Folic acid is effective for several different uses. However, there is much controversy about some of these claimed uses, such as for cardiovascular disease (see Does Folic Acid Work? for more information).
Because the vitamin has been studied quite a bit, good information about dosing is available. For some of the less studied uses, the most effective (and safe) doses have not yet been established.
(Click Folic Acid Dosage for more information.)
Most people do not experience side effects with folic acid (at normal doses). However, high doses may be associated with side effects such as:
- Abdominal (stomach) cramps
- Sleeping problems
(Click Folic Acid Side Effects to learn more, including potentially serious side effects that you should report immediately to your healthcare provider.)
Folic acid can potentially interact with a few medications (see Folic Acid Drug Interactions).