ANSWER: The DV (a replacement for what we used to call the recommended daily allowance, or RDA) for vitamin B12 is 2.4 mcg.

One review recommended that those with vitamin B12 deficiency take 1 mg of vitamin B12 daily for a month, followed by a maintenance dose of 125–250 mcg per day (21 Trusted Source).

When your body doesn't receive enough vitamin B12, it slows the growth of red blood cells. A cumulative loss of red blood cells can result in vitamin B12 deficiency anemia. With it, you can experience ...

Recommended Daily Intake of Vitamin B12. ... These doses seem significantly higher than the RDA of vitamin B12, but your body absorbs only a small percentage of them. Other Considerations.

A hundred percent of the recommended daily allowance (2.4 mcg daily) is enough to meet the nutritional requirements for 97.5% of the population, so 200% is very likely to be sufficient. That being ...

Meat, eggs and dairy products are all naturally high in vitamin B12, but exactly how much should you be eating to meet the daily recommended dose? Express. Home of the Daily and Sunday Express.

Most supplements contain way more than the daily recommended value of vitamin b12 (which is just 2.5 mcg), meaning you don't necessarily need to take the supplement every day.

A hundred percent of the recommended daily allowance (2.4 mcg daily) is enough to meet the nutritional requirements for 97.5% of the population, so 200% is very likely to be sufficient.