Biotin

USE: Biotin is a water-soluble B-vitamin that helps you transform fat, protein and carbohydrates in your food into energy needed by the body (helps your body make efficient use of sugar and maintains an energy supply in your nerve cells). It decreases stress, anxiety, fatigue and insomnia and helps with chronic fatigue syndrome. It also supports healthy skin, 
SOURCE: Most foods contain a certain amount of Biotin. Good sources are Swiss Chard, egg yolk, almonds/walnuts and onions.