Different Types of L Carnitine & How To Choose The Right One? Most people talk about carnitine like it is one supplement. It is not. Acetyl L carnitine and L carnitine L tartrate do different jobs, and picking the wrong one for the wrong goal is where people Most people talk about carnitine like it is one supplement. It is not. Acetyl L carnitine and L carnitine L tartrate do different jobs, and picking the wrong one for the wrong goal is where people Should I Take Acetyl L Carnitine or L Carnitine HealthAid L Carnitine Uses & Benefits Explained: A Complete Guide The Science of Good Health L Carnitine L Tartrate Powder