Yaz Medication Information

Yaz® (drospirenone/ethinyl estradiol) is a prescription medication used for preventing pregnancy. Information about this particular birth control pill should be reviewed with your healthcare provider prior to use in order to help ensure its safety and effectiveness.
Yaz is different from traditional birth control pills in an important way. The progesterone that it uses (drospirenone) is closely related to spironolactone, a medication used as a diuretic ("water pill"). Drospirenone has anti-androgenic activity, which means that it works against testosterone and other "male" hormones.
All women have a small amount of these hormones, which can cause acne and other problems. Also, drospirenone may increase the level of potassium in your blood, which can be a problem for some women.
Yaz was shown to be an effective birth control method in a large clinical trial. In this study, for every 100 women who used the drug for a year, one or two became pregnant. This is very effective, compared to many other methods of contraception.
For instance, up to 14 percent of women using condoms for a year will become pregnant. Studies have also shown that Yaz is effective for treating the symptoms of premenstrual dysphoric disorder (PMDD) and for treating acne.
(Click Yaz for more information about the prescription medication Yaz, including details on how it works to prevent pregnancy, when and how to take the pill, and what side effects may occur.)
Last reviewed by: Kristi Monson, PharmD
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