Sildenafil Citrate

Sildenafil Citrate Side Effects

As with any medicine, side effects are possible with sildenafil citrate. However, not everyone who takes it will experience side effects. In fact, most people tolerate the drug well. If people do develop side effects, in most cases, they are minor, meaning they require no treatment or are easily treated by you or your healthcare provider.
The most common side effects include:
  • Headache --in up to 16 percent of people
  • Facial flushing -- up to 10 percent of people
  • Indigestion (dyspepsia) -- up to 7 percent of people
  • Nasal congestion -- up to 4 percent of people
  • Urinary tract Infections (UTI) -- up to 3 percent of people
  • Vision problems, including trouble telling the difference between blue and green, increased sensitivity to light, or blurred vision -- up to 3 percent of people
  • Diarrhea -- up to 3 percent of people
  • Dizziness -- up to 2 percent of people
  • Unexplained rash -- up to 2 percent of people.
There are two other rare side effects to be aware of. If you have a heart or blood vessel disease (cardiovascular disease) or significant heart disease risk factors, you will have an increased chance of developing serious problems with the heart, brain, and blood vessels. These problems can result in a heart attack, stroke, or sudden death.
In people taking sildenafil citrate or other PDE5 inhibitors, there have been rare cases of a condition called non-arteritic anterior ischemic optic neuropathy (NAION). This condition can lead to sudden loss of vision in one or both eyes. If you experience any loss of vision while taking this drug, contact your healthcare provider immediately (see Viagra and Blindness).
(Click Side Effects of Sildenafil Citrate to learn more, including other serious side effects you should report to your healthcare provider.)
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