Olanzapine is one of the antipsychotic drugs. There are many antipsychotic drugs, and olanzapine is one of them. Olanzapine has positive effects and side effects. Since we are talking about harm, we must refer to side effects, which exist in the form of abnormal lipid metabolism, increase in blood sugar and drowsiness. For these three aspects, patients who take it for a long time will have abnormal lipid metabolism and high blood lipids. There is also patient obesity, some patients in the short term to increase, to exaggerate, see the greatest impact on weight, in a short period of time to increase 50 pounds of patients, is a very bad state. Olanzapine has a sedative and hypnotic effect, so patients taking the drug, will be significantly sleepy. Because of sleepiness, they do not want to do things during the day. Because they don’t want to do it, plus olanzapine has abnormalities in lipid metabolism, blood sugar and blood lipids, which makes a lot of changes in the body and even causes physical diseases. Therefore, when using olanzapine, or any antipsychotic drug, it is important to go to a regular hospital and regular doctor for detailed treatment.