L-carnitine is a chemical that is made in the human brain, liver, and kidneys. It helps the body turn fat into energy. L-carnitine is important for heart and brain function, muscle movement, and many other body processes.
L-carnitine can be absorbed quickly into the body, especially when it's consumed in liquid form, the best time to take is in the morning and/or prior to workouts. It is recommended that you take between 2-4g of L-carnitine per day, divided into two or three evenly split dosages.