Case Study: A 55-year-old male patient presents to your clin…
Case Study: A 55-year-old male patient presents to your clinic complaining of erectile dysfunction. Upon further assessment, he reports occasional difficulty achieving and maintaining an erection, particularly during sexual activity with his partner. He has a past medical history significant for hypertension and dyslipidemia, both of which are well-controlled with medication. He denies any history of diabetes mellitus or significant psychological stressors. After discussing potential treatment options, you decide to prescribe a phosphodiesterase type 5 (PDE5) inhibitor. Question: Which of the following medications acts by selectively inhibiting PDE5, thereby facilitating smooth muscle relaxation and inducing an erection?