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Scored forOutcome alternatives
21st Century360 count • 360 servingsAvailable now$21.52$0.06 / serving4.7 · 47,905 ratings
87−5 pts from leader
#10 of 3343 ranked for nail brittlenessLeader · NeoCell, NeoCell, Grassfed Collagen Peptides + Vitamin C & Biotin, 270 Tablets — 92
Why this ranks #10 for nail brittleness
- Evidence fitEvidence is still thin for Biotin.
- Dose fitBiotin at 10000 mcg is higher than the studied 2500-5000 mcg window.
- Price / serving$0.06 per serving — low price tier for this outcome.
- AvailabilityIn stock across major retailers; 99% availability confidence.
- TrustStrong trust signals — consistently high marks from verified buyer ratings.
The numbers · Nail brittleness
87
89
93
99
10000 mcgAbove rangehigher than the studied 2500-5000 mcg window
96 mg
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