Vardenafil has been shown to be efficacious in patients with erectile dysfunction . “Did your erection last long enough for you to have successful intercourse?”). Vardenafil increases blood flow to the penis. Its action is similar to that of sildenafil, or Viagra, but Viagra lasts between 2 and 4 hours, while. Official answer: The effects of Levitra last for about 4 hours. Levitra is taken only when needed, about 60 minutes before sexual. Note: Please don't include any URLs in your comments, as they will be removed upon submission. Do not let anyone else take your medication. Do not use any of the medication from the pack if any of the blisters are torn, broken, or do not contain tablets. MediLexicon, Intl. If you ever need emergency medical treatment for a heart problem, the health care providers who treat you will need to know when you last took vardenafil. Be sure that you receive only the type of vardenafil that was prescribed by your doctor. Gvoke Gvoke glucagon injection is a ready-to-use, room-temperature stable, liquid Drug read more.