Malic Acid

Malic acid is a chemical found in certain fruits and wines and is used mostly for dry mouth. 

However Malic Acid is often supplemented for fibromyalgia and fatigue. Malic acid may also be used to boost sports performance when taken in supplement form. It is sometimes combined with creatine supplements in order to improve the body's absorption of creatine, and may promote energy production, increase exercise endurance, and help fight off muscle fatigue.