An Introduction to Cyclessa Side Effects
As with any medicine, side effects are possible with Cyclessa®
(desogestrel/ethinyl estradiol); however, not every woman who uses the contraceptive will experience side effects. In fact, most women 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 Cyclessa. Your healthcare provider can discuss a more complete list of Cyclessa side effects with you. Cyclessa is equivalent to Caziant™, Cesia™, and Velivet™ birth control pills. The information in this article also applies to each of these medications.)
Birth Control Pills and Clinical Trials
In the United States, medications must be shown to be safe and effective in clinical studies before they are approved. 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). Typically, the people in the studies do not know if they are taking the real medication or the placebo.
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 if they are actual side effects of the medication. However, it is not usually possible to use a placebo in clinical trials for contraceptives, as this would lead to many unintentional pregnancies.