Oral Orlistat may cause symptoms of dyspepsia, such as abdominal pain, abdominal discomfort, flatulence, watery stools, and soft stools, depending on the individual. Orlistat is indicated for the treatment of obese or overweight patients with a body mass index ≥ 24. It should be contraindicated in patients with hypersensitivity to the product, chronic malabsorption syndrome, cholestasis, and organic obesity; it is not recommended for those with a body mass index of 24 or less, those under 18 years of age, and women who are breastfeeding. Adverse reactions to orlistat include flatulence, watery stools, soft stools, abdominal pain, abdominal discomfort, rectal pain, dental caries, gum disease, influenza, respiratory infections, headache, menstrual disorders, anxiety, fatigue, and urinary tract infections; the specific occurrence of adverse reactions varies from person to person. The specific use of this drug should be under the guidance of a specialist, not unauthorized use of drugs.