Antioxidant and immune support

Vitamin C

Evidence is strongest for deficiency correction; in replete adults, routine supplementation has little effect on incidence but may modestly reduce cold duration and severity.

Evidence Level A

Evidence and Risk Labels

Evidence A/B/C reflects research maturity, and risk levels reflect monitoring needs. These labels support comparison, not diagnosis or treatment decisions.

See full scoring guide

Clinical Snapshot

Effect Size
High in deficiency correction; modest reduction in respiratory-illness duration in selected settings
Safety
Low Risk

High doses can increase GI side effects and may raise stone risk in susceptible individuals.

Research Dosing

This reflects common ranges and protocols used in published studies, not personal medical advice.

Typical Daily Dose
250-1000 mg
Timing
With meals, divided at higher doses
Protocol Duration in Studies
Ongoing with periodic need reassessment

Dose should match dietary intake gaps and individual tolerance.

Best Fit Profiles

  • dietary insufficiency correction and recovery protocols

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