You need to go to a regular pharmacy to buy medicine. There is a red OTC sign in the upper right corner of the outer packaging! OTC is identified as Jiangxi Zhenshiming Pharmaceutical Co., Ltd. in the upper right corner of the manual, and its production address is: 2 18 Yingbin Avenue, Linchuan District, Fuzhou City, Jiangxi Province. The Zhunzi of National Medicine Z 10880003, the red specification is 13ml, the price is (12.8 yuan/piece), the blue specification is 15ml (13.8 yuan/piece), and the pattern is beautifully printed. The unopened period of validity is 24 months.