Vaginal rings for menopausal symptom relief

Drugs & Aging
Susan A Ballagh

Abstract

The vagina is an alternative delivery site of sex steroids for menopausal women. New ring technology provides continuous and consistent delivery of steroids for up to 3 months. Rings rest on the pelvic floor muscles in a nearly horizontal position and are usually imperceptible. Steroid is delivered directly into the systemic circulation which may result in less alteration of coagulation/fibrinolysis pathways as seen with transdermal hormone therapy. Fewer adverse effects are noted when progesterone is applied vaginally, possibly due to lower serum levels of metabolites such as alloprenanolone. Women often switch to a ring for the longer dosing interval but also appreciate the reduced messiness. Over 5700 healthy US women who evaluated an unmedicated ring as a drug delivery platform found it very acceptable independent of age or prior use of barrier contraceptives. Marketed rings in the US include: (i) a ring for systemic and vaginal menopausal therapy that provides average serum estradiol levels of 40.6 pg/mL for the 0.05 mg and 76 pg/mL for the 0.1 mg dose; (ii) a ring for urogenital menopausal symptoms only that minimally elevates serum estradiol, usually within the menopausal range, treating atrophic vaginitis and urethritis...Continue Reading

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