What is Viagra Sildenafil?
Sildenafil citrate, sold under the very popular name Viagra is the first of medication which allows adequate sexual stimulation, relaxes the blood vessels of the penis and helps erection. Viagra relaxes muscles within the penis. This allows increased blood flow into the penis, necessary to achieve and maintain an erection. Viagra is used to treat erectile dysfunction (impotence).
Viagra tablet should be taken once a day. The time necessary for Viagra to exercise its action is about half an hour. The effect is maintained for about four hours and is obtained with a satisfactory sexual stimulation.
What is the most important information I should know about Viagra ?
Do not take Viagra more than once a day! Do not take Viagra if you are using a nitrate drug for chest pain or heart problems. Nitrates include nitroglycerin (Minitran, Deponit, Transderm-Nitro, Nitrostat, Nitro-Dur, Nitrolingual, Nitro-Bid, others), isosorbide dinitrate (Isordil, Sorbitrate, Dilatrate-SR), and isosorbide mononitrate (Imdur, Monoket, ISMO). Nitrates are also found in some recreational drugs such as amyl nitrate or nitrite (poppers).
Refrain from further sexual activity and notify your doctor it you develop dizziness, nausea, or angina (pain, tightness, numbness, discomfort, or tingling in the chest, arms, jaw, or neck) during sexual activity. Contact your doctor or seek emergency medical attention for any erection that lasts longer than 4 hours. A sustained erection can damage the penis.
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