Since Viagra is used as needed, you are not likely to miss a dose. Store at room temperature away from moisture and heat.ĭetailed Sildenafil dosage information What happens if I miss a dose? You could be having a serious side effect of sildenafil. Follow your doctor's instructions.ĭuring sexual activity, if you become dizzy or nauseated, or have pain, numbness, or tingling in your chest, arms, neck, or jaw, stop and call your doctor right away. An erection will not occur just by taking a pill. Viagra can help you have an erection when sexual stimulation occurs.

Use the dosing syringe provided, or use a medicine dose-measuring device (not a kitchen spoon). Shake the oral suspension (liquid) before you measure a dose. Do not take Viagra more than once per day. You may take it up to 4 hours before sexual activity. Viagra is usually taken only when needed, 30 minutes to 1 hour before sexual activity. Revatio is usually taken three times each day, about 4 to 6 hours apart. Follow all directions on your prescription label and read all medication guides or instruction sheets. Take sildenafil exactly as it was prescribed for you. Sildenafil pregnancy and breastfeeding warnings (more detail) How should I take sildenafil? Women with pulmonary arterial hypertension should not stop taking sildenafil without talking to their doctor.ĭo not give this medication to anyone under 18 years old without medical advice. Tell your doctor if you are breast-feeding a baby. It is not known whether sildenafil passes into breast milk or if it could harm a nursing baby. Women with pulmonary arterial hypertension should not stop taking sildenafil without talking to their doctor. Tell your doctor if you are pregnant or plan to become pregnant. This medicine is not expected to harm an unborn baby. It is not clear whether this medicine is the actual cause of vision loss. This has occurred in a small number of people taking sildenafil, most of whom also had heart disease, diabetes, high blood pressure, high cholesterol, or certain pre-existing eye problems, and in those who smoked or were over 50 years old. Sildenafil can decrease blood flow to the optic nerve of the eye, causing sudden vision loss. If you have been told you should not have sexual intercourse for health reasons. Retinitis pigmentosa (an inherited condition of the eye) Ī blood cell disorder such as sickle cell anemia, multiple myeloma, or leukemia Ī physical deformity of the penis (such as Peyronie's disease) or Heart problems (chest pain, a heart rhythm disorder, heart attack) To make sure sildenafil is safe for you, tell your doctor if you have ever had: Taking sildenafil with a nitrate medicine can cause a sudden and serious decrease in blood pressure. Nitrates are also found in some recreational drugs such as amyl nitrate or nitrite ('poppers'). This includes nitroglycerin, isosorbide dinitrate, and isosorbide mononitrate. If you take other medicines to treat pulmonary arterial hypertension, such as riociguat (Adempas).ĭo not take this medicine if you are also using a nitrate drug for chest pain or heart problems.

You should not use sildenafil if you are allergic to it, or: Stop using sildenafil and get emergency medical help if you have sudden vision loss. A prolonged erection ( priapism) can damage the penis. Do not take sildenafil with riociguat.Ĭontact your doctor or seek emergency medical attention if your erection is painful or lasts longer than 4 hours. Tell your doctor about all your current medicines, especially riociguat ( Adempas). Some medicines can cause unwanted or dangerous effects when used with sildenafil. Warningsĭo not take sildenafil if you are also using a nitrate drug for chest pain or heart problems, including nitroglycerin, isosorbide dinitrate, isosorbide mononitrate, and some recreational drugs such as 'poppers'. Sildenafil under the name Viagra is used to treat erectile dysfunction (impotence) in men.Īnother brand of sildenafil is Revatio, which is used to treat pulmonary arterial hypertension and improve exercise capacity in men and women.ĭo not take Viagra while also taking Revatio. Sildenafil relaxes muscles of the blood vessels and increases blood flow to particular areas of the body. Generic name: sildenafil (oral) ĭrug classes: Agents for pulmonary hypertension, Impotence agents

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