It is used to treat folic acid deficiency and certain types of anemia (lack of red blood cells) caused by folic acid deficiency.
Headache, unpleasant taste, upset stomach
Use with caution in undiagnosed anemias. Taking folic acid might mask anemia caused by vitamin B12 deficiency and delay appropriate treatment.
Taking folic acid supplements might make seizures worse in people with seizure disorders, particularly in high doses.