Cov tshuaj no yog hom 5 Phosphodiesterase (PDE5) inhibitor. Kev tswj hwm qhov ncauj ntawm cov tshuaj no tuaj yeem txhim kho qhov zoo thiab lub sijhawm ntawm erection, thiab txhim kho qhov ua tiav ntawm kev sib deev lub neej ntawm cov txiv neej cov neeg mob uas muaj erectile kawg. Kev pib thiab kev saib xyuas ntawm penile erection yog cuam tshuam nrog kev so ntawm cov leeg nqaij leeg hauv Cavernous cov ntaub so ntswg, thiab Cyclic guanosine monophosphate (cGMP) yog tus neeg kho kom haum xeeb uas ua rau kom muaj kev so ntawm cov leeg nqaij leeg hauv Cavernous cov ntaub so ntswg. Cov tshuaj no tuaj yeem tiv thaiv qhov decomposition ntawm cGMP los ntawm inhibiting hom 5 Phosphodiesterase, thiaj li ua rau cGMP accumulates, Cavernous cov nqaij mos mos so, thiab noov erect. Piv nrog Phosphodiesterase isoenzymes 1, 2, 3, 4 thiab 6, cov tshuaj no muaj kev xaiv siab rau hom 5 Phosphodiesterase. Qee cov ntaub ntawv qhia tias nws cov kev xaiv thiab inhibition ntawm hom 5 Phosphodiesterase yog qhov zoo tshaj rau lwm hom 5 Phosphodiesterase inhibitor. Nws tau kwv yees tias qhov kev xaiv no tuaj yeem txo cov hlab plawv thiab qhov muag pom kev tsis zoo ntawm cov tshuaj no piv nrog lwm hom 5 Phosphodiesterase inhibitor.
