Those with a history of blood pressure or heart issues, hormonal imbalances, mental health issues, and diabetes should consult their doctor before trying PDE5 inhibitors. This allows the smooth muscles in the penis to relax and fill with blood. Stendra avanafil : This is an as-needed medication taken 30 minutes before sex and can last up to six hours. It’s available in 25 mg, 50 mg, and mg tablets and lasts up to 18 hours. You’ll also need to fill out a medical questionnaire with answers about your medical history, current medications, and lifestyle habits. People with heart conditions should never take ED medications without consulting a doctor. Finally, we checked customer reviews to better understand user experiences with each platform.Levitra is not a cure for ED and you still need to be aroused for the medication to work. Levitra and its generic version are available in doses of: milligrams; 5 milligrams; 10 milligrams. Vardenafil (Levitra): Uses, Alternatives, Side Effects & More – GoodRx feeling faint or weak, dizziness, blurry vision, feeling confused Erection lasting for more than 4 hours Headache (up to 15%) Flushing (up to 11%) Stuffy nose (up to 9%) Indigestion (up to 4%) —skin rash,, swelling of the face, lips, tongue, or throat. Generic name: Vardenafil – oral. Pronunciation (var-DEN-a-fil) Brand name(s) Levitra.