vigora 100 mg does a phosphodiesterase type 5 inhibitor. It helps to relax as well as increase the blood vessels in the body. It helps to improve the blood flow in certain parts of the body. This medicine is also used for treating erectile dysfunction among men. It also treats pulmonary arterial hypertension (PAH) and ultimately improves the exercising capacity in men as well as women. It can be taken orally into the body by your physician.