L Carnitine: Benefits, Side Effects, FAQ, Sources, and Dosage Serum L Carnitine Levels Are Associated With First Stroke in Chinese Adults With Hypertension Stroke 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. Comparison of short term and long term effects of peroral L carnitine intake: clinical implications of elevated TMAO levels in cardiovascular complications