Viagra (sildenafil citrate) is the first oral pill to treat erectile dysfunction (impotence) in men. Viagra has been shown to improve response to sexual stimulation, with up to 82% of men experiencing improved sexual activity. Viagra has revolutionized the way physicians treat erectile dysfunction.

How to obtain a free Viagra sample
Interested in a free Viagra sample? Pfizer has distributed Viagra sample packs to many doctors’ offices. For a free Viagra sample pack, contact your physician to see if they have sample packs and if you can receive one. The sample contains 6 50mg Viagra tablets. If your doctor does not have free Viagra sample packs, call Pfizer (1-888/733-2009) and leave your doctor’s name and address. A Pfizer representative will arrange for your doctor to distribute free Viagra samples (assuming your doctor wishes to distribute free Viagra sample packs).

What is Viagra?
Sildenafil Citrate (commonly known as Viagra), was approved in 1998 by the FDA to be manufactured by Pfizer Pharmaceuticals. When taken 1 hour before sexual activity, Viagra enhances the effects of nitric oxide, a chemical that relaxes smooth muscles in the penis during sexual stimulation, allowing more blood flow to the penis. Viagra improves the response to sexual stimulation, but does not trigger an automatic erection. Viagra simply increases the body’s ability to achieve and maintain an erection. According to Pfizer, over 9 million men use Viagra, and Viagra is the most-prescribed medicine for erectile dysfunction in the U.S.

Viagra dosage
Viagra comes in 25, 50 and 100mg tablets. The recommended dose is 50mg, but physicians may adjust this dose depending on the requirements of the patient. Viagra shouldn’t be used more than once a day.

Is it real Viagra?
Viagra pills are blue, film-coated tablets with a rounded-diamond-shape, in 25, 50 and 100mg doses. Some Web sites offer Viagra, yet actually are dispensing a cheap substitute. Only pills with the above description are genuine Viagra.

Does Viagra work for erectile dysfunction?
Viagra has been tested in 100 completed and ongoing studies, which includes over 8,000 men. Evaluation of the drug activity was usually done via self-assessment. The results of a 6-month open labeled study found Viagra improved sexual function in 88% of patients. Test criteria included: maintenance, frequency and firmness of erection; frequency of orgasm; frequency and level of desire; frequency, satisfaction and enjoyment of sexual intercourse; and satisfaction of overall relationship. Viagra has also been shown to have an excellent safety profile. Viagra does not protect you from sexually transmitted diseases.

Viagra side effects
If any Viagra side effects are experienced, they are usually temporary and mild.

Most common:
• Headache
• Facial flushing
• Upset stomach
• Stuffy nose

Less common:
• Temporary bluish vision
• Mild and temporary blurred vision
• Increased sensitivity to light

How fast does Viagra work?
Viagra can start working in as little as 30 minutes, and can last up to 4 hours. Eating a meal high in fat can slow down the process, so do not consume high fat foods with Viagra for optimal results.

Best way to take Viagra
Dosage is not the same for everyone. You may only need 25mg, while others require a 100mg dose. Discuss the effectiveness with your doctor and adjust your dosage if necessary.

How you take Viagra also determines it’s efficacy. Viagra should not be taken with high fat meals. Also, alcohol is known to decrease erectile function, so for optimal results do not consume excessive amounts of alcohol while taking Viagra.

In some cases, it may take 3 or 4 times for Viagra to work. Don’t give up after the first time. And remember not to take Viagra more than once in a 24 hour period.

Who shouldn’t use Viagra for erectile dysfunction?
If taking medicines containing nitrates – either regularly or as needed – never take Viagra.

If you take Viagra with any nitrate medicine or recreational drug containing nitrates, your blood pressure could suddenly drop to an unsafe level. You could get dizzy, faint, or even have a heart attack or stroke. Nitrates are found in many prescription medicines used to treat angina (chest pain due to heart disease).

Examples of medicines containing Nitrates:
• nitroglycerin (sprays, ointments, skin patches/pastes, tablets that are swallowed or dissolved in the mouth)
• isosorbide mononitrate and isosorbide dinitrate (tablets that are swallowed, chewed, or dissolved in the mouth)
• recreational drugs like amyl nitrate or nitrite (“poppers”).

If you are unsure if any of your medicines contain nitrates, or don’t understand what nitrates are, ask your doctor or pharmacist.

General Viagra precautions
Obtain a complete medical history and exam to determine the cause of your erectile dysfunction before taking Viagra.
• Men with an abnormally shaped penis or medical conditions that may cause sustained erections like sickle-cell anemia, leukemia or multiple myeloma may not be able to take Viagra.
• Several medications are known to interact with Viagra. Tell your doctor about all medications you are taking including those without a prescription.

Viagra has not been studied with other treatments for erectile dysfunction. Combination with other treatments is not recommended.