NBA Most Valuable Player candidate Stephen Curry (center) shined during the 2008 NCAA Men's Basketball Tournament. Here he celebrates a second-round win over Georgetown with his Davidson College teammates after a 25-point second-half performance.
(7) The Institute recommends against getting more than 1,000 micrograms per day of folic acid from supplements or fortified food; folate intake from food is not a concern. One main reason for the upper limit on folic acid is that getting too much folic acid can mask the signs of a vitamin B12 deficiency.
For cancer (general), 0.2-40 milligrams of folate or folic acid (either taken alone or in combination with aspirin, vitamin B6, or vitamin B12) has been taken by mouth daily for 3-8 years, with mixed results. For cognitive effects, 0.75-15 milligrams of folic acid has been taken by mouth daily for 1-36 months.