Folic acid (folate)

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Vitamin B9 benefits

Vitamin B9 source

Vitamin B9; Folate; Diet - folic acid; Pteroylglutamic acid

Folic acid deficiency may cause poor growth, gray hair, swollen tongue (glossitis), mouth ulcers, peptic ulcer, and diarrhea. It may also lead to certain types of anemias.

Too much folic acid usually doesn't cause harm, because the vitamin is regularly removed from the body through urine.

Review Date: 01/02/2007
Reviewed By: William McGee, M.D., M.H.A., Assistant Professor of Medicine and Surgery, Tufts University School of Medicine, Boston, MA, and Chairman, Nutrition Committee, Baystate Medical Center, Springfield, MA. Review provided by VeriMed Healthcare Network.