Viagra

Common use

The main component of Viagra is Sildenafil Citrate. Sildenafil Citrate affects the response to sexual stimulation. It acts by enhancing smooth muscle relaxation using nitric oxide, a chemical that is normally released in response to sexual stimulation. This smooth muscle relaxation allows increased blood flow into certain areas of the penis, which leads to an erection. Sildenafil Citrate is applied for the treatment of erectile dysfunction (impotence) in men and pulmonary arterial hypertension. Sildenafil Citrate may also be used for other purposes not listed above.

Dosage and direction

Usually the recommended dose is 50 mg. It is taken approximately 0,5-1 hour before sexual activity. Do not take Viagra more then once a day. A high fat meal may delay the time of the effect of this drug. Try not to eat grapefruit or drink grapefruit juice while you are being treated with Sildenafil Citrate .

Precautions

Contraindications

Possible side effect

The most common side effects are headache, flushing, heartburn, stomach upset, nasal stuffiness, lightheadedness, dizziness or diarrhea. A serious allergic reaction to this drug is very rare, but seek immediate medical help if it occurs. Many people using this medicine do not have serious side effects. In case you notice any side effects not listed above, contact your doctor or pharmacist.

Drug interaction

This drug should not be used with nitrates and recreational drugs called "poppers" containing amyl or butyl nitrite; alpha-blocker medications; other medications for impotence; high blood pressure medicines, etc. Consult your doctor or pharmacist for more details.

Missed dose

Overdose

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