Our Nutrition


  1. It is a water soluble vitamin, and excreted in the urine. There is no real toxicity as excess is just excreted.
  2. Food sources are egg yolk, liver, and soybean. But the biotin in food is protein bound and gets released by an enzyme.
  3. We can manufacture biotin in the small intestine from healthy gut bacteria, so the only source is not technically just from food.
  4. Biotin is an essential part of our metabolism of carbohydrates, protein amino acids, and blood fats by being a cofactor.
  5. Biotin is critical to much of our protein synthesis as well as cell growth, which is why it’s an important co-factor in hair and nail growth.
  6. Biotin can actually cause lab test disorders, including thyroid testing abnormalities, so be sure to disclose to your MD if you are taking this when interpreting tests.


Suzanne Trupin, MD, Board Certified Obstetrician and Gynecologist and owner of Women's Health Practice, Hada Cosmetic Medicine, and Hatha Yoga and Fitness

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