Mechanism of Action Fildena Professional contains sildenafil citrate, a potent vasodilator that enhances blood flow to the penis, facilitating erections. While its primary function is to alleviate ED symptoms, its effects on the reproductive system warrant scrutiny. By inhibiting the enzyme phosphodiesterase type 5 (PDE5), sildenafil prolongs the action of cyclic guanosine monophosphate (cGMP), thereby promoting smooth muscle relaxation and engorgement of erectile tissue. In the realm of men’s health, discussions about erectile dysfunction (ED) often overshadow the potential effects on fertility. Fildena Professional, a medication commonly prescribed for ED, raises pertinent questions about its influence on sperm quality and male fertility.