You should also call your insurance company to see if they cover erectile dysfunction medications. It’s available in 50 mg, mg, and mg tablets. Now, the Drug Enforcement Agency DEA has proposed new rules that will require an in-person visit for anything more than a day supply of controlled substances to be filled by an online pharmacy. We considered cost, medications available, and whether generic versions were offered to help reduce costs. If approved, the provider will issue a prescription.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. Levitra (vardenafil): This medication is taken one hour before sex and can last up to 24 hours. It’s available in 10 mg and 20 mg tablets. Stendra (avanafil): This is an as-needed medication taken 30 minutes before sex and can last up to six hours. It’s available in 50 mg, mg, and mg tablets. Updated on December 12, Key takeaways: The best treatment for erectile dysfunction (ED) is the one that is best for you. Sildenafil (Viagra) and tadalafil (Cialis) are the most commonly prescribed medications for ED, and they have the longest track record. For occasional use, most people start with sildenafil.