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Yaz Effectiveness

Yaz® (drospirenone/ethinyl estradiol) is a prescription oral contraceptive that is approved for several different uses, including:
  • Preventing pregnancy
  • Treating symptoms of premenstrual dysphoric disorder (PMDD)
  • Treating acne in women who also desire contraception.
A large clinical trial was conducted to confirm the effectiveness of Yaz. 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 the effectiveness of Yaz for treating the symptoms of premenstrual dysphoric disorder (PMDD) and for treating acne.
(Click Yaz to learn more about the drug's effectiveness, to find out exactly how this medication works, and for information on when and how to take this birth control pill.)
Last reviewed by: Kristi Monson, PharmD
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