Question: how much folic acid is safe to take?
Answer: Prescription folic acid for pregnant women is usually for 1 mg (i.e., 1,000 mcg) tablets. Adults over 18, including pregnant women, should not take more than 1,000 mcg of folic acid a day. Boys and girls 14 to 18 years old should not take more than 800 mcg; those ages 9 to 13 should not take more than 600 mcg.