OBJECTIVE To investigate the current situation and future trend of opioid analgesics,and to provide references for rational use of drugs.METHODS The consumption data of opioid analgesics in 39 hospitals in Chongqing during 2013-2015 were analyzed.The sales volumes,DDDs,DDC and sequence ratio were compared.RESULTS The total sales volume of opioid analgesics in 2014 increased by 12.9% compared to 2013,and in 2015 increased by 16.6% compared to 2014.During the period of 2013-2015,the drugs ranked in the top 5 ...