Brand Name: Viagra®
: sildenafil citrate
, 50mg & 100mg
Form(s): Oral tablet
Company Name: Pfizer Inc.
Date Approved by FDA
: March 27, 1998
What is Viagra used for?
Viagra is used to treat impotence
in men. Viagra increases the body’s ability to achieve and maintain an erection
during sexual stimulation
. Viagra does not protect you from getting sexually transmitted diseases
, including HIV
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
, 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
problems (such as cirrhosis
taking certain medications at the same time (e.g., ketoconazole
In these patients, the recommended starting dose of Viagra is 25 mg.
Viagra was not studied in patients who have a history of the following conditions:
, 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
Viagra can cause a rare but serious condition of prolonged erection
). It is important to contact your health care provider immediately if your erection lasts longer than 4 hours.
Possible side effects:
Urinary tract infection
Visual changes such as mild and temporary changes in blue/green colors or increased sensitivity to light
More information can be found at www.fda.gov/cder/ or on the package insert