Who should not take Viagra?
Men who are currently using medicines that contain nitrates,
such as nitroglycerin should not use Viagra because taken
together they can lower the blood pressure too much.
Viagra should not be used by women or children.
Reports of Patients’ Experiences Since Viagra
Became Available:
In patients taking Viagra, several heart-related side effects
have been reported, including heart attack, sudden death,
irregular heart rhythm, stroke, chest pain, and increased
blood pressure. It is not possible to determine whether these
events are directly related to Viagra, to sexual activity,
to the patient’s heart condition, to a combination of
these factors, or to other factors.
The following factors are associated with increased blood
levels of Viagra:
- age greater than 65 years
- liver problems (such as cirrhosis)
- severe kidney
problems
- taking certain medications at the same time (e.g., ketoconazole,
itraconazole, erythromycin and saquinavir).
- In these patients, the recommended starting dose of Viagra
is 25 mg.
Special Warnings:
- Viagra was not studied in patients who have a history
of the following conditions:
- Heart attack, stroke, or life-threatening irregular heart
rhythm within the last 6 months
- Very low and very high
blood pressure
- Heart failure or unstable chest pain
Certain eye disorders
Because Viagra lowers blood pressure, your doctor will evaluate
your overall medical condition to determine if Viagra, in
combination with sexual activity, could adversely affect you.
Viagra can cause a rare but serious condition of prolonged
erection (priapism). It is important to contact your health
care provider immediately if your erection lasts longer than
4 hours.
Men for whom sexual activity is inadvisable may not be good
candidates for Viagra.
Tell your doctor if you are taking protease inhibitors for
the treatment of HIV.
General Precautions with Viagra:
You should have a complete medical history and exam
to determine the cause of your impotence before taking Viagra.
Men who have medical conditions that may cause a sustained
erection such as sickle cell anemia, leukemia
or multiple myeloma or who have an abnormally shaped penis
may not be able to take Viagra.
There are several medications that are known to interact with
Viagra, so be sure to tell your doctor about all medications
you are taking including those you can get without a prescription.
Viagra has not been studied with other treatments for impotence,
so use in combination with other treatments is not recommended.
What are some possible side effects of Viagra?
(This list is NOT a complete list of side effects reported
with Viagra. Your health care provider can discuss with you
a more complete list of side effects.) (See "Reports
of Patients’ Experiences Since Viagra Became Available
" for additional information). The following is a listing
of the most common side effects:
- Headache
- Flushing
- Upset stomach
- Stuffy nose
- Urinary
tract infection
- Visual changes such as mild and temporary changes in blue/green
colors or increased sensitivity to light.
- Diarrhea
- For more detailed information about Viagra, Click
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