Seasonale and Pregnancy

If you are taking Seasonale and pregnancy occurs, serious problems such as miscarriages or birth defects may result. Because of these risks, the FDA has classified Seasonale as a pregnancy Category X medication, meaning you should not intentionally take it when you are pregnant. However, if you accidentally take Seasonale before you realize you are pregnant, it shouldn't cause any problems.

Seasonale and Pregnancy: An Overview

Seasonale® (levonorgestrel/ethinyl estradiol) is a prescription birth control pill, also known as an oral contraceptive. As with all oral contraceptives, Seasonale should not intentionally be used during pregnancy. Because you will only have your period once every three months while taking the drug, you will not be able to rely on a monthly period for reassurance that you are not pregnant.
(Daysee, Introvale, Jolessa, and Quasense birth control pills are generic versions of Seasonale. The information in this article applies to these generic medications as well.)

Seasonale and Pregnancy Category X

The U.S. Food and Drug Administration (FDA) uses a category system to classify the possible risks to a fetus when a specific medicine is taken during pregnancy. Pregnancy Category X is given to medications that should not be used during pregnancy, usually due to the serious problems that could potentially occur, such as birth defects or miscarriages.
Even though Seasonale is a pregnancy Category X medication, it is not likely to cause any problems if accidentally used during early pregnancy. Many studies have shown that there is no increased risk of birth defects when birth control pills are accidentally taken during early pregnancy.
Because you will only have your period four times a year while taking Seasonale, make sure you are not pregnant any time you miss your period, or if you have any other reason to suspect that you may be pregnant. Do not wait until you have missed two periods, as is often recommended with traditional birth control pills, since this will be several months away. You can be reassured that if you take Seasonale correctly (without missing any pills), the risk of pregnancy is quite low.

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Last reviewed by: Kristi Monson, PharmD
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