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Scored forOutcome alternatives
Natural Factors60 count • 30 servingsAvailable now$18.87$0.63 / serving4.7 · 1,161 ratings13 / day
83−8 pts from leader
#58 of 3136 ranked for joint functionLeader · 21st Century, 21st Century, Arthri-Flex Advantage® + Vitamin D3, 120 Coated Tablets — 91
Why this ranks #58 for joint function
- Evidence fitGlucosamine Sulfate leads the evidence here, backed by Eggshell Membrane.
- Dose fit1 of 2 dosed ingredients land in the studied range. Glucosamine Sulfate at 1500 mg lands inside the studied 1500-1500 mg window.
- Price / serving$0.63 per serving — high price tier for this outcome.
- AvailabilityIn stock across major retailers; 99% availability confidence.
- TrustSolid trust signals from buyer ratings, with room to grow.
Trade-offsValue for money trails the rest of this listTrust signals sit below the other picks
The numbers · Joint functionWhat's inside
83
89
90
98
1500 mgIn rangeinside the studied 1500-1500 mg window
1000 mgAbove rangehigher than the studied 300-500 mg window
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