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Scored forOutcome alternatives
Irwin Naturals80 count • 16 servingsAvailable now$22.49$1.41 / serving4.7 · 1,269 ratings
81−11 pts from leader
#220 of 3343 ranked for nail brittlenessLeader · NeoCell, NeoCell, Grassfed Collagen Peptides + Vitamin C & Biotin, 270 Tablets — 92
Why this ranks #220 for nail brittleness
- Evidence fitEvidence is still thin for Biotin and Hydrolyzed Collagen.
- Dose fit1 of 2 dosed ingredients land in the studied range. Biotin at 2500 mcg lands inside the studied 2500-5000 mcg window.
- Price / serving$1.41 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.
The numbers · Nail brittleness
81
92
55
93
2500 mcgIn rangeinside the studied 2500-5000 mcg window
2000 mgBelow rangebelow the studied 2500-5000 mg window
200 mg
15 mg
1500 mg
30 mg
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