Viagra Frequently Asked Questions

Is Viagra for me?

Viagra® (sildenafil citrate) may be for you if you have difficulty having and maintaining an erection, a condition that is called erectile dysfunction (ED). It is estimated that about 30 million men in the United States suffer from some degree of ED, including about half of all men ages 40 to 70. If you suspect you have ED, talk to your doctor about the many possible health as well as emotional factors that can contribute to the condition.

Who should not take Viagra?

Viagra isn't for everyone. If you use drugs that contain nitrates, such as nitroglycerin (drugs commonly used for the treatment of chest pains due to heart disease), you should not use Viagra. Taking Viagra with any nitrate medicine can cause your blood pressure to suddenly drop to an unsafe or life-threatening level. You could get dizzy, faint, or even have a heart attack or stroke. Nitrates also found in illegally inhaled drugs (including amyl nitrate, nitrite or "poppers," and others) have the same effect when combined with Viagra.

How does Viagra work?

When a man is sexually aroused, there is an increase in blood flow into certain internal areas of the penis, resulting in an erection. If the nerves or blood vessels in your genitals aren't working properly, you may not be able to get an erection. Viagra works by enhancing the effects of nitric oxide, one of the chemicals the body normally releases into the penis during sexual arousal, allowing an increase of blood flow so you can get and keep an erection.

How well does Viagra work?

Viagra improves erections in up to 4 out of 5 men who take it. It may not be as effective if you have a chronic health condition such as poorly managed diabetes, blocked arteries, or long-standing high blood pressure.

How can I get Viagra?

Viagra is available by prescription only. You should have a complete medical history and exam beforehand to determine the cause of your ED before taking Viagra.

How do I take Viagra?

Viagra is taken orally as a once-daily dose, an hour before sexual activity. For more detailed information, check with your physician. Viagra is available as oral tablets in 25 mg-, 50 mg- and 100-mg strengths.

Will Viagra work as soon as I take it?

Viagra is not an aphrodisiac. You don't get an erection just by taking the pill; you must be sexually aroused for it to be effective. Viagra may take as long as an hour to work, but some men see results in about 30 minutes. Like many medications, your physician may have to adjust your initial Viagra dose if it doesn't produce the desired results, or you're bothered by side effects.

How long will Viagra last?

For most patients, it lasts up to 4 hours or until orgasm.

How often can I take Viagra?

The approved dosage is no more than a pill a day.

Can I take Viagra if I drink alcohol?

Drinking alcohol can temporarily impair your ability to get an erection. To get the maximum benefit from your medication, you should not drink large amounts of alcohol before taking Viagra.

Can I take Viagra after I eat?

Yes, but if you do so after a high-fat meal, such as a burger and fries, it may take Viagra longer to work.

What kinds of side effects can Viagra cause?

The most commonly reported side effects are headache, feeling hot and flushed, stomachache, and mild and temporary visual changes (altered color and light perception, and blurred vision. If your erection lasts more than 4 hours, seek immediate medical help.

Can Viagra be used for women?

Currently, Viagra is not recommended for women.

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