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Scored forOutcome alternatives
Natural Factors90 count • 90 servingsAvailable now$8.79$0.10 / serving4.7 · 2,171 ratings6 / day
85−2 pts from leader
#3 of 5986 ranked for respiratory infection incidenceLeader · Micro Ingredients, Micro Ingredients, Vitamin D3 + K2, 300 Softgels — 87
Why this ranks #3 for respiratory infection incidence
- Evidence fitVitamin D3 (Cholecalciferol) is the strongest evidence signal for this outcome.
- Dose fitDose-range data is not available for this formula yet.
- Price / serving$0.10 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.
Trade-offsDose fit is the weak spot on this listPopularity trails the other picks here
The numbers · Respiratory infection incidenceWhat's inside
85
89
54
99
10 mcg
1100 mgThin evidenceevidence for this ingredient is still thin
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