Levocarnitine is a drug that promotes fat metabolism to protect the cardiovascular system. Levocarnitine is a drug that is more commonly used in internal medicine. There are mitochondria in human cells, and the mitochondria have carnitine on their membranes. The function of this carnitine is to transport the outside blood fat to the mitochondria for burning, thus achieving the purpose of fat consumption. As long as the fat is consumed, the damage to the cardiovascular system will be reduced, thus protecting the cardiovascular system. However, for patients with uremia, they need hemodialysis treatment, and the process of hemodialysis will dialyze out the carnitine, so the cardiovascular and cerebrovascular vessels will not be protected, and then need to supplement exogenous carnitine. And the ingredient of levocarnitine is carnitine. So it has some effect for the patients on dialysis.