Viagra
is used to treat male sexual function problems (erection
problems).
Viagra is taken by mouth as needed between four
hours and one-half hour before sexual activity (about
one hour before is most effective). Take only as
directed, usually once daily as needed. Sildenafil
works along with sexual stimulation to help
achieve an erection.
Headache, flushing, stomach upset, nasal
stuffiness, diarrhea and dizziness might occur. If
these effects persist or worsen, notify your
doctor promptly.
Before using Viagra, it is important to mention in
the medical questionnaire any allergies (especially
drug allergies), any penis conditions such as
fibrosis/scarring, history of painful/prolonged
erection (priapism), sickle cell anemia, blood
system cancers (such as leukemia or myeloma), or
Peyronie's disease, eye problems (retina diseases),
kidney or liver disease, bleeding disorders or
active stomach ulcers, heart diseases, stroke or
severe high or low blood pressure. Limit alcohol
intake, as it may aggravate side effects of this
drug. To avoid dizziness and lightheadedness when
rising from a seated or lying position, get up
slowly. The elderly may be more sensitive to the
side effects of Viagra, therefore caution is
advised in this group.
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