Impact of Circular 10 on the use of domestically produced western medicines To assess the impact of Circular 10 on the use of domestically produced western medicines, this study compared the structure of the number of items and monetary values of DD and FD in Circular 10 in different time periods in 2018, 2019 compared to 2017 in 1, 010 public hospitals across the country. When we compared to the use of DD under the Circular 10 in periods of 2018 and 2019 to the year of 2017, the numbers of drug items in 2018 and 2019 were higher than in 2017 for the total number of hospital levels.