l carnitine: Nutrition, pathology, and health benefits ScienceDirect L Carnitine: Benefits, Side Effects, And Dosage, Per Dietitians The effect of l carnitine supplementation on mortality and clinical outcomes in ventilator dependent critically ill patients with obesity and COVID 19: Protocol for a randomized double blind placebo controlled trial ScienceDirect L carnitine tartrate supplementation in the fight against infectious disease Carnitine: the claims and why it may not work 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.