Treat Male Infertility With 4 Proven Supplements That Support Sperm Health Reproductive Medicine & Infertility Associates 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 Liquid Gold: 5 Benefits of Liquid Carnitine You Can't Ignore NutraBio Brands L carnitine tartrate vs other forms of carnitine which is better Infinite Labs