Cellulose, magnesium stearate and silicon dioxide. Capsule consists of gelatin. DuraCarn L-Carnitine Fumarate is a superior, stable form of L-Carnitine and is 58% elemental carnitine. 862 mg of L-Carnitine Fumarate yields 500 mg elemental L-Carnitine.Suggested Use:Take 1 to 4 capsules daily, or as directed by your qualified health consultant.