Biotin is a water-soluble vitamin that is required by our bodies due 
  to its involvement in carbohydrate, protein, and fat metabolism. Biotin is a 
  cofactor in a wide variety of enzymatic reactions. Biotin also helps form and 
  maintain chemical structures known as "crosslinks" within the main 
  protein found in hair and nails (keratin). Maintenance of these crosslinks helps 
  to promote hair and nail strength.
  
  
Supplement Facts for 5 mg
  Serving Size: 1 tablet 
  Amount %DV 
  Biotin 5 mg 1,670% 
  
  Other Ingredients: microcrystalline cellulose, stearic acid, and magnesium stearate.
Warning: NOTE: If you are pregnant or breastfeeding, consult your health care 
  professional before using Biotin product.
Suggested Use: One Biotin tablet daily.
Source Naturals Biotin is suitable for vegetarians and HYPOALLERGENIC: contains 
no yeast, dairy, egg, gluten, corn, soy or wheat. Contains no sugar, starch, salt, 
preservatives, or artificial color, flavor or fragrance.