Comparison of short term and long term effects of peroral L carnitine intake: clinical implications of elevated TMAO levels in cardiovascular complications 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. L Carnitine vs L Arginine: Understanding Their Differences and Benefit Fitness Health L Carnitine: Benefits, Side Effects, Sources, and Dosage iMuscles Nutrition