Biotin Vitamin B-7 Powder is one of the members of the B-Complex and is essential for proper bodily function. Biotin is also known as Vitamin H and is a coenzyme that is required to metabolize certain substances, such as amino acids and glucose. This form of Vitamin B-7 is water-soluble and may may be found naturally in foods such as avocado, cheese, cauliflower and egg yolks. Vitamin B-7 has also been found to be helpful for the hair, nails, skin and blood. This ingredient may be added to foods and beverages or smoothies and green drinks. It is a white to off-white powder and has no fillers, additives or preservatives.