Supplements

Folic Acid in supplements

14 supplements on the U.S. market list Folic Acid with an amount per serving. The official Tolerable Upper Intake Level for adults is 1,000 mcg a day (folic acid from supplements or fortified foods; compared only when the label states mcg (not mcg DFE)).

Tolerable Upper Intake Level (UL)

The highest daily amount that is unlikely to cause harm for almost all healthy people; it applies to folic acid from supplements or fortified foods; compared only when the label states mcg (not mcg DFE).

AgeMenWomenPregnancyBreastfeeding
0-6 months————
7-12 months————
1–3 years300 mcg300 mcg——
4–8 years400 mcg400 mcg——
9–13 years600 mcg600 mcg——
14–18 years800 mcg800 mcg800 mcg800 mcg
19+ years1,000 mcg1,000 mcg1,000 mcg1,000 mcg

Source: NIH ODS Folate Fact Sheet for Health Professionals, Table 3 (updated 2022-11-30).