Sanlitong is a compound preparation containing acetaminophen, ipratropium and caffeine. Among them, ipratropium is also an antipyretic and analgesic drug, which assists the antipyretic and analgesic effects of acetaminophen, and caffeine can enhance the analgesic effect. Function and use: Suitable for headache, toothache, neuralgia, menstrual pain, muscle pain, rheumatic pain, fever, etc. But it is not easy for preschool children. Acetaminophen sustained-release tablets is a unilateral preparation. Due to the preparation of sustained-release dosage form, the drug is slowly released in the body, which is beneficial to steadily lowering body temperature and relieving pain. Acetaminophen sustained-release tablets are used for fever caused by common cold or flu, and also for relieving mild to moderate pain, such as headache, joint pain, migraine, toothache, muscle pain, neuralgia and dysmenorrhea. However, children under 12 should not take it. Acetaminophen itself is a relatively safe antipyretic and analgesic drug, but neither compound preparation nor sustained-release preparation is suitable for children. Children should take a single acetaminophen solution, acetaminophen drops or acetaminophen tablets.