Jamieson Extra Strength Biotin 5,000 mcg Softgels, Easy to Swallow, Supports Thicker Hair, Healthier Skin, and Stronger Nails. Gluten-Free, No Artificial Flavours, Colours, or Preservatives, 60 Count, Proudly CanadianJamieson Biotin 5,000 mcg is an extra strength formula providing you with 10,000 mcg of vitamin B7 per softgel. provides you with 1,000 mcg of vitamin B7 in an easy to swallow tablet. Biotin is a natural beauty nutrient that helps to support the maintenance of thicker hair, stronger nails and healthier skin with continued use. The extra strength formula is ideal for people seeking a high level of natural hair, skin, and nail health support.