Supplements
Vitamin C in supplements · page 241
13,741 supplements on the U.S. market list Vitamin C with an amount per serving. The official Tolerable Upper Intake Level for adults is 2,000 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.
| Age | Men | Women |
|---|---|---|
| 0-6 months | — | — |
| 7-12 months | — | — |
| 1–3 years | 400 mg | 400 mg |
| 4–8 years | 650 mg | 650 mg |
| 9–13 years | 1,200 mg | 1,200 mg |
| 14–18 years | 1,800 mg | 1,800 mg |
| 19+ years | 2,000 mg | 2,000 mg |
Source: NIH ODS Vitamin C Fact Sheet for Health Professionals, Table 3 (updated 2025-07-31).
Supplements with Vitamin C
13,741 shown · page 241 of 287
Label data: NIH Office of Dietary Supplements, Dietary Supplement Label Database (dsld.od.nih.gov), public domain. Upper limits: NIH ODS Fact Sheets for Health Professionals (values from the Institute of Medicine, Food and Nutrition Board).