Annovera

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Annovera is a flexible vaginal ring used to prevent pregnancy. It is inserted for 21 days of each cycle and contains two hormones which are slowly released over time.

Annovera Overview

Reviewed: August 22, 2018
Updated: 

Annovera is a birth control medication used to prevent pregnancy. It is a single product containing 2 kinds of female hormones: segesterone acetate, a progestin, and ethnyl estradiol, an estrogen. Annovera works by preventing ovulation (the release of an egg from the ovaries). It also changes the lining of the uterus (womb) to prevent pregnancy from developing and changes the mucus at the cervix (opening of the uterus) to prevent sperm from entering.

This medication comes as a flexible vaginal ring and is inserted and left in place for 3 weeks. After three weeks, it is removed for a 1-week break, then the same ring is reinserted for up to 1 full year (1 year includes 13 cycles; each cycle is 28 days).

Common side effects of Annovera include headache, nausea/vomiting, and vaginal yeast infection. 

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Annovera Drug Class

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Annovera is part of the drug class:

Annovera FDA Warning

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Cigarette smoking and serious cardiovascular events

Cigarette smoking increases the risk of serious cardiovascular events from combination hormonal contraceptive (CHC) use. This risk increases with age, particularly in females >35 years, and with the number of cigarettes smoked. For this reason, CHCs should not be used by females who are >35 years and smoke.