A phase 2b multicenter, randomized, double-blind, placebo-controlled clinical trial to evaluate the efficacy and safety of vaginal rings containing nomegestrol acetate or etonogestrel and 17p-estradiol in the treatment of women with primary dysmenorrhea

摘要

Objective: To evaluate the effect of investigational vaginal rings containing nomegestrol acetate (NOMAC) plus 17pestradiol (E2) or etonogestrel (ENG) plus E2 in women with moderate to severe primary dysmenorrhea.