Does L Carnitine Cause Heart Problems? Arrhythmia Linus Pauling Institute Oregon State University Effects of levocarnitine on cardiac function, urinary albumin, hs CRP, BNP, and troponin in patients with coronary heart disease and heart failure ScienceDirect L Carnitine Benefits, Uses, Dosage, Foods, Side Effects Dr. Axe Exome sequencing identifies primary carnitine deficiency in a family with cardiomyopathy and sudden death European Journal of Human Genetics 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.