What is Viagra?
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Topic: Viagra

Viagra relaxes muscles and increases blood flow to particular areas of the body.

Sildenafil under the name Viagra is used to treat erectile dysfunction (impotence) in men. Another brand of sildenafil is Revatio, which is used to treat pulmonary arterial hypertension and improve exercise capacity in men and women.

Viagra may also be used for other purposes not listed in this medication guide.

Important information about Viagra

Do not take Viagra if you are also using a nitrate drug for chest pain or heart problems. This includes nitroglycerin (Nitrostat, Nitrolingual, Nitro-Dur, Nitro-Bid, and others), isosorbide dinitrate (Dilatrate-SR, Isordil, Sorbitrate), and isosorbide mononitrate (Imdur, ISMO, Monoket). Nitrates are also found in some recreational drugs such as amyl nitrate or nitrite ("poppers"). Taking Viagra with a nitrate medicine can cause a serious decrease in blood pressure, leading to fainting, stroke, or heart attack. During 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. You could be having a serious side effect of Viagra. Do not take Viagra more than once a day. Allow 24 hours to pass between doses. Contact your doctor or seek emergency medical attention if your erection is painful or lasts longer than 4 hours. A prolonged erection (priapism) can damage the penis.

Viagra can decrease blood flow to the optic nerve of the eye, causing sudden vision loss. This has occurred in a small number of people taking Viagra, most of whom also had heart disease, diabetes, high blood pressure, high cholesterol, or certain pre-existing eye problems, and in those who smoke or are over 50 years old. It is not clear whether Viagra is the actual cause of vision loss.

Stop using Viagra and get emergency medical help if you have sudden vision loss.

 learn more... What is Viagra? http://www.drugs.com/viagra.html

Viagra - scientific achievement? Opinions of scientists and experts.
Topic: News viagra.

New research had announced that Viagra causes many side effects and added hearing loss as one of them. In the last ten years FDA received about 30 complains of people that are using Viagra about sudden hearing loss.
FDA will now add a warning to Viagra and other drugs for pulmonary hypertension which contain the same ingredient as Viagra such as Cialis, Levitra and Revatio.

But, there are differences in opinions within the experts. Some of them say that the risk is too small and that is no direct link between these drugs and hearing loss. They say the research needs time to establish weather the connection exists or not. However, agency add the warning to the drug labels because the period between patients taking the drug and loss of hearing was very short.

Experts say that there’s no need to panic because in most of the reported cases, loss of hearing wasn’t temporary and it involved just one ear.

http://www.steadyhealth.com/ 

Book about viagra
Topic: Books about the viagra
You read what books about the viagra, what opinions?

Viagra:good or bad.
Topic: Viagra

Here that wrote about viagra in  March 08, 2001 on site
http://www.fda.gov/cder/consumerinfo/viagrafaq.htm

 FREQUENTLY ASKED QUESTIONS CONCERNING VIAGRA

1. What is Viagra for?

Viagra is approved for the treatment of men who have difficulty having and maintaining an erection (impotence).

2. When will Viagra be available to pharmacies?

It is our understanding that Viagra will be available to pharmacies in approximately one month. FDA has no control over when products are available in pharmacies after FDA approval for marketing. The decision of availability is completely up to the company marketing the product. For further information contact your pharmacist or Pfizer, Inc. directly.

3. How much will Viagra cost?

The FDA has no input into or legal control over the pricing of any drug product. At the present time, FDA is unaware of the price that Viagra will have when it is available in US pharmacies.

4. Will insurance cover the cost of Viagra?

The FDA has no input into or legal control over whether an insurance company does or does not cover the cost of drugs. Please call you insurance company if you have questions about whether your particular insurance provider will cover the cost of this product for you.

5. How does Viagra work?

An erection is the result of an increase in blood flow into certain internal areas of the penis. Viagra works by enhancing the effects of one of the chemicals the body normally releases into the penis during sexual arousal. This allows an increase of blood flow into the penis.

6. How do I take Viagra?

Viagra is taken orally as a once daily dose, one hour before sexual activity. For more detailed information consult with your health care provider.

7. How will Viagra be supplied?

Viagra will be available as oral tablets in 25mg, 50mg and 100mg strengths.

8. Will Viagra be prescription or OTC?

Viagra will be available by prescription only.

9. Are there any side effects with Viagra?

As with any drug products, there are side effects of the product in some people. The most commonly reported side effects in patients treated with Viagra during the testing of the product were: headache, flushing, stomach ache, and mild and temporary visual changes (color perception changes, light perception changes, and blurred vision).

10. Can Viagra be used with other treatment for impotence?

The safety and effectiveness of Viagra when used with other treatment for impotence has not been studied. The use of such treatments in combination with Viagra is not recommended at present.

11. What if I am taking other drugs?

Always discuss with your health care practitioner ALL of the medications you are taking (prescription and over-the-counter). In that way, you can receive the best advice for your own situation. At present, Viagra is not recommended for people taking nitroglycerin because the combination may lower blood pressure.