🇺🇸 Vitamin C in United States

74,261 US adverse-event reports

Safety signals — FAERS

Adverse reaction reports describe suspected side effects. A report does not mean the drug caused the event — co-medications, underlying disease and coincidence all contribute.

• Window: 22 April 2025 – 22 April 2026
• Total reports: 74,261

Most-reported reactions

1. Fatigue — 11,152 reports (15.02%)
2. Headache — 8,008 reports (10.78%)
3. Nausea — 7,854 reports (10.58%)
4. Pain — 7,797 reports (10.5%)
5. Diarrhoea — 7,548 reports (10.16%)
6. Drug Ineffective — 7,454 reports (10.04%)
7. Off Label Use — 7,219 reports (9.72%)
8. Dyspnoea — 5,903 reports (7.95%)
9. Arthralgia — 5,681 reports (7.65%)
10. Dizziness — 5,645 reports (7.6%)

Source database →

Frequently asked questions

Is Vitamin C approved in United States?

Vitamin C does not currently have US marketing authorisation in our dataset.

Who is the marketing authorisation holder for Vitamin C in United States?

United States Army Institute of Surgical Research is the originator. The local marketing authorisation holder may differ — check the official source linked above.