在人的一生中,或多或少都曾经用过止痛药。疼痛是人们生活中经常遭遇的症状,如关节痛、肌肉痛、头痛、牙痛、腰痛……人们到医院看病时,有时会以“痛不欲生”来形容自己对疼痛的感觉。自从1898年阿司匹林首次合成以来,100多年间有数十种、数百个品牌的止痛药问世。止痛药使人们 Painkillers have been used more or less throughout one’s entire life. Pain is often encountered in people’s life symptoms, such as joint pain, muscle pain, headache, toothache, back pain ... ... people to the hospital for medical treatment, sometimes “painful” to describe their feelings of pain. Since the first synthesis of aspirin in 1898, dozens and hundreds of brands of pain killers have been available for over 100 years. Painkillers make people