The most important hazards of levocarnitine are transient nausea and vomiting, in addition to chest pain, headache, high blood pressure, low blood pressure, tachycardia, anemia, etc. The probability of occurrence of the above mentioned adverse effects is very low. L-carnitine, also called vitamin BT or levocarnitine, is a carrier of fat into the mitochondria in lipolysis. The drug is mainly used for the treatment of levocarnitine deficiency in patients with chronic renal failure on long-term hemodialysis, but also for the treatment of digestive dysfunction. The most common side effects are transient GI symptoms such as nausea and vomiting. In addition to this there may be chest pain, headache, cold symptoms, hypertension, hypotension, tachycardia in the cardiovascular system and anemia in the hemolymphatic system. Hyperkalemia, hypercalcemia, and increased blood volume may also occur, but the adverse effects mentioned above are relatively rare. L-carnitine needs to be applied under medical supervision.