Paracetamol, the trade names are Baifuning, Bilitong, Tylenol, acetaminophen, etc. The international non-proprietary drug name of this product is Paracetamol. It is the most commonly used non-anti-inflammatory and antipyretic analgesic. Its antipyretic effect is similar to that of aspirin, but its analgesic effect is weaker. It has no anti-inflammatory and anti-rheumatic effect. It is especially suitable for patients who cannot use carboxylic acid drugs. For colds, toothache embolism. Acetaminophen is also an intermediate in organic synthesis, a stabilizer for hydrogen peroxide, and a photographic chemical. Chinese alias: paracetamol, acetaminophen, paracetamol, antipyretic net, acetaminophen, paracetamol, somiton, acetaminophen, diacetolol. English name: 4-Acetamido phenol, paracetamol or acetaminophen. English aliases: Acetamino phen, 4-Hydroxyacetanilide, APAP, p-Hydroxyacetanilide, Paracetamol (Acetaminophen). Pharmacodynamics This product is an acetanilide antipyretic analgesic. By inhibiting cyclooxygenase, it selectively inhibits the synthesis of prostaglandins in the hypothalamus thermoregulatory center, resulting in peripheral vasodilation and sweating to achieve antipyretic effects. Its antipyretic effect is similar to aspirin; by inhibiting the synthesis of prostaglandins and other It is a peripheral analgesic, its effect is weaker than that of aspirin, and it is only effective for mild and moderate pain. This product has no obvious anti-inflammatory effect.