Viagra

Viagra is a breakthrough treatment for male erectile dysfunction, often called impotence. Viagra is a convenient, discreet pill you take only when you want to have sex. Viagra can help many men who have E.D. get and keep an erection when they become sexually stimulated.

If you miss a dose

Viagra is not for regular use. Take it only before sexual activity.

Before using

Do not take his medicine if you are also taking or using nitroglycerin, (e.g., tablet, patch, or ointment dose forms) or other nitrates (e.g., isosorbide), nitroprusside (or any 'nitric oxide donor' medicine), or recreational drugs called 'poppers' containing amyl or butyl nitrate because very serious interactions may occur. If you are not sure whether a certain medicine is a nitrate, contact your doctor or pharmacist. If you are currently using any of these medicines, tell your doctor or pharmacist before using sildenafil.

Additional monitoring of your dose or condition may be needed if you are taking other medicines for impotence, azole antifungals (e.g., itraconazole, ketoconazole), cimetidine, erythromycin, mibefradil, rifamycins (e.g., rifampin), high blood pressure medicines, or delavirdine. If you are taking an HIV protease inhibitor (e.g., ritonavir, saquinavir), do not take more than a 25 mg dose of sildenafil in a 48-hour period. If you are taking more than a 25 mg dose of sildenafil and are also taking an alpha-blocker medicine (e.g., doxazosin, prazosin, terazosin) for various conditions (e.g., enlarged prostate), separate the time between taking these medicines by more than 4 hours. See How To Use section for drug-food interaction information.

Do not start or stop any medicine without doctor or pharmacist approval. Inform your doctor of any other medical conditions including penis conditions (e.g., angulation, fibrosis/scarring, Peyronie's disease), history of painful/prolonged erection (priapism), sickle cell anemia, blood system cancers (e.g., leukemia or myeloma), eye problems (e.g., retina diseases like retinitis pigmentosa), kidney or liver disease, bleeding disorders, active stomach ulcers, heart problems (e.g., recent heart attack or serious arrhythmia within past 6 months, heart failure, coronary artery disease with unstable angina, aortic stenosis, idiopathic hypertrophic subaortic stenosis), recent stroke within past 6 months, very high or low blood pressure, or allergies.

Rare Viagra Side Effects

During clinical studies, there were a number of other side effects that occurred in less than 2 percent of people taking Viagra. It is difficult to tell whether these side effects are caused by Viagra or something else.

Some of these possible Viagra side effects include, but are not limited to:

• Allergic reactions
• Angina pectoris
• Migraines
• Temporary vision loss
• Fainting
• Congestive heart failure
• Vomiting
• Dry mouth
• Anemia
• A sudden decrease in or loss of hearing
• Gout
• Arthritis
• Muscle pain (known medically as myalgia)
• Depression
• Seizures
• Anxiety
• Prolonged erections without pain
• Prolonged, painful erections (priapism)
• Insomnia
• Asthma
• Inflammation of the sinuses (sinusitis)
• Cataracts
• Urinary incontinence.

Important safety information:

• Viagra may cause dizziness, drowsiness, fainting, or blurred vision. These effects may be worse if you take it with alcohol or certain medicines. Use Viagra with caution. Do not drive or perform other possibly unsafe tasks until you know how you react to it.
• Viagra may cause dizziness, lightheadedness, or fainting; alcohol, hot weather, exercise, or fever may increase these effects. To prevent them, sit up or stand slowly, especially in the morning. Sit or lie down at the first sign of any of these effects.
• Patients with heart problems who take Viagra may be at increased risk for heart-related side effects, including heart attack or stroke. Symptoms of a heart attack may include chest, shoulder, neck, or jaw pain; numbness of an arm or leg; severe dizziness, headache, nausea, stomach pain, or vomiting; fainting; or vision changes. Symptoms of a stroke may include confusion, vision or speech changes, one-sided weakness, or fainting. Contact your doctor or seek medical attention right away if you experience these symptoms.
• Viagra may rarely cause a prolonged, painful erection. This could happen even when you are not having sex. If this is not treated right away, it could lead to permanent sexual problems such as impotence. Contact your doctor right away if this happens.

Drug Interactions

Some MEDICINES MAY INTERACT with Viagra. Tell your health care provider if you are taking any other medicines, especially any of the following:

• Alpha-blockers (eg, doxazosin), amlodipine, medicines for high blood pressure, nitrates (eg, isosorbide, nitroglycerin), or nitroprusside because severe low blood pressure with dizziness, lightheadedness, and fainting may occur
• Azole antifungals (eg, itraconazole), cimetidine, H2 antagonists (eg, famotidine), HIV protease inhibitors (eg, ritonavir), macrolide antibiotics (eg, erythromycin), or telithromycin because they may increase the risk of Viagra 's side effects
• Bosentan or rifampin because they may decrease Viagra 's effectiveness.

Viagra Storage

Viagra should be stored out of the reach of children. It should be kept in a place free of moisture and sunlight, and at room temperature. It??™s not a good idea to keep the medication near a sink or in the bathroom, since the pills may become moist. Throw away all expired medication.