DR P. MARAZZI / SCIENCE PHOTO LIBRARY DR P. MARAZZI / SCIENCE PHOTO LIBRARY
Editorial Use Only.
Estradiol vaginal ring. Person holding a box containing an estradiol vaginal ring, marketed under the name Estring. Vaginal rings are drug delivery devices designed to provide controlled release of drugs inside the vagina. Estring contains the hormone estradiol and is used to treat vaginal atrophy (atrophic vaginitis) - inflammation of the vagina (vaginitis) due to the thinning and shrinking of the tissues.
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