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Why this ranks #4 for respiratory infection incidence
- Evidence fitVitamin D3 (Cholecalciferol) is the strongest evidence signal for this outcome.
- Dose fitVitamin D3 (Cholecalciferol) at 5000 IU is higher than the studied 400-4000 IU window.
- Price / serving$0.12 per serving — low price tier for this outcome.
- AvailabilityIn stock across major retailers; 99% availability confidence.
- TrustSolid trust signals from buyer ratings, with room to grow.
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