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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