General Dosage
500-1,000 mg daily for skin benefits
Maximum dose: 2,000 mg/day (NIH Upper Tolerable Intake Level); higher doses may cause GI distress
Vitamin C Dosage Guide
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Dosage Recommendations
General recommendation: 500-1,000 mg daily for skin benefits
Timing: Divided doses (e.g., 500 mg twice daily) improve absorption over a single large dose
Dosage by Condition
| Condition | Recommended Dose | Evidence |
|---|---|---|
| Skin health and anti-aging | 500-1,000 mg daily | Strong |
| Photoprotection | 500-1,000 mg with 400 IU vitamin E daily | Moderate |
| Wound healing | 500-1,000 mg daily pre- and post-surgery | Moderate |
| General antioxidant support | 200-500 mg daily | Strong |
Upper limit: 2,000 mg/day (NIH Upper Tolerable Intake Level); higher doses may cause GI distress
Timing & Absorption
Divided doses (e.g., 500 mg twice daily) improve absorption over a single large dose
Can be taken with or without food.
References
- Pullar JM, Carr AC, Vissers MCM. (2017). The roles of vitamin C in skin health. Nutrients. DOI PubMed
- Cosgrove MC, Franco OH, Granger SP, et al. (2007). Dietary nutrient intakes and skin-aging appearance among middle-aged American women. American Journal of Clinical Nutrition. DOI PubMed
- Moores J. (2013). Vitamin C: a wound healing perspective. British Journal of Community Nursing. DOI PubMed
- Telang PS. (2013). Vitamin C in dermatology. Indian Dermatology Online Journal. DOI PubMed