Can too much folic acid cause side effects?


Quick Answer

Doses of 15 milligrams of folic acid daily can cause side effects, including sleep disturbances, anxiety, depression, impaired judgment and concentration problems, notes Drugs.com. Nausea, bloating, gas and bitter taste are other reported side effects. Patients with epilepsy who receive high doses of parenteral folic acid sometimes experience increased seizures.

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Full Answer

Individuals taking at least 400 micrograms of folic acid per day sometimes experience a decrease in zinc absorption, which can lead to zinc deficiency in some people, states Drugs.com. Folic acid supplements treat folic acid deficiency and certain forms of anemia. Folic acid is a B vitamin naturally found in foods such as lentils, peas, oranges and beets.

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