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Description
Viagra is used to treat impotence in men. Viagra increases the body's ability to achieve and maintain an erection during sexual stimulation.
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Side Effects of This Medicine
Although side effects from Viagra are not common, they can occur. Tell your doctor if any of these symptoms are severe or do not go away:
- headache
- upset stomach
- diarrhea
- dizziness or lightheadedness
- flushing (feeling of warmth)
- nasal congestion (stuffiness)
- changes in vision
- breast enlargement
If you experience any of the follo
wing symptoms, call your doctor immediately:
- rash
- painful erection
- prolonged erection (longer than 4 hours)
- fainting
- chest pain
- itching or burning during
urination
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Special warnings about this medication
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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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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Significant Interactions:
When you are taking Viagra, it is especially important that your health care professional know if you are taking any of the following:
- Cimetidine (e.g., Tagamet)
- Erythromycin (e.g.,
E.E.S. or Ery-Tab)
- Itraconazole (e.g., Sporanox)
- Ketaconazole (e.g., Nizoral)
- Mibefradil (e.g., Posicor)
- Ritonavir (e.g., Norvir)
- Saquinavir (e.g., Fortovase or Inv
irase)¡XThese medicines may increase the unwanted effects of Viagra, unless lower starting doses of Viagra are used
- Nitrates, such as nitroglycerin (e.g., Nitrostat or Transderm-Nitro)¡XViagra
creases the lowering of blood pressure by nitrates too much and their use together is not recommended
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Other medical problems
If you have heart problems severe enough to make sexual activity a danger, you should avoid using Viagra. Use it cautiously--if at all--if you've had a heart attack, stroke, or life-threatening heart
irregularities within the past 6 months. Be equally cautious if you have severe high or low blood pressure, heart failure, or unstable angina (crushing heart pain that occurs at any time).
I
f you have a condition that might result in long-lasting erections, such as sickle cell anemia, multiple myeloma (a disease of the bone marrow), or leukemia, use Viagra with caution. Also use cautious
ly if you have a genital problem or deformity such as Peyronie's disease.
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