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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:
A number of vaginal ring products are also in development.
Methods of use
General - Vaginal rings are easily inserted and removed. Vaginal walls hold them in place. Although their exact location within the vagina is not critical for clinical efficacy, rings commonly reside next to the cervix. Rings are typically left in place during intercourse, and most couples report no interference or discomfort. In many cases, neither partner feels the presence of the ring.  Rings can be removed prior to intercourse, but in the case of the contraceptive Nuvaring only for one to three hours in order to maintain efficacy of birth control.
Vaginal ring updates
Vaginal ring technology is currently being developed for the controlled release of microbicides and vaccines for the prevention of HIV infection.
Issues have been raised about the biodegradability of the product given the recent concern about pollution and use of plastics, especially of the poly(ethylene-co-vinyl+) archetypes.
|This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Vaginal_ring". A list of authors is available in Wikipedia.|