Natrol Biotin 5000mcg 90'S: Biotin, B vitamin also known as vitamin H or Vitamin B7, is an important nutrient to promote healthy hair, skin and nails also to help convert food into energy.it is a best choice to those that suffer from biotin deffiency, which lead to hair loss and brittle nails. Benefit: Promotes healthy hair, radiant skin and stronger nails. support energy metabolism and aids in the conversion of food to energy. Cautions and warnings: Consult your healthcare professional prior to USAe if you have a medical condition, are taking prescription drugs, or are pregnant or lactating. Individual results may vary. Made In: USA