Best known for its role in promoting healthy hair, skin, and nails, Biotin (also known as Vitamin B7 or Vitamin H) is a water soluble B vitamin that is thought to play a substantial part in the process of converting fats, carbohydrates, and protein into energy. Through its role in the Krebs energy cycle (how our body produces the energy molecule ATP), studies show that Biotin is a key intermediary in the regulation and synthesis of vital macronutrients that are needed for sustained energy and quick recovery.