Carnitine: the claims and why it may not work 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 Benefits, Side Effects & Dosage SelfDecode Supplements L Carnitine Benefits, Dosage, Uses & Side Effects L Carnitine: Benefits & Supplementation Integrated Mobile Health 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.