Viagra
Patient Information
This summary contains important information about
Viagra®.
It is not meant to take the place of your doctor’s instructions. Read
this information carefully before you start taking Viagra
. Ask your doctor or pharmacist if you do
not understand any of this information or if you want to know more about Viagra.
This medicine can help many men when it is used as
prescribed by their doctors. However, Viagra
is not for everyone. It is intended for use only by men who have a
condition called erectile dysfunction. Viagra
must never be used by men who are taking medicines that contain nitrates
of any kind, at any time. This includes nitroglycerin. If you take Viagra
with any nitrate medicine your blood pressure could suddenly drop to an
unsafe or life threatening level.
What Is Viagra?
Viagra
is a
pill used to treat erectile dysfunction (impotence) in men. It can help
many men who have erectile dysfunction get and keep an erection when they
become sexually excited (stimulated).
You will not get an erection just by taking this
medicine. Viagra helps a man with
erectile dysfunction get an erection only when he is sexually excited.
How Sex Affects the Body
When a man is sexually excited, the penis rapidly
fills with more blood than usual. The penis then expands and hardens. This
is called an erection. After the man is done having sex, this extra blood
flows out of the penis back into the body. The erection goes away. If an
erection lasts for a long time (more than 6 hours), it can permanently
damage your penis. You should call a doctor immediately if you ever have a
prolonged erection that lasts more than 4 hours.
Some conditions and medicines interfere with this
natural erection process. The penis cannot fill with enough blood. The man
cannot have an erection. This is called erectile dysfunction if it becomes
a frequent problem.
During sex, your heart works harder. Therefore
sexual activity may not be advisable for people who have heart problems.
Before you start any treatment for erectile dysfunction, ask your doctor
if your heart is healthy enough to handle the extra strain of having sex.
If you have chest pains, dizziness or nausea during sex, stop having sex
and immediately tell your doctor you have had this problem.
How Viagra Works
Viagra enables
many men with erectile dysfunction to respond to sexual stimulation. When
a man is sexually excited, Viagra helps the penis fill with enough blood
to cause an erection. After sex is over, the erection goes away.
Viagra
Is Not for Everyone
As noted above, ask your doctor if your heart is
healthy enough for sexual activity.
If you take any medicines that contain nitrates
– either regularly or as needed – you should never take Viagra.
If you take Viagra with any
nitrate medicine or recreational drug containing nitrates, your blood
pressure could suddenly drop to an unsafe level. You could get dizzy,
faint, or even have a heart attack or stroke. Nitrates are found in many
prescription medicines that are used to treat angina (chest pain due to
heart disease) such as:
- nitroglycerin (sprays, ointments, skin patches or
pastes, and tablets that are swallowed or dissolved in the mouth)
- isosorbide mononitrate and isosorbide dinitrate
(tablets that are swallowed, chewed, or dissolved in the mouth)
Nitrates are also found in recreational drugs such as
amyl nitrate or nitrite (“poppers”). If you are not sure if any of
your medicines contain nitrates, or if you do not understand what nitrates
are, ask your doctor or pharmacist.
Viagra is
only for patients with erectile dysfunction. Viagra
is not for newborns, children, or women. Do not let anyone else take
your Viagra. Viagra
must be used only under a doctor’s supervision.
What Viagra
Does Not Do
- Viagra does
not cure erectile dysfunction. It is a treatment for erectile
dysfunction.
- Viagra does
not protect you or your partner from getting sexually transmitted
diseases, including HIV—the virus that causes AIDS.
- Viagra is
not a hormone or an aphrodisiac.
What To Tell Your Doctor
Before You Begin Viagra
Only your doctor can decide if Viagra
is right for you. Viagra
can
cause mild, temporary lowering of your blood pressure. You will need to
have a thorough medical exam to diagnose your erectile dysfunction and to
find out if you can safely take Viagra
alone or with your other medicines. Your doctor should determine if
your heart is healthy enough to handle the extra strain of having sex.
Be sure to tell your doctor if you:
- have ever had any heart problems (e.g., angina,
chest pain, heart failure, irregular heart beats, heart attack or
narrowing of the aortic valve)
- have ever had a stroke
- have low or high blood pressure
- have a rare inherited eye disease called
retinitis pigmentosa
- have ever had any kidney problems
- have ever had any liver problems
- have ever had any blood problems, including
sickle cell anemia or leukemia
- are allergic to sildenafil or any of the other
ingredients of Viagra tablets
- have a deformed penis, Peyronie’s disease, or
ever had an erection that lasted more than 4 hours
- have stomach ulcers or any types of bleeding
problems
- are taking any other medicines
Viagra
and Other Medicines
Some medicines can change the way Viagra works. Tell
your doctor about any medicines you are taking. Do not start or
stop taking any medicines before checking with your doctor or pharmacist.
This includes prescription and nonprescription medicines or remedies:
- Remember, Viagra
should never be used with medicines that contain nitrates.
- If you are taking alpha-blocker therapy for the
treatment of high blood pressure or prostate problems, you should not
take a dose of greater than 25 mg of Viagra
at the same time (within 4 hours) as you take your dose of
alpha-blocker.
- If you are taking a protease inhibitor, your dose
may be adjusted .
- Viagra should
not be used with any other medical treatments that cause erections.
These treatments include pills, medicines that are injected or
inserted into the penis, implants or vacuum pumps.
Finding the Right Dose for
You
Viagra comes
in different doses (25 mg, 50 mg and 100 mg). If you do not get the
results you expect, talk with your doctor. You and your doctor can
determine the dose that works best for you.
- Do not take more Viagra
than your doctor prescribes.
- If you think you need a larger dose of Viagra
, check with your doctor.
- Viagra should
not be taken more than once a day.
If you are older than age 65, or have serious liver or
kidney problems, your doctor may start you at the lowest dose (25 mg) of Viagra.
If you are taking protease inhibitors, such as for the treatment of HIV,
your doctor may recommend a 25 mg dose and may limit you to a maximum
single dose of 25 mg of Viagra
in
a 48 hour period. If you are taking alpha-blocker therapy, you should not
take a dose of greater than 25 mg of Viagra
at the same time (within 4 hours) as your dose of alpha-blocker.
How To Take Viagra
Take Viagra
about
one hour before you plan to have sex. Beginning in about 30 minutes and
for up to 4 hours, Viagra can help
you get an erection if you are sexually excited. If you take Viagra
after a high-fat meal (such as a cheeseburger and french fries), the
medicine may take a little longer to start working. Viagra
can help you get an erection when you are sexually excited. You will
not get an erection just by taking the pill.
Possible Side Effects
Like all medicines, Viagra
can cause some side effects. These effects are usually mild to
moderate and usually don’t last longer than a few hours. Some of these
side effects are more likely to occur with higher doses. The most common
side effects of Viagra are
headache, flushing of the face, and upset stomach. Less common side
effects that may occur are temporary changes in color vision (such as
trouble telling the difference between blue and green objects or having a
blue color tinge to them), eyes being more sensitive to light, or blurred
vision.
In rare instances, men have reported an erection
that lasts many hours. You should call a doctor immediately if you ever
have an erection that lasts more than 4 hours. If not treated right away,
permanent damage to your penis could occur.
Heart attack, stroke, irregular heart beats, and
death have been reported rarely in men taking Viagra.
Most, but not all, of these men had heart problems before taking this
medicine. It is not possible to determine whether these events were
directly related to Viagra.
Viagra may
cause other side effects besides those listed on this sheet. If you want
more information or develop any side effects or symptoms you are concerned
about, call your doctor.
Accidental Overdose
In case of accidental overdose, call your doctor
right away.
Storing Viagra
Keep Viagra out of the reach of children. Keep
Viagra in its original container. Store at 25°C (77°F); excursions
permitted to 15-30°C (59-86°F) [see USP Controlled Room Temperature].
For More Information on Viagra
Viagra is a prescription medicine used to treat
erectile dysfunction. Only your doctor can decide if it is right for you.
This sheet is only a summary. If you have any questions or want more
information about Viagra, talk with your doctor or pharmacist or visit www.Viagra.com.
Order Viagra
Click here
to order Viagra.
Further Reading
CLICK
HERE for a list of periodical articles relating to Viagra (Sildenafil)
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