Is 15 mcg of B12 enough?

The recommended daily intake (RDI) for vitamin B12 for people over 14 is 2.4 mcg ( 1 ).

What is the Recommended Dietary Allowance (RDA) for B12?

The Recommended Dietary Allowance (RDA) for vitamin B12is based on the amount needed for the maintenance of hematological status and normal serum vitamin B12values. An assumed absorption of 50 percent is included in the recommended intake. The RDA for adults is 2.4 μg/day of vitamin B12.

What is the RDI for vitamin B12?

The RDI for vitamin B12 ranges from 2.4 mcg for adults to 2.8 mcg for breastfeeding women. Most people meet these needs through diet alone, but older adults, people on strict plant-based diets, and those with digestive disorders may benefit from supplements, though dosages vary based on individual needs.

Is there a UL for vitamin B12?

The FNB did not establish a UL for vitamin B12 because of its low potential for toxicity [ 1 ]. Even at large doses, vitamin B12 is generally considered to be safe because the body does not store excess amounts. Vitamin B12 has the potential to interact with certain medications.

What is vitamin B12 (vitamin B12)?

For a reader-friendly overview of Vitamin B12, see our consumer fact sheet on Vitamin B12. Vitamin B12 is a water-soluble vitamin that is naturally present in some foods, added to others, and available as a dietary supplement and a prescription medication.