长效口服避孕药复方16-次甲基氣地孕酮(简称复方16-次甲),是天津市医药工业、卫生战线的革命职工经过两年多的努力实践,研究成功的一种女用长效口服避孕药,内含16-次甲基氯地孕酮和炔雌醇环戍醚两种成分。从1970年2月28日开始临床试用,到1971年10月底,先后共有6,641人服用,共观察了30,293个周期,服药时间最长者达24个周期,成功率按例数算达99.51%,按周期算为99.92%,按国际法算为98.96%。 Long-term oral contraceptive compound 16-methylated gas progesterone (referred to compound 16-a), is the pharmaceutical industry in Tianjin, the revolutionary workers in the health front after more than two years of hard work to study a successful woman Long-acting oral contraceptives, containing 16-methychlor chlormadinone and ethinylestradiol ring ether two components. From February 28, 1970 began clinical trials, by the end of October 1971, a total of 6,641 people took a total of 30,293 cycles observed, the longest medication for up to 24 cycles, the success rate calculated by the number of cases up to 99.51% Calculated by the period of 99.92%, according to international law as 98.96%.