Revisiting the Role of Carnitine in Heart Disease Through the Lens of the Gut Microbiota LeanShots Liquid L Carnitine Shot (3000mg) NutraBio Brands 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 The Role of L Carnitine in Kidney Disease and Related Metabolic Dysfunctions The Role of l Carnitine in Mitochondria, Prevention of Metabolic Inflexibility and Disease Initiation 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.