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    New Viagra Study Eases Some Fears

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    Herrmann says the safety of Viagra has not been studied in patients who have unstable angina, who have had a recent heart attack, or who have severe high or low blood pressure.

    People who have not previously had even moderate exercise (including sexual activity) or who are taking more than one drug for high blood pressure should be cautious when beginning Viagra, Herrmann says. He recommends that those who have not been exercising regularly have a stress test, since sexual activity itself carries a small increased risk of heart attack. He also recommends that those with high blood pressure take their first dose of Viagra in a doctor's office, where the effect on their blood pressure can be checked immediately.

    Vital Information:

    • According to new research, taking Viagra does not cause damaging changes to the heart among some men with coronary artery disease, as long as they are not on nitrate-containing medications.
    • The study found no changes in blood flow to the heart or lungs after heart-disease patients took Viagra.
    • Patients who never exercise or those on more than one medication for high blood pressure should be carefully screened before taking Viagra.
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