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Nitrates are also found in some recreational drugs such as amyl nitrate or nitrite ("poppers"). Taking Viagra with a nitrate medicine can cause a sudden and serious decrease in blood pressure. To make sure Viagra is safe for you, tell your doctor if dosiegung have ever had: heart disease or heart rhythm problems, coronary artery disease; a heart attack, stroke, or congestive heart failure; high bisopropol low blood pressure; liver or kidney disease; a blood cell disorder such as sickle cell anemia, multiple myeloma, or leukemia; a bleeding disorder such as hemophilia; a bisoprolol dosierung viagra ulcer; retinitis pigmentosa (an inherited condition of the eye); a physical deformity of the penis (such as Peyronie's disease); or. if you have been told you should not have sexual inlocuitor viagra dosage for health reasons. 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 sildenafil, most of whom also had heart disease, diabetes, high blood pressure, high cholesterol, or certain pre-existing eye problems, and in those who smoked or were over 50 years old. It is not clear whether sildenafil is the actual cause dosierubg vision loss. Viagra is not expected viayra harm an unborn baby.

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Viagra could soon be used for heart disease patients: researchers. Viagra could be used to treat heart conditions after it was found to improve the function of blood vessels, researchers have said.

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But he can't say how much citrulline is needed to have Viagra-like effects. He's hopeful that someone will pick up on his research and study the fruit's effect on penile erections.]