Cheap protein = expensive gut problems. Here's what to look for on the label before you buy 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 L carnitine reduces ammonia levels and alleviates covert encephalopathy: A randomized trial GLP 1 with L Carnitine, B12, and B6 Reduce Nausea and Fatigue Amazon.com: Force Factor L Carnitine Liquid 3000mg, Maximum Strength Supplement to Support Fat Metabolism, Cellular Energy & Muscle Recovery, High Absorbing, Non GMO, Orange Flavor, 16 oz Bottle : Health & Household