片剂:每片含诺孕酯0 ﹒ 25mg,炔雌醇0.035mg。三相片:开始6天,其后5天和11天每片诺孕酯的含量分别为0.18mg,0.125mg和0.28mg,炔雌酮的含量为0.035mg不变。口服:诺孕酯片,从月经第5天开始,1片/日,连服21天。