PDE5 inhibitors are a group of medicines that includes the well-known brand Fildena 200. Typically, sildenafil citrate 200mg, a thorough medication, is used to treat adult patients with erectile dysfunction or insufficiency. By increasing blood flow to the male reproductive system, it helps to elicit and sustain an erection during sex. Fildena is also known to help with physiological issues brought on by erectile dysfunction, such as stress, anxiety, and relationship issues. A condition known as pulmonary arterial hypertension causes a rise in blood pressure in the arteries, veins, or capillaries.