Biotin (Vitamin B7)

Research: 3/6Safety: 5/5$7/month

A water-soluble B vitamin that serves as a cofactor for carboxylase enzymes involved in fatty acid synthesis, gluconeogenesis, and amino acid metabolism, commonly supplemented for hair and nail health.

Also known as: Vitamin B7, Vitamin H, D-Biotin

Evidence Scores

Research Quality3/6 — Small Pilot Studies

Safety5/5 — Proven Safe / Dietary Staple

Trust Index: 10/10Transparency Score

Purely Educational: Zero commission. Zero bias. Zero excuses.

100% Neutral— No affiliate links. We make $0 from this recommendation.

Recommended Dose

2.5-5mg/day (2500-5000mcg/day) for hair/nail use

Health Outcome Impact

Hair & Nail Health2/5

Skin Health1/5

Blood Sugar Control2/5

Where to Buy

Monthly Cost:$7

Best value link coming soon

Research References

[1] www.frontiersin.org [2] pmc.ncbi.nlm.nih.gov [3] www.webmd.com

Research last reviewed: 2026-04-01

Stacks

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