Cov tshuaj nquag ntawm Cialis, tadalafil, belongs rau ib pawg tshuaj hu ua 'phosphodiesterase type 5 (PDE5) inhibitors'. Nws ua haujlwm los ntawm kev thaiv cov phosphodiesterase enzyme, uas feem ntau zom cov tshuaj hu ua cyclic guanosine monophosphate (cGMP). Thaum lub sij hawm ib txwm muaj kev sib deev stimulation, cGMP yog tsim nyob rau hauv noov, qhov uas nws ua rau cov nqaij ntshiv ntawm qhov chaw mos (corpora cavernosa) kom so, tso cai rau cov ntshav ntws mus rau hauv lub corpora, ua erection.
Los ntawm kev thaiv kev tawg ntawm cGMP, Cialis rov ua haujlwm erectile. Txawm li cas los xij, kev sib deev stimulation tseem xav tau. Los ntawm thaiv cov phosphodiesterase enzyme thiab tiv thaiv kev tawg ntawm cGMP, Cialis kuj txhim kho cov ntshav ntws mus rau, thiab so cov leeg ntawm, prostate thiab zais zis. Qhov no tuaj yeem txo cov teeb meem nrog cov zis tso zis uas yog cov tsos mob ntawm benign prostatic hyperplasia.
