Vaginal rings (also known as intravaginal rings, or V-Rings) are 'doughnut-shaped' polymeric drug delivery devices designed to provide controlled release of drugs to the vagina over extended periods of time. Several vaginal ring products are currently available, including:

NuvaRing - Find everything you need to know about NuvaRing birth control and the benefits of vaginal administration.
Meta Description: [ Just one NuvaRing® once-a-month is 99% effective in preventing pregnancy. NuvaRing® birth control has a low incidence of side-effects such as headaches, nausea, breast tenderness, and breakthrough bleeding. ]
Vaginal Ring - Covers the use, side effects, advantages, and disadvantages of this birth control method. From the Feminist Women's Health Center.
Meta Description: [ Birth-Control-Comparison.Info provides empowering pro-choice information comparing various methods of birth control available in the United States.
Covers birth control, feminism, contraception, menstruation, family planning, HIV, emergency contraception. Your questions and answers. And persona... ]
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