Journal
JOURNAL OF PHARMACY AND PHARMACEUTICAL SCIENCES
Volume 12, Issue 3, Pages 312-336Publisher
CANADIAN SOC PHARMACEUTICAL SCIENCES
DOI: 10.18433/J3HP41
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The vagina has been studied as a suitable site for local and systemic delivery of drugs. There are a large number of vaginal medications on the market. Most of them, however, require frequent applications due to their short vaginal residence time. A prolonged vaginal residence time of formulations is therefore a key parameter for improved therapeutic efficacy. Promising approaches for prolonging the residence time base on mucoadhesion, were in- situ sol-to-gel transition and mechanical fixation. Mucoadhesive drug delivery systems can be tailored to adhere to the vaginal tissue. In-situ gelling systems offer the advantage of increased viscosity in vaginal cavity and consequently reduce outflow from the vagina. Mechanical fixation needs specially shaped drug delivery systems and reduce the frequency of administration significantly. In this review, an overview on these different strategies and systems is provided. Furthermore, the techniques to evaluate the potential of these systems for prolonged vaginal residence time are described.
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