Viagra Side Effects

As with most prescription medications, Viagra may produce the following side effects: headache, flushing, stomach upset, nasal stuffiness, diarrhea and dizziness might occur.It also causes changes in color vision, sometimes in the rare occurrence of painful, prolonged erections, seek prompt medical attention if erection last longer than four hours.

Viagra Drug Interactions
You should not take Viagra if you are taking drugs, which contain nitrates such as nitroglycerin (commonly used for chest pains because of heart disease ). 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.

If you are taking alpha-blocker therapy for the treatment of high blood pressure or prostate problems, you should not take a dose of Viagra greater than 25 mg of Viagra at the same time (within 4 hours) as you take your dose of alpha-blocker. If you are taking a protease inhibitor, your dose may be adjusted by your doctor. It should not be used with any other medical treatments that cause erections.

Viagra storage
Keep Viagra out of the reach of children. Keep Viagra in its original container. Store at 25°C (77°F); excursions permitted to 15-30°C (59-86°F) [see USP Controlled Room Temperature].