Country Life, Biotin High Potency, 5 Mg, 120 Veg CapsProduct Description Biotin is a water soluble B Vitamin that supports the formation of keratin, a building block for skin, hair and nails. ** Biotin also supports energy metabolism. ** Product Benefits A Vitamin Supplement for Healthy. Dietary Supplement . Ingredients Supplement Facts Serving Size: 1 Capsule Amount Per Serving % Daily Value Biotin (as d Biotin) 5,000 mcg (5 mg) 1,667% Other Ingredients: Cellulose (capsule shell), cellulose, silica.