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Seasonique is an extended-cycle birth control pill, which means that you will get your period once every three months. It comes in tablet form and is taken at the same time every day. There is only one standard dose of Seasonique, regardless of age, weight, or medical conditions. Although most women tolerate it well, side effects can occur, such as headaches, nausea, and vomiting.

What Is Seasonique?

Seasonique™ (levonorgestrel/ethinyl estradiol) is an oral contraceptive (birth control pill). It is an "extended-cycle" oral contraceptive, which means that it provides more time between menstrual periods. With Seasonique, you will get your period once every three months (four times a year).
(Click Seasonique Uses for more information, including possible off-label uses.)

Who Makes Seasonique?

It is made by Duramed Pharmaceuticals, Inc., for Teva Pharmaceuticals USA.

How Does It Work?

Seasonique is a combined oral contraceptive, a birth control pill that contains both an estrogen (ethinyl estradiol) and a progestin (levonorgestrel). It works to prevent pregnancy primarily by stopping ovulation (the maturation and release of eggs from the ovaries). However, it also prevents pregnancy in two other, minor ways. Seasonique alters the cervical mucus (the fluid of the cervix, which is the lower, narrow part of the uterus that is connected to the vagina), making it more difficult for sperm to enter the uterus. Also, Seasonique alters the lining of the uterus (called the endometrium), making it less receptive to an embryo.
There is no reason women need to have a monthly period while taking birth control pills. In fact, the "period" you experience while taking birth control pills isn't really a period at all. Because ovulation does not occur while taking a birth control pill, the body does not prepare for a possible pregnancy by building up the lining of the uterus. Therefore, there is no need to shed the lining (as with a regular period). Instead, the "period" that occurs due to birth control pills is actually caused by a withdrawal of the hormones in the pills, which causes bleeding.
Written by/reviewed by:
Last reviewed by: Kristi Monson, PharmD;
Last updated/reviewed:
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