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 .Several erectile dysfunction medications are available on prescription in the UK including:. It lasts 4 to 5 hours, or longer if you have mild to moderate ED. Vardenafil cannot be bought over the counter in the UK, but it is available on prescription. Alternative treatment options The only erectile dysfunction medication available over the counter in the UK is Viagra Connect. Then it will be dispatched in plain packaging with no indication of the contents inside. Oral medicines for ED usually work well and cause few side effects.Quantity Price and coupons for 10 Tablet of Vardenafil Hcl 20mg found near $ est. cash price $ with free coupon View Coupon Text Free Coupon $ est. . Vardenafil Prices, Coupons and Patient Assistance Programs. Vardenafil is a member of the impotence agents drug class and is commonly used for Erectile Dysfunction. The . The Savings Offer and Program expire on 12/31/ For further information, call , visit , or write: Viatris Inc., P.O. Box , Mission, KS .A newer form of the medicine that dissolves on the tongue might work faster than the pill that you swallow. Box , Mission, KS If your pharmacy does not participate, you may be able to submit a request for a rebate in connection with this Savings Offer. It might work longer if you have mild to moderate erectile dysfunction. Severe liver disease. Recent heart or blood vessel problems. Some examples of nitrates are nitroglycerin Nitro-Dur, Nitrostat, others , isosorbide mononitrate Monoket and isosorbide dinitrate Bidil. This medication is taken with or without food an hour before sex.