NEW YORK (12 August 2015)—A study published today in PLOS ONE assessed effects of the Population Council’s investigational one-year reusable contraceptive vaginal ring (CVR) on the incidence of vaginal infections and vaginal microflora. The study demonstrated that use of the CVR for up to 13 cycles presented no increased risk of infection, nor did it disrupt the balance of microbes in the vagina.
The one-year reusable CVR contains Nestorone® and ethinyl estradiol. Nestorone (NES) is an investigational progestin that has been shown in clinical studies to prevent ovulation and pregnancy. Ethinyl estradiol (EE) is an approved, marketed, synthetic version of the female hormone estrogen.