Tadalafil, the active medicinal ingredient in Tadalista 20 , is widely used to treat erectile dysfunction in men as well as a host of other health issues. For many men suffering from erectile dysfunction, Tadalista  is their medication of choice. Follow your doctor's advice regarding the dosage and length of time to take this medication. Eat it whole. Never break, chew, or crush it. You can take the Tadalista Tablet with or without food, but taking it at the same time every day is recommended.