Here's what you need to know about the side effects of taking vitamin B12 supplements and whether it is possible to take too much. It is highly ... person taking a 500 mcg oral B12 supplement ...

Registered dietitians explain what vitamin B12 is, how much you need, and the potential side effects of taking too much. Vitamins and minerals are essential for vitality, which may explain why ...

Here's what you need to know about the side effects of taking vitamin B12 supplements and whether it is possible to take too much. It is highly ... person taking a 500 mcg oral B12 supplement ...