Tadalafil, the main ingredient in Tadacip, is a member of the class of medications known as phosphodiesterase type 5 (PDE 5) inhibitors. By encouraging blood channel relaxation, it raises blood flow to the penis. Additionally, pulmonary arterial hypertension (PAH) is treated with it. Tadacip reduces blood flow to the penis by inhibiting specific enzymes (PDE5). As a result, it increases blood flow and oxygen delivery while relaxing the blood vessels supplying the penis. Tadacip 20 reduces blood pressure in the lungs and lessens the symptoms of pulmonary arterial hypertension by relaxing the blood arteries that supply the lungs.