Biotin (Vitamin B7) 5,000 mcg — Hair, Skin & Nail Support*
LifeSource Vitamins Biotin 5,000 mcg provides high-potency vitamin B7 to support healthy keratin infrastructure for nails, hair, and skin, and to assist normal macronutrient metabolism as a coenzyme for key carboxylases. Biotin supports energy production from fats, carbohydrates, and proteins, and promotes overall cellular health in those with increased needs.* Produced in GMP facilities and 3rd-party lab tested for identity, potency, and purity by LifeSource Vitamins.
Research-Driven & Verified Product.
Explore the clinical research, ingredient science, and global evidence supporting this product below.
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. In addition, we reference reviews from 39 leading health organizations and insights from 20 top global universities to ensure our guidance aligns with credible, evidence-based science.*
Clinically Studied Benefits
✓ Supports nail brittleness and strength* — Clinical observations reported improvement in brittle nail symptoms with daily biotin; classic reports noted increased nail plate thickness.*
NIH/PubMed — Hochman L, 1993
✓ Promotes improved nail microstructure* — Improvements in onychoschizia and nail ultrastructure after biotin supplementation in clinical microscopy studies.*
NIH/PubMed — Colombo V, 1990
✓ Functions as essential coenzyme for energy metabolism* — Biotin is a coenzyme for acetyl-CoA carboxylase, pyruvate carboxylase, propionyl-CoA carboxylase, and methylcrotonyl-CoA carboxylase, supporting normal macronutrient metabolism.*
NIH/PMC — Zempleni J, 2009
Additional / Promising Evidence
✓ May support hair and skin in deficiency or special conditions* — Reviews note improvement reports largely in deficiency states or underlying disorders; robust trials in healthy adults are limited.*
NIH/PMC — Patel D, 2017
✓ Contributes to early clinical series on nail brittleness* — Additional small clinical report on brittle nails with biotin supplementation.*
NIH/PubMed — Floersheim G, 1989
✓ Supports gene regulation and metabolism context* — Biotin participates in carboxylase-dependent pathways and transcriptional regulation.*
NIH/PubMed — Rodriguez-Melendez R, 2003
University / Academic Context
✓ Supports biotin biology overview* — Comprehensive academic review of human biotin metabolism, biomarkers, and functions.*
NIH/PMC — Zempleni J, 2009
✓ Contributes to biotin deficiency and biotinidase deficiency context* — Clinical features and management (relevant to cases where biotin shows clear benefit).*
NIH/PubMed — Zempleni J, 2008
Global Evidence & Reviews
✓ Confirms NIH ODS Fact Sheet evidence summary* — Notes nail data are from small, uncontrolled studies; outlines Adequate Intake and safety considerations.*
NIH/ODS — Biotin Fact Sheet, 2022
✓ Supports laboratory test interference awareness (safety)* — High-dose biotin can interfere with certain immunoassays (e.g., thyroid, troponin); FDA safety communication and clinical reviews.*
FDA — 2019
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
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Biotin (Vitamin B7)* — 5,000 mcg — Essential coenzyme supporting keratin structure for nails, hair, and skin, and normal macronutrient metabolism.*
Brief Benefit Bullets
- Supports healthy keratin for nails*
- Helps maintain hair & skin in those with increased needs*
- Essential coenzyme for normal macronutrient metabolism*
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3rd-party lab tested for identity, potency & purity
Suggested Use
See product label for full instructions, or as directed by your healthcare professional. If you have upcoming lab tests, tell your provider you use biotin due to potential test interference.* Do not exceed recommended dose. If pregnant, nursing, taking medications, or have a medical condition, consult your physician.*
Product Specifications
- Serving Size — 1 Veg Capsule
- Servings Per Container — 60
- Biotin — 5 mg (5,000 mcg) — 16,667% DV*
- Other Ingredients — Rice Flour; Hypromellose (cellulose capsule); Stearic Acid (vegetable source); Silicon Dioxide
- Form — Vegetarian Capsules
- Free From — Non-GMO; not manufactured with common allergens*
- Quality — Third-party tested for identity, potency & purity
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.
Biotin (Vitamin B7) 5,000 mcg — supports nails, hair & skin in those with increased needs; essential coenzyme for metabolism. Non-GMO, 3rd-party tested. NIH/PubMed-anchored references!*
