Isotretinoin capsules are mainly used in the clinic to treat acne as well as hairy erythematous rashes, etc. Side effects such as dryness of lips and skin, conjunctivitis, thinning of hair, and rapid blood sedimentation may occur after taking the capsule, and the side effects do not discriminate between men and women. Common side effects include the following. 1. It may cause patients to develop dry lips and skin, labial inflammation, desquamation, itching, pain, rash, increased skin brittleness, palmoplantar desquamation, petechiae, and secondary infections. 2. Some patients may develop ocular symptoms of conjunctivitis, corneal clouding, visual disturbances, and optic papillae edema, as well as headache, dizziness, psychiatric symptoms, depression, and benign increased cerebral pressure. 3. A small number of patients may experience hair thinning, softening of nails, osteoporosis, muscle weakness, pain, gastrointestinal symptoms. 4. Prolonged use may cause rapid blood sedimentation, elevated liver enzymes, elevated blood lipids, elevated blood glucose, platelet drop and so on. Isotretinoin capsules are contraindicated in pregnant women, lactating women, hepatic and renal insufficiency, vitamin A overdose and hyperlipidemia patients, pay attention to avoid and vitamin A and tetracycline and other concomitant use, diabetes, obesity, alcoholism and hyperlipidemia, lipid metabolism disorders with caution. Isotretinoin capsules produced by the above side effects, mostly reversible, after stopping taking the drug, most can recover on their own. The drug should be applied under the guidance of a doctor.