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Preparation and Evaluation of $PGE_1$ Urethral Suppositories  

Park Somin (College of Pharmacy, Ewha Womans University)
Choi Myeongsin (College of Pharmacy, Ewha Womans University)
Han Kyuwon (College of Pharmacy, Ewha Womans University)
Kim Kil-Soo (College of Pharmacy, Ewha Womans University)
Publication Information
YAKHAK HOEJI / v.49, no.4, 2005 , pp. 260-267 More about this Journal
Abstract
[ $PGE_1$ ] is an endogenous substance of potent vasodialator as well as inhibitor of platelet aggregation. It has been used therapeutically in peripheral arterial occlusive disease and impotence. Intracavernous injection of $PGE_1$ for erectile dysfunction has been established for several years as a treatment option for erectile dysfunction of diverse etiologies, but this mode of administration is limited by penile discomfort, pain at the injection site, inconvenience and noncompliance. As the matter of worse, the $\beta-hydroxy$ moiety of $PGE_1$ is extremely susceptible to dehydration in solution to give inactive $PGA_1$ and $PGB_1$. For the improvement of stability, rapid absorption at action site and the convenience of application, $PGE_1$ was formulated as urethral suppositories of three types of formulations, such as PEG, witepsol, and the mixture of PEG and witepsol. The stability test of $PGE_1$ and the release test in urinary suppositories were performed. Futhermore, the effect of enhancers and vehicle composition on the penetration of $PGE_1$ through excised rat skin was evaluated by permeability coefficient and enhancement ratio.
Keywords
urethral suppositories; stability; enhancer;
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