An Introduction to NuvaRing Side Effects
As with any medicine, side effects are possible with NuvaRing®
(etonogestrel/ethinyl estradiol vaginal ring
); however, not everyone who uses the contraceptive will have problems. In fact, most people tolerate it quite well. If side effects do occur, in most cases, they are minor and either require no treatment or can easily be treated by you or your healthcare provider.
(This article covers many, but not all, of the possible side effects with NuvaRing. Your healthcare provider can discuss a more complete list of NuvaRing side effects with you.)
Common Side Effects of NuvaRing
In clinical studies for most medications, one group of people is given the actual medication, while another group is given a placebo (a "sugar pill" with no active ingredients). The side effects in both groups are carefully documented and compared. This way, it is possible to see what side effects occur, how often they appear, and how they compare to the group not taking the medicine. However, it is not possible to use a placebo in clinical trials for contraceptives, as this would lead to many unintentional pregnancies.
It is difficult to obtain much information about side effects from studies that do not use a placebo, since there is no way of knowing if any particular problem is actually a side effect of the medication. Therefore, although the following side effects were commonly reported in clinical studies of NuvaRing, it is difficult to know if they are "true" side effects or not.
These possible common NuvaRing side effects (occurring in 5 to 14 percent of women) include: