Understanding the Benefits and Uses of Carnitine in Health and Fitness Fitness Health L Carnitine The Right Way to Take L Carnitine to Boost Your Training L Carnitine: Benefits, side effects, and dosage Acetyl L carnitine in chronic pain: A narrative review ScienceDirect If you are like a lot of people, you may have never heard of carnitine but this important nutrient is critical for our body's ability to optimally burn fat required for energy.