Biotin Extra Strength 10,000 mcg — 120 Veg Capsules — Hair, Skin & Nail Support*
LifeSource Vitamins Biotin Extra Strength is a research-driven formula designed for those seeking daily support for healthy hair, skin, and nails. Backed by NIH-indexed human clinical studies and produced in FDA-registered, GMP-certified facilities, this formula uses only clean, proven ingredients customers trust.*
Research Promise: At LifeSource Vitamins, our commitment is rooted in research and results. Every benefit below is supported by human clinical studies indexed in the National Institutes of Health (NIH) via PubMed, with full texts available in the National Library of Medicine (NLM) PubMed Central (PMC) when available. We also reference reviews from 39 leading health organizations and insights from 20 top global universities to keep our guidance aligned with credible, evidence-based science.* Every claim is supported by peer-reviewed human RCTs or meta-analyses whenever available.
Clinically Studied Benefits (Human Evidence)
• Supports firmer, harder, and thicker nails in brittle nail conditions* — 91% of patients with brittle fingernails reported definite improvement in firmness and hardness (NIH/PubMed — Floersheim, 1989).
• Increases nail plate thickness in brittle nails* — Supplementation resulted in a 25% increase in nail thickness and reduced splitting (NIH/PubMed — Colombo & Floersheim, 1990).
• Improves clinical symptoms of brittle nails* — 63% of patients showed clinical improvement in brittle nail symptoms (NIH/PubMed — Hochman & Scher, 1993).
• Essential coenzyme for macronutrient metabolism* — Biotin serves as cofactor for carboxylases involved in fatty acid, glucose, and amino acid metabolism (NIH/PubMed — Pacheco-Alvarez & Zempleni, 2002).
Additional / Promising Evidence
• Potential benefits for hair and nail changes in specific underlying conditions* — Review found clinical improvements primarily in cases with pathologies or deficiencies affecting hair/nails (NIH/PubMed — Patel & Swink, 2017).
• Support for nail health in broader contexts* — Evidence summary notes positive outcomes from small studies on brittle nails, with calls for larger trials (NIH/PubMed — Lipner & Scher, 2018).
University / Academic Context
• University of Nebraska (USA) — Pioneering research on biotin metabolism, carboxylase functions, and roles in health (Zempleni Group, 2000s–present).
• Various Global Institutions — Ongoing studies into biotin’s mechanistic effects on keratin and cellular processes.
Global Evidence & Authoritative Reviews
Note: These bullets follow the no-duration rule and highlight guidelines, consensus, and mechanistic context — not time.
• NIH Office of Dietary Supplements — Biotin essential for carboxylase enzymes; some evidence from small clinical studies supports benefits for brittle nails.
• European Food Safety Authority (EFSA) — Approved health claims for biotin’s contribution to normal macronutrient metabolism and maintenance of hair and skin.
We monitor research from leading institutions — Harvard, Johns Hopkins, Mayo Clinic, Cleveland Clinic, Cambridge, Oxford, Stanford, Yale, Tufts, University of Florida, Oregon State University – Linus Pauling Institute, Columbia, Cornell, Ohio State — to align with credible science.*
Key Ingredients
- • Biotin (Vitamin B7) — Supports keratin infrastructure and essential metabolic pathways*
Brief Benefit Bullets
- • Supports healthy nails, particularly in brittleness*
- • Essential for normal energy and macronutrient metabolism*
- • Contributes to maintenance of healthy hair and skin*
Suggested Use
As a dietary supplement, adults take one vegetable capsule daily with a meal, or as directed by your healthcare professional. If you have upcoming lab tests, inform your provider about biotin use due to potential interference.*
Product Specifications
120 Vegetarian Capsules | Non-GMO | Vegetarian
3rd Party Testing: Every LifeSource Vitamins product is tested by independent labs to verify identity, purity, potency, and label accuracy.
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LifeSource Vitamins — Proudly American — Since 1992
*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease. Always consult your physician before taking any supplements.
Biotin Extra Strength 10,000 mcg 120 Veg Capsules — supports healthy hair, skin & nails. Clinically Studied Ingredients — NIH/PubMed!*
