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What is this medicine
Viagra (sil-DEN-a-fil) belongs to a group of medicines that delay the enzymes called phosphodiesterases from working too quickly. The penis is one of the areas where these enzymes work. Viagra is used
to treat men who have erectile dysfunction (also called sexual impotence).
By controlling the enzyme phosphodiesterase, Viagra helps to maintain an erection that is produced when the penis i
s stroked. Without physical action to the penis, such as that occurring during sexual intercourse, Viagra will not work to cause an erection
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Proper Use of This Medicine
Viagra comes as a tablet to take by mouth. It should be taken as needed about 1 hour before sexual activity. However, Viagra can be taken anytime from 4 hours to 30 minutes before sexual activity. Via
gra should not be taken more than once a day. Follow the directions on your prescription label carefully, and ask your doctor or pharmacist to explain any part you do not understand. Take Viagra exact
ly as directed. Do not take more or less of it or take it more often than prescribed by your doctor.
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Cautions
Viagra has not been studied with other medicines used for treatment of erectile dysfunction. Presently, using them together is not recommended .
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- Use Viagra exactly as directed by your doc
tor. Do not use more of it and do not use it more often than your doctor ordered. If too much is used, the chance of side effects is increased.
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If you experience a prolonged or painful erec
tion for 4 hours or more, contact your doctor immediately. This condition may require prompt medical treatment to prevent tissue damage of the penis and possible permanent impotence.
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Precautions Before Using This Medicine
Breast-feedingˇXIt is not known whether Viagra passes into breast milk. Viagra is not indicated for use in women.
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What side effects may occur?
Along with its needed effects, a medicine may cause some unwanted effects. Although not all of these side effects may occur, if they do occur they may need medical attention.
- Abnormal visio
n, including blurred vision, seeing shades of colors differently than before, or sensitivity to light; bladder pain; cloudy or bloody urine; dizziness; increased frequency of urination ; pain on
urination
- Bleeding of the eye; convulsions (seizures) ; decreased vision or other changes in vision; double vision; prolonged, painful, or inappropriate erection of penis; redness, b
urning, or swelling of the eye; vision loss, temporary
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Overdosage
Although there is no report for overdose of Viagra, any medication taken in excess can have serious consequences. If you suspect an overdose, seek medical attention immediately.
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