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NuvaRing

Vaginal rings (also known as intravaginal rings, or V-Rings) are polymeric drug delivery devices designed to provide controlled release of drugs for intravaginal administration over extended periods of time. The ring is inserted into the vagina and provides contraception protection. Leaving the ring in for three weeks slowly releases hormones into the body, mainly vaginally administered estrogens and/or progestogens (a group of hormones including progesterone). These hormones stop ovulation and thicken the cervical mucus, creating a barrier preventing sperm from fertilizing an egg. Worn continuously for three weeks followed by a week off, each vaginal ring provides one month of birth control. Several vaginal ring products are currently available, including:

A number of vaginal ring products are also in development.


Vaginal ring sections
Intro  Methods of use   References   External links  

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