Supplements

Zinc in supplements · page 190

9,087 supplements on the U.S. market list Zinc with an amount per serving. The official Tolerable Upper Intake Level for adults is 40 mg a day.

Tolerable Upper Intake Level (UL)

The highest daily amount that is unlikely to cause harm for almost all healthy people, from food, drinks and supplements combined.

AgeMenWomenPregnancyBreastfeeding
0-6 months4 mg4 mg——
7-12 months5 mg5 mg——
1–3 years7 mg7 mg——
4–8 years12 mg12 mg——
9–13 years23 mg23 mg——
14–18 years34 mg34 mg34 mg34 mg
19+ years40 mg40 mg40 mg40 mg

Source: NIH ODS Zinc Fact Sheet for Health Professionals, Table 3 (updated 2026-01-06).