How do I know if I cannot take Viagra?
First of all inform your doctor and pharmacist if you are allergic to sildenafil or any other medications.
Before taking Viagra, inform your doctor if you have had a heart attack, stroke, or life-threatening irregular heartbeats within the last six months; have a history of heart failure; have coronary artery disease; have angina; have high or low blood pressure; have liver impairment; have kidney impairment; have ever had blood problems, including sickle cell anemia or leukemia; have a bleeding disorder; have a stomach ulcer; have retinitis pigmentosa (an inherited condition of the eye); have a physical deformity of the penis such as Peyronie's disease; have a condition that could lead to prolonged and painful erections, such as a tumor of the bone marrow, sickle cell anemia, or leukemia; or are taking another medicine to treat impotence.
You may not be able to take Viagra, or you may require a dosage adjustment or special monitoring during treatment if you have any of the conditions listed above.
Although Viagra is not indicated for use by women, it is in the FDA pregnancy category B. This means that Viagra is not expected to be harmful to an unborn baby.
Women should not take Viagra. It is not known whether Viagra passes into breast milk. If you are over 65 years of age, you may be more likely to experience side effects from Viagra. Your doctor may prescribe a lower dose of this medication.
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