Water-soluble vitamins
Vitamin C
Antioxidant · collagen
Collagen synthesis, antioxidant, immune function.
Upper-limit caution
The Tolerable Upper Intake Level for Vitamin C is 2000 mg per day. Routine intakes above this level — counting food + supplements — raise the risk of adverse effects. Multivitamins, fortified foods, and standalone supplements stack faster than people expect.
How Vitamin C appears on labels
Supplement labels list Vitamin C under several names depending on the chemical form used. Any of these on an ingredients panel counts toward your Vitamin C intake:
- vitamin c
- ascorbic acid
- l-ascorbic acid
- sodium ascorbate
- calcium ascorbate
- magnesium ascorbate
- ascorbyl palmitate
Deep dive
For mechanism of action, dosing protocols, evidence grade, and interaction warnings on Vitamin C, see the full encyclopedia entry:
Vitamin C encyclopedia entry →Related water-soluble vitamins
Track your full intake
Formulate's free desktop app aggregates Vitamin C (and ~40 other nutrients) across every supplement in your stack — flagging underdoses, overlaps, and upper-limit overshoots in one view.
Get the appMedical disclaimer. This page is educational and does not replace advice from a qualified healthcare provider. Targets and upper limits are general adult reference values; individual needs vary by age, sex, pregnancy status, and clinical context.