Biotin is also known as vitamin H and vitamin B7. It is a water-soluble vitamin. Biotin deficiency can cause hair thinning and loss; skin rashes around the eyes, nose, mouth, and anal area; styes; high acid levels in the blood and urine; seizures; skin infections; brittle nails; and nervous system disorders. Ingredients Bulking Agent(Microcrystalline Cellulose), Bulking Agent(Magnesium Stearate), Anti-caking Agent(Silicon Dioxide), Vitamin H(Biotin) How to use Take one tablet daily with one of your main meals.