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Yaz

Effects of Yaz

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.

When and How to Take It

General considerations for when and how to use Yaz include the following:
  • The medication comes in tablet form. It is taken by mouth once a day.
  • You can take Yaz with or without food. If the medication bothers your stomach, try taking it with food.
  • Each pack of Yaz contains 28 pills. Be sure to take them in order. Once you finish a pack, start a new pack right away. You will probably get your period during the last few days of the pack or, sometimes, during the first few days of the new pack.
  • It is very important to take Yaz every day and at the same time each day. Try to pick a time that will be easy to remember, such as at bedtime. If you have trouble remembering, please talk with your healthcare provider, as missing pills increases your risk of pregnancy.
  • Make sure you know exactly what to do if you miss any pills. In some circumstances, you may need to use a backup method of contraception, such as condoms, for seven days.
  • For the medication to work properly, it must be taken as prescribed. Yaz will not work if you stop taking it.

Dosing Information

There is only one standard dose of Yaz, regardless of your age, weight, or medical conditions.
As always, do not adjust your dose unless your healthcare provider specifically instructs you to do so.
(Click Yaz Dosage for more information.)
Last reviewed by: Kristi Monson, PharmD
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