Orlistat capsules have a certain weight loss effect, generally only for the treatment of obesity and overweight people, the effect is usually slower, but also need to be combined with dietary control and appropriate exercise. Orlistat capsules belong to the prescription-type weight loss drugs, can inhibit the secretion of gastrointestinal lipase, inhibit gastric acid, prevent the synthesis of fat, discharge excess body fat, to achieve the purpose of weight loss, suitable for long-term treatment of obesity and overweight people, the onset of the effect is usually slower, and it takes a few weeks to have a more obvious effect. When taking this product should minimize the intake of food with high fat content, light diet, at the same time, should pay attention to the combination of appropriate sports and exercise, regular work and rest, to avoid excessive mental stress, in order to achieve a good effect of weight loss. The adverse reactions of this drug are mainly gastrointestinal reactions, such as abdominal pain, flatulence, soft stools, steatorrhea, and increased stool frequency. Contraindications to the drug mainly include pregnant women, patients who are allergic to orlistat or any of the components of the drug preparation. Orlistat capsules should be used regularly under the supervision of a doctor.