在医药研发上,美国是世界上最为发达的国家,在避孕药物剂型的研发上同样具有国际领先水平。近年来,美国FDA批准了多个避孕新剂型上市。据估计,美国有1200万人采用激素避孕作为她们主要的计划生育方法。售后临床研究表明,复方雌激素/孕激素口服制剂非常安全有效。然而,口服避孕 In medical research and development, the United States is the most developed country in the world and has the same international advanced level in the research and development of contraceptive dosage forms. In recent years, the United States FDA approved a number of new forms of contraceptive market. It is estimated that 12 million people in the United States use hormonal contraception as their primary method of family planning. After-sales clinical studies show that the compound estrogen / progestin oral preparation is very safe and effective. However, oral contraception