One frequent oral medicine used to treat erectile dysfunction is called Filitra. It contains the phosphodiesterase type 5 inhibitor vardenafil, which aids in enhancing blood flow to the penis and promoting erections during sexual stimulation. Usually, one dose of the medicine is given as needed, between thirty and sixty minutes before planned sexual activity. You can take it with or without food, though meals heavy in fat will slow down how quickly it works. Taking a glass of water, swallow the tablet whole. If you are taking soft capsules or oral disintegrating tablets, make sure you follow the directions on the patient information booklet that comes with them or your healthcare professional. Unless otherwise instructed, never chew, split, or crush the pills.