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Viagra
Risks
Viagra can cause your blood pressure to drop suddenly to an unsafe level if it is taken with certain other medicines such as nitrates and alpha-blockers, and recreational drugs that contain nitrates called poppers. A sudden drop in your blood pressure could cause you to become dizzy, faint, or have a heart attack or stroke.
Tell all your healthcare professionals that you take Viagra. If you need emergency medical care for a heart problem, it will be important for your healthcare professionals to know when you last took Viagra.
Viagra may uncommonly cause:
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an erection that won't go away (priapism)
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vision changes, such as seeing a blue tinge to objects or having difficulty telling the difference between the colors blue and green
Some common side effects with Viagra include:
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headache
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flushing
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upset stomach
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stuffy or runny nose
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urinary tract infection
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diarrhea
What Should I Tell My Healthcare Professional?
Tell your healthcare professional if you:
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have or had heart problems
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have low blood pressure or have high blood pressure that is not controlled
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have had a stroke
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have liver problems
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have ever had severe vision loss
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have kidney problems or require dialysis
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have retinitis pigmentosa, a rare genetic (runs in families) eye disease
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have stomach ulcers
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have a bleeding problem
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have a deformed penis shape or Peyronie's disease
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have had an erection that lasted more than 4 hours
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have blood cell problems such as sickle cell anemia, multiple myeloma, or leukemia
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are taking a medicine called a protease inhibitor for the treatment of HIV
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are taking medicines called alpha blockers (alpha blockers are sometimes prescribed for prostate problems or high blood pressure)
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