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. [1] 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.
- Femring - Femring is inserted into the vagina and left in place for three months, after which it is removed and replaced with a fresh ring.
- NuvaRing - NuvaRing is inserted into the vagina and left in place for three weeks, after which it is removed for a 'ring-free' week to allow menstruation to occur.
References
- ^ FAQs on nuvaring.com
External links
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