Like most supplements, vitamin B complex can cause side effects, depending on the dose and type of vitamin B. Find a list of ...

This is because the body does not retain excess amounts. According to the ODS, the RDA of vitamin B12 by age is as follows: During pregnancy, the RDA of vitamin B12 is 2.6 mcg. A female needs 2.8 ...

The RDA of vitamin B12 for adults is 2.4 mcg. Food sources high in vitamin ... The RDA of magnesium for adult men is 420 mg, and for adult women, it is 320 mg. Foods that are high in magnesium include ...