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Viagra - Purchase Online
Brand Names: Viagra, Revatio
Generic Name: Sildenafil
Viagra is used to treat erectile dysfunction (impotence) in men. Revatio is used to treat pulmonary arterial hypertension and improve exercise capacity in men and women. The medications' effects have a lot in common with tadalafil (Cialis), and vardenafil (Levitra).
Viagra pills are blue and diamond-shaped with the words "Pfizer" engraved on one side, and "VGR xx" (where xx stands for "25", "50" or "100", the dose of that pill in milligrams) engraved on the other. The dose of sildenafil for erectile dysfunction is 25 mg to 100 mg taken not more than once per day between 30 minutes and 4 hours prior to sexual intercourse. It is usually recommended to start with a dosage of 50 mg (or even 25 mg) and then lower or raise the dosage as appropriate.
The dosage for pulmonary arterial hypertension (Revatio) is one 20 mg tablet three times a day. Revatio pills are white, round, film-coated tablets imprinted with "RVT 20" on one side and "Pfizer" on the other.
Viagra is usually taken only when needed, 30 minutes to 1 hour before sexual activity. You may take it up to 4 hours before sexual activity. Do not take Viagra more than once per day.
Revatio is usually taken three times each day, about 4 to 6 hours apart.
Do not take Viagra when taking nitric oxide donors, organic nitrites and nitrates, such as glyceryl trinitrate (nitroglycerin), sodium nitroprusside, amyl nitrite ("poppers").
Stop using Viagra and get emergency medical help if you have sudden vision loss.
Viagra is inadvisable in men for whom sexual intercourse has a risk of heart attack and hypertension.
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.
Avoid drinking alcohol, which can increase some of the side effects of Viagra. Avoid using other medicines to treat impotence, such as alprostadil (Caverject, Muse, Edex) or yohimbine (Yocon, Yodoxin, others), without first talking to your doctor.
Amongst Viagra's rare but serious adverse effects are: priapism, severe hypotension, myocardial infarction, ventricular arrhythmias, stroke and increased intraocular pressure.
Common side effects include sneezing, headache, flushing, dyspepsia, palpitations and photophobia.
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