Head-to-head
Zinc vs Vitamin C
Zinc vs vitamin C for colds: which wins?
The verdict
Zinc — slightly — if you start it within 24 hours of symptoms.
Both have modest evidence for shortening cold duration. Zinc lozenges have the stronger effect size when started early. Vitamin C works more for prevention in people under physical stress (endurance athletes).
Side by side
Pick zinc if…
ZincYou caught something and want to shorten it. Lozenges, 15–25 mg every few hours for 1–2 days at onset.
- Dose
- 15 mg
- When
- morning
Pick vitamin C if…
Vitamin CYou're a heavy endurance trainer or frequently stressed. 500 mg–1 g daily for prevention.
- Dose
- 500 mg
- When
- morning
Or take both
When you feel a cold coming on: zinc lozenges + 1 g vitamin C twice daily for 48 hours.
At a glance
| Zinc | Vitamin C | |
|---|---|---|
| Typical dose | 15 mg | 500 mg |
| Best timing | morning | morning |
| Why | Supports immune cells, wound healing, and testosterone. | Antioxidant support and immune resilience. |
| Tag | goal | goal |
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