Orlistat capsules are a commonly used drug for the treatment of obesity, but orlistat capsules have certain side effects, mainly in the form of adverse reactions in the gastrointestinal tract, but also possible side effects such as respiratory tract infections and allergies. In addition, after taking orlistat capsules, if you do not carry out the control of diet and so on, there will also be rebound performance. The most common side effects of taking orlistat capsules for weight loss are mainly gastrointestinal adverse reactions, mostly related to the pharmacological effect of the drug to block fat absorption, commonly abdominal flatulence, increased stool frequency, steatorrhea and so on. In addition to gastrointestinal adverse reactions, some patients may also experience fatigue, upper and lower respiratory tract infections, headaches, urinary tract infections, and some women may also experience menstrual disorders and other adverse reactions. Some patients may experience allergic reactions to orlistat capsules, such as itching, rash, urticaria, angioneurotic edema, etc. Patients are advised to take the medication under the guidance of a doctor for treatment and not to use it blindly to avoid aggravating the body. In addition to side effects, there may be rebound, because everyone’s body will have a regulation point of energy metabolism, when taking orlistat capsules after weight loss to a certain level, the body will react and may make weight regain. In daily life, if patients want to lose weight, in addition to following medical advice to take orlistat capsules, but also to change the previous lifestyle, quit smoking, limit alcohol, and a light, reasonable diet, more vegetables, fruits, coarse grains, such as celery, oranges, buckwheat, corn, purple potatoes, etc., while avoiding the intake of high-sugar, high-calorie foods, such as ice cream, fried chicken, etc.. It also needs to be accompanied by moderate exercise, avoiding sedentary, lying down for a long time.