Bulk L-Carnitine is an amino acid found naturally in the body; Carnitine synthesis occurs primarily in the Liver. There are various forms of L-Carnitine available, but Bulk have opted to use an 'L-Tartrate' ester, as this is the purest format available - delivering a high quality, high dosage of 1000mg per capsule. Carnitine can be found naturally in the diet, predominately in meat and dairy products, and serves several functions including carrying fat to the mitochondria. Typically used pre-workout.