L-carnitine vanilla flavor is a great supplement. In my experience, I take it after you workout and pre-workout for best results. This particular flavor is my favorite for some reason there are a few stores with apple flavor and some other concoction but for me this is really the best tasting one.
L-carnitine is an amino acid (a building block for proteins) that is naturally produced in the body. L-carnitine helps the body produce energy. It is important for heart and brain function, muscle movement, and many other body processes.