Fildena Professional is a medication used to treat erectile dysfunction (ED) in men. It contains Sildenafil Citrate, the same active ingredient found in medications like Viagra. Sildenafil works by inhibiting the PDE5 enzyme, which helps relax and widen the blood vessels in the *****, allowing more blood to flow into it when *****ly stimulated. This results in an erection. However, since Sildenafil works by influencing blood flow and blood vessel dilation, it also has an impact on the cardiovascular system. Impact of Fildena Professional on the Cardiovascular System: Blood Pressure Effects: Sildenafil, the active ingredient in Fildena Professional, has a vasodilatory effect (it widens blood vessels) and can cause a drop in blood pressure. This happens because the medication relaxes the smooth muscle of blood vessels throughout the body, not just in the *****. For most healthy men, the drop in blood pressure is typically modest and not dangerous.