These sites may send you dangerous counterfeits instead of the meds you need. People taking nitrates like nitroglycerin Nitrostat or isosorbide mononitrate Imdur should not take PDE5 inhibitors, as doing so could result in a dangerous drop in blood pressure. Medicines that you take by mouth are called oral medicines. Just visit a participating pharmacy. We considered cost, medications available, and whether generic versions were offered to help reduce costs. Follow-up support: Make sure you can get the help you need if questions or concerns arise after ordering. However, others work on a cash-pay basis and don’t partner with insurance companies.No, vardenafil isn’t available over the counter (OTC). This is because it has some risks, like low blood pressure and painful erection, that your provider will want to . Brand name: $ to $1, for ten to thirty 10 mg tablets Generic: $ to $ for ten 10 mg tablets But your out-of-pocket cost for Levitra may depend on a few . Oral medicines for ED usually work well and cause few side effects. The four main medicines taken by mouth for erectile dysfunction are: Avanafil (Stendra). Sildenafil .