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 Amazon.com: Doctors Best Acetyl L Carnitine 1000 mg Per Serving Acetyl L Carnitine Supplement for Men & Women, Supports Brain & Nerve Cell Function, Mental Focus, Helps Generate Cellular Energy 60 Veg Acetyl L Carnitine 500mg Health Thru Nutrition Acetyl L Carnitine VS L Carnitine: Which One Is Better? Acetyl L Carnitine, 500 mg, 200 Veg Capsules