Avitamin A Capsules may cause adverse reactions to the skin, mucous membranes, eyes, skeletal muscles, and other systems; however, when used in accordance with medical advice, these adverse reactions are generally controllable and cannot be described as harmful. The main and common adverse reactions to this product are hypervitaminosis A syndrome-like reactions, which are mainly characterized by: 1. Skin: itching, sensory hypersensitivity, photosensitization, erythema, dryness, scaling, onychomycosis and so on. 2. Mucous membrane: lipitis, rhinitis, dry mouth, etc. 3. Eyes: dry eyes, conjunctivitis, etc. 4. Musculoskeletal: myalgia, back pain, arthralgia, bone hyperplasia, etc. 5. Nervous system: headache, abnormal gait, increased intracranial pressure, tinnitus, earache, etc. 6. Other: fatigue, anorexia, appetite change, nausea, abdominal pain, etc. 7. Laboratory abnormalities: transient mild elevation of glutamic oxaloacetic aminotransferase, glutamic alanine aminotransferase, alkaline phosphatase, triglycerides, bilirubin, uric acid, reticulocytes, etc.; reduction of high-density lipoproteins, leukocytes, and electrolytes, such as phosphorus, potassium, etc., may also be seen. Changes may be restored with continued treatment or discontinuation of the drug. The drug is a retinoic acid derivative indicated for severe psoriasis, especially erythrodermic psoriasis and pustular psoriasis, ichthyosis, erythematous furuncle, and follicular keratosis. This drug is contraindicated for pregnant women, lactating women, people with abnormal liver and kidney functions, and people with high blood lipids. Women of childbearing age need to be aware that they should not get pregnant within two years of taking the drug. Liver function and blood lipids should also be checked regularly during the use of the drug. If you need to use the drug, please under the guidance of the doctor and pharmacist, strictly follow the instructions of the doctor to take medication, do not self-medication.