Phosphodiesterase type-5 inhibitors, which include Vidalista Professional, are a class of drugs that are mostly recommended to adult men to treat erectile dysfunction. In addition, it can be used to treat adult pulmonary arterial hypertension, which will improve tolerance to exercise and prevent the condition from getting worse. Keep out of direct sunlight and store in a dry, cool area. It can be taken orally with water, ideally 30-60 minutes before having intercourse. An erection can be achieved and maintained by a guy who is sexually excited because it increases blood flow to the penis. Sexual activity requires a lot of energy since it strains your body, particularly your heart.