Acetyl L Carnitine Reflex Nutrition Did you know L carnitine, a vital amino acid, is naturally produced by your body and found in various foods? While acetyl L carnitine (ALCAR) can be a beneficial supplement for some, most people get Liquid L Carnitine Energy Feeling low on energy or hitting a plateau in your fitness goals? L Carnitine can help your body convert fat into fuel, supporting higher energy levels, improved endurance, and a faster metabolism. L Carnitine 500mg