Biotin, also called Vitamin B7, is a water-soluble B vitamin involved in macronutrient metabolism. It helps the body process fats, carbohydrates and proteins and is commonly marketed in hair, skin and nail supplements.
Biotin deficiency is uncommon, but biotin supplements are popular for beauty routines. The main caution is that high-dose biotin can interfere with some blood tests, including certain thyroid and heart-related tests.
What Does Biotin Do?
- Supports normal macronutrient metabolism
- Supports normal hair and skin maintenance
- Supports normal nervous system function
- Is often included in B-complex and hair-skin-nail formulas
Recommended Merchant Options
Nutricost Biotin
Nutricost lists Biotin capsules with 10,000mcg per capsule. This is a high-dose biotin product and should be used with lab-test awareness.
Dr. Berg Hair Formula
Dr. Berg Hair Formula includes biotin with other nutrients and botanicals. This is a hair-support blend, not a plain biotin supplement.
iHerb Biotin
iHerb carries biotin tablets, capsules, gummies, B-complex formulas and hair-skin-nail blends.
Food Sources of Biotin
Biotin is found in eggs, liver, salmon, pork, nuts, seeds, sweet potato, mushrooms and legumes. Cooking egg whites helps reduce avidin, a protein that can bind biotin when raw egg whites are eaten often.
Safety and Cautions
Tell your doctor or pathology provider if you take biotin, especially high-dose products. Biotin can interfere with some blood tests and may cause misleading results.
FAQ
Does biotin grow hair?
Biotin supports normal hair maintenance, but it is most likely to help when deficiency or low intake is involved.
Is 10,000mcg biotin high?
Yes. It is much higher than ordinary daily intake levels and needs lab-test caution.
Should I stop biotin before blood tests?
Ask your doctor or pathology provider. Some tests may require stopping biotin before testing.
Final Thoughts
Biotin can be useful in hair, skin and nail routines, but high-dose products need lab-test awareness. Compare Nutricost Biotin, Dr. Berg Hair Formula or Biotin at iHerb.
Health disclaimer: This article is general information only. Tell your healthcare provider if you take biotin before blood tests, especially thyroid, hormone or heart-related tests.







