Pure Biotin (Vitamin B7)
Hair, skin & energyFunction & benefits
A water-soluble vitamin that is a coenzyme for five carboxylase enzymes; biotin contributes to normal macronutrient and energy-yielding metabolism and the maintenance of normal hair, skin and mucous membranes (EFSA-authorised claims).
Dosage & how to use
| Recommended dose | 100–1000 µg daily (dietary requirement 40 µg; 2500–5000 µg is used by people with brittle nails and hair) |
| Best time to take | With breakfast |
| Frequency | Once daily |
Best forms to choose
Natural D-biotin, the only form with full biological activity.
Important warnings
Lab test warning (FDA): high doses (above 1000 µg) interfere with immunoassays and cause false results in thyroid and cardiac troponin tests
Stop biotin 48–72 hours before any blood test and tell your doctor and the lab
It mainly helps hair and nails when there is a deficiency
Drug interactions
Long-term epilepsy drugs (carbamazepine, phenytoin) lower biotin levels, and prolonged antibiotics reduce its production by gut bacteria.
Related supplements
- Daily MultivitaminsGeneral health & immunity
- Omega-3 Fish OilGeneral & heart health
- Vitamin D3 (Cholecalciferol)General health & bones
- Magnesium (Glycinate/Citrate)General health & nerves
Scientific references
- EFSA Journal 2009;7(10):1209 (biotin health claims)
- US FDA Safety Communication: Biotin (Vitamin B7) interference with lab tests
- NIH Office of Dietary Supplements (ODS): Biotin Fact Sheet
Content last updated: 17 October 2026 · Based on published sources and research (EFSA / NIH / PubMed)
⚖️ Medical disclaimer: The information and data provided here are for health education and nutritional guidance only. They are not a medical diagnosis and never replace a direct consultation with your doctor or pharmacist. Always consult your doctor before starting any supplement, especially during pregnancy or breastfeeding or when taking long-term medication.