但是，右丙氧芬是一种常用的止痛药物。
右丙氧芬的使用安全性低、过量风险高。[{'character': '右', 'pinyin': 'iou4', 'highest pitch': 10.62, 'lowest pitch': 8.19, 'duration': 0.23, 'prosody hierarchy': 'null'}, {'character': '丙', 'pinyin': 'bing2', 'highest pitch': 10.3, 'lowest pitch': 8.29, 'duration': 0.19, 'prosody hierarchy': '#1'}, {'character': '氧', 'pinyin': 'iang3', 'highest pitch': 10.3, 'lowest pitch': 5.8, 'duration': 0.22, 'prosody hierarchy': 'null'}, {'character': '芬', 'pinyin': 'fen1', 'highest pitch': 11.09, 'lowest pitch': 6.39, 'duration': 0.21, 'prosody hierarchy': 'null'}, {'character': '的', 'pinyin': 'de5', 'highest pitch': 11.21, 'lowest pitch': 9.46, 'duration': 0.1, 'prosody hierarchy': '#1'}, {'character': '使', 'pinyin': 'shiii3', 'highest pitch': 9.46, 'lowest pitch': 5.88, 'duration': 0.22, 'prosody hierarchy': 'null'}, {'character': '用', 'pinyin': 'iong4', 'highest pitch': 6.78, 'lowest pitch': 6.27, 'duration': 0.19, 'prosody hierarchy': '#2'}, {'character': '安', 'pinyin': 'an1', 'highest pitch': 8.71, 'lowest pitch': 7.83, 'duration': 0.21, 'prosody hierarchy': 'null'}, {'character': '全', 'pinyin': 'qvan2', 'highest pitch': 8.71, 'lowest pitch': 6.39, 'duration': 0.18, 'prosody hierarchy': 'null'}, {'character': '性', 'pinyin': 'xing4', 'highest pitch': 7.91, 'lowest pitch': 6.62, 'duration': 0.21, 'prosody hierarchy': 'null'}, {'character': '低', 'pinyin': 'di1', 'highest pitch': 10.02, 'lowest pitch': 7.03, 'duration': 0.24, 'prosody hierarchy': '#3'}, {'pinyin': 'sp1', 'highest pitch': 0.0, 'lowest pitch': 0.0, 'duration': 0.11}, {'character': '过', 'pinyin': 'guo4', 'highest pitch': 10.54, 'lowest pitch': 9.39, 'duration': 0.18, 'prosody hierarchy': 'null'}, {'character': '量', 'pinyin': 'liang4', 'highest pitch': 9.39, 'lowest pitch': 8.03, 'duration': 0.23, 'prosody hierarchy': '#2'}, {'character': '风', 'pinyin': 'feng1', 'highest pitch': 10.57, 'lowest pitch': 8.03, 'duration': 0.21, 'prosody hierarchy': 'null'}, {'character': '险', 'pinyin': 'xian3', 'highest pitch': 5.65, 'lowest pitch': 3.98, 'duration': 0.2, 'prosody hierarchy': 'null'}, {'character': '高', 'pinyin': 'gao1', 'highest pitch': 9.29, 'lowest pitch': 7.02, 'duration': 0.32, 'prosody hierarchy': '#4'}]