Your doctor will discuss the best treatment plan for you. This site is intended only for U. The titration studies, in which most patients received mg, showed similar results. Follow the directions on your prescription label carefully, and ask your doctor or pharmacist to explain any part you do not understand. Do not mix the liquid with other medications or add anything to flavor the medication. Sexual function data were also recorded by patients in a daily diary. This medicine is available on prescription and you can also buy it from most pharmacies.Sildenafil (Viagra) is a medicine used to treat erectile dysfunction (ED, also called impotence). Sildenafil works by helping to relax the blood vessels in the penis, allowing more blood to flow in and cause an erection. You should take sildenafil about an hour before planned sexual activity, so it has time to work. AdFind the lowest available Sildenafil prices in your area. No sign-up required. Save now! Search & compare local Sildenafil prices. Save up to 80% on Sildenafil instantly!Search 1,s Of Drugs · The Industry Leader · Simple & Easy · Use InstantlyMore: HELP · How It Works · FIND A PHARMACY. AdGet a Prescription for ED treatment, discreetly deliverED to your door.