There is no benefit for women to take L-carnitine for a long period of time, and it may also cause dysfunction of the digestive system and other functions, which may affect their health. L-carnitine is also known as L-carnitine, red meat (pork, beef, lamb) is the main source of L-carnitine, the human body can also synthesize L-carnitine to meet the normal physiological functions. L-carnitine is a kind of vitamin-like substance, in the case of human body lack of moderate supplementation of L-carnitine can promote fat oxidation and decomposition, anti-fatigue and other effects. Usually, there is no lack of L-carnitine in the body under normal dietary conditions, and a few people may have L-carnitine deficiency due to specific behaviors such as fasting, vegetarianism, pregnancy, or prolonged strenuous exercise, etc. In this case, L-carnitine can be supplemented in moderation according to the doctor’s prescription. However, if women take L-carnitine for a long time, it will lead to excessive intake, which will have certain effects on the digestive system and nervous system, and damage the health. Patients should take L-carnitine under the guidance of a doctor, and should not take it by themselves, otherwise it will easily cause adverse consequences.