Before Using This medicine: Viagra has been tested in
more than 120 controlled studies
(completed and ongoing)
including over 8,800 men.
Through these studies and its
real-world experience, Viagra
has been shown to have a strong
safety profile. Viagra has
helped more than 16 million men
around the world improve their
sex lives. VIAGRA is the #1
prescribed medicine for ED in
the US. If you are taking
medicine for high blood
pressure, you should know that,
of the nearly 10 million men in
the US who have taken Viagra,
more than 1 million of them have
also taken medicines for high
blood pressure. Like many
medications, Viagra is not a
suitable treatment for all
individuals. Death may result
from certain drug interactions
with Viagra, do not take any
medication in conjunction with
this treatment that has not been
approved by your prescribing
physician. If you are having
surgery, including dental
surgery, tell your doctor or
dentist that you take Viagra.
Tell your doctor if you use amyl
nitrate, amyl nitrite, or butyl
nitrate.
Other Medical Problems: Viagra does not directly cause
an erection, but it alters the
body's response to sexual
stimulation by enhancing the
effect of the nitric oxide, a
chemical that is normally
released during stimulation.
Nitric oxide causes relaxation
of the muscles in the penis,
which allows for better blood
flow to the penile area.
Proper Use of This Medicine: Take 1/2 to 1 tablet 30-60
minutes prior to sexual activity
not to exceed 1 tablet in 24
hours.
Precautions While Using This
Medicine: This medication
may cause dangerous side effects
if mixed with certain
prescription or herbal
preparations. As some of these
interactions could be life
threatening, be sure to give
your prescribing physician a
full list of all products taken.
If you are using Viagra, consult
with a doctor or pharmacist
before using a new prescription
or herbal treatment for any
reason. Tell your doctor and
pharmacist what prescription and
nonprescription medications you
are taking, especially
amlodipine (Norvasc) or other
medications for high blood
pressure, cimetidine (Tagamet,
Tagamet HB), erythromycin,
isosorbide (Imdur, Ismo, Isordil,
and others), itraconazole (Sporanox),
ketoconazole (Nizoral),
nitroglycerin (Nitro-Bid,
Nitrostat, and others), other
medications to treat impotence,
phenobarbital, rifampin (Rifadin,
Rimactane), ritonavir (Norvir),
saquinavir (Invirase), and
vitamins.
Side Effects of This
Medicine: Do not take with
grapefruit juice, as this may
cause an undesirable build up in
the body and increase the risk
of side effects. Common Side
Effects: Altered vision (blue
tint or haze), congested
sinuses, or dry eyes. These
events may occur in as many as
3% of patients. Mild Adverse
Side Effects: Flushing,
headache, indigestion, light
sensitivity, rash, unable to
tell between blue and green.
While these infrequent reactions
may not pose an immediate
danger, contact your physician
as soon as possible, and avoid
this medication until you have
received further instructions.
Serious Adverse Side Effects:
Arrhythmia, blood sugar problems
(in patients with history of
diabetes), decreased blood flow
to the heart, heart attack,
priapism (prolonged and painful
erection), seizures, swelling or
redness of the eyes, or
temporary blindness. These
extremely rare side effects
indicate the need for emergency
medical attention. Call
emergency services immediately.
Tell your doctor if you have or
have ever had a bleeding
disorder; heart, kidney, or
liver disease; a heart attack;
irregular heartbeats; angina; a
stroke; high or low blood
pressure; sickle cell anemia;
multiple myeloma; leukemia;
conditions affecting the shape
of the penis (e.g., angulation,
cavernosal fibrosa, or
Peyronie's disease); or a
condition known as retinitis
pigmentosa.
