Never purchase ED medications from a site or service that doesn’t require a prescription and medical documentation. Common side effects include headache, facial flushing, indigestion, and dizziness. What Are the Symptoms of Erectile Dysfunction? Other conditions that may disqualify you from an ED prescription include a history of stroke, kidney or liver disease, cancer, diabetes, or a bleeding disorder. Psychological factors like stress, depression, or anxiety can also contribute. It’s available in 25 mg, 50 mg, and mg tablets and lasts up to 18 hours. Levitra vardenafil : This medication is taken one hour before sex and can last up to 24 hours.Vardenafil (Levitra): Uses, Alternatives, Side Effects & More – GoodRx feeling faint or weak, dizziness, blurry vision, feeling confused Erection lasting for more . Generic: $ to $ for ten 10 mg tablets But your out-of-pocket cost for Levitra may depend on a few different factors that can drop these costs significantly, . Levitra Prices, Coupons and Patient Assistance Programs. Levitra is a member of the impotence agents drug class and is commonly used for Erectile Dysfunction. The cost for .