Biotin high-potency vitamin supplements are available on iHerb.com, SuperSup.com and ProfessionalSupplementCenter.com. Biotin is commonly referred to as vitamin B-7 and is water-soluble; therefore, it must be replenished on a daily basis, according to Dr. Weil.
Biotin is responsible for aiding in many of the body's metabolic processes, including metabolizing carbohydrates and fats. Biotin acts as a co-factor in many of the body's enzyme processes as well. While B-7 deficiencies are rare, a person that is deficient in this vitamin may experience skin, intestinal tract or nervous system issues. Biotin helps maintain healthy hair and nails and can decrease insulin resistance and improve glucose tolerance.