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What is Cialis (tadalafil)
 Cialis
(tadalafil) relaxes muscles within the penis. This allows
increased blood flow into the penis, necessary to achieve
and maintain an erection.
Cialis
(tadalafil) is used to treat erectile dysfunction (impotence).
Cialis
(tadalafil) may also be used for purposes other than those
listed in this medication guide.
General medical information about Cialis (tadalafil)
Do not take Cialis (tadalafil) if you are taking
any of the following medicines:
- a nitrate such
as nitroglycerin (Nitrostat, Nitrolingual, Nitro-Dur, Nitro-Bid,
Minitran, Deponit, Transderm-Nitro, others), isosorbide
dinitrate (Dilatrate-SR, Isordil, Sorbitrate), isosorbide
mononitrate (Imdur, ISMO, Monoket), and others;
-
nitrates are also found in some recreational drugs such
as amyl nitrate or nitrite ("poppers"); or
-
an alpha blocker (other than tamsulosin (Flomax) 0.4 mg
once a day) such as doxazosin (Cardura), guanadrel (Hylorel),
prazosin (Minipress), terazosin (Hytrin), alfuzosin (Uroxatral),
and others.
Taking Cialis (tadalafil) with any of
these medications may cause very low blood pressure, possibly
resulting in dizziness, fainting, stroke, or heart attack.
Contact your doctor or seek emergency medical attention
for any erection that lasts longer than 4 hours. A sustained
erection can damage the penis.
Refrain from further
sexual activity and notify your doctor it you develop dizziness,
nausea, or angina (pain, tightness, discomfort, numbness,
or tingling in the chest, arms, neck, or jaw) during sexual
activity.
Cialis (tadalafil) is usually taken when
needed before sexual activity. The effects of Cialis (tadalafil)
may last for up to 36 hours or more. Your doctor will determine
how often you can take Cialis (tadalafil). Do not take Cialis
(tadalafil) more often than is directed by your doctor.
What you should find out before taking
Cialis (tadalafil)
Do not take Cialis (tadalafil) if you are taking
any of the following medicines:
- a nitrate such
as nitroglycerin (Nitrostat, Nitrolingual, Nitro-Dur, Nitro-Bid,
Minitran, Deponit, Transderm-Nitro, others), isosorbide
dinitrate (Dilatrate-SR, Isordil, Sorbitrate), isosorbide
mononitrate (Imdur, ISMO, Monoket), and others;
-
nitrates are also found in some recreational drugs such
as amyl nitrate or nitrite ("poppers"); or
-
an alpha blocker (other than tamsulosin (Flomax) 0.4 mg
once a day) such as doxazosin (Cardura), guanadrel (Hylorel),
prazosin (Minipress), terazosin (Hytrin), alfuzosin (Uroxatral),
and others.
Taking Cialis (tadalafil) with any of
these medications may cause very low blood pressure, possibly
resulting in dizziness, fainting, stroke, or heart attack.
Before taking Cialis (tadalafil), tell your doctor
if you
- have heart problems such as angina, heart
failure, irregular heartbeats, or have had a heart attack;
- have low blood pressure or high blood pressure
that is not controlled;
- have had a stroke;
-
have liver problems;
- have kidney problems;
-
have ever had blood cell problems such as sickle cell anemia,
multiple myeloma, or leukemia;
- have a bleeding
disorder;
- have a stomach ulcer;
- have retinitis
pigmentosa (an inherited condition of the eye);
-
have a physical deformity of the penis such as Peyronie's
disease;
- had an erection that lasted longer than
4 hours.
You may not be able to take Cialis (tadalafil),
or you may require a dosage adjustment or special monitoring
during treatment if you have any of the conditions listed
above.
Although Cialis (tadalafil) is not indicated
for use by women, it is in the FDA pregnancy category B.
This means that Cialis (tadalafil) is not expected to be
harmful to an unborn baby. Cialis (tadalafil) should not
be taken by women.
It is not known whether Cialis
(tadalafil) passes into breast milk. Cialis (tadalafil)
should not be taken by women.
If you are over 65
years of age, you may be more likely to experience side
effects from Cialis (tadalafil). Your doctor may prescribe
a lower dose of this medication.
How should take Cialis (tadalafil) Take Cialis (tadalafil) exactly as directed by your
doctor. If you do not understand these directions, ask your
pharmacist, nurse, or doctor to explain them to you.
Take each dose with a full glass of water.
Cialis
(tadalafil) is usually taken when needed before sexual activity.
The effects of Cialis (tadalafil) may last for up to 36
hours or more. Your doctor will determine how often you
can take Cialis (tadalafil). Do not take Cialis (tadalafil)
more often than is directed by your doctor.
Cialis
(tadalafil) can help achieve an erection when sexual stimulation
occurs. An erection will not occur just by taking a pill.
Cialis (tadalafil) can be taken with or without food.
Cialis (tadalafil) should not be taken with excessive
amounts of alcohol (e.g. 5 or more drinks). Excessive alcohol
may increase the risk of headache, dizziness, increased
heart rate, or low blood pressure when Cialis (tadalafil)
is taken.
If you develop dizziness, nausea, or angina
(pain, tightness, discomfort, numbness, or tingling in the
chest, arms, neck, or jaw) during sexual activity, refrain
from further sexual activity and notify your doctor.
Contact your doctor or seek emergency medical attention
for any erection that lasts longer than 4 hours. A sustained
erection can damage the penis.
Grapefruit and grapefruit
juice may interact with Cialis (tadalafil). The interaction
could lead to potentially adverse effects. You should discuss
the use of grapefruit and grapefruit juice with your doctor.
Do not increase or decrease the amount of grapefruit products
in your diet without first talking to your doctor.
Store this medication at room temperature away from moisture
and heat.
If you miss a dose: Cialis (tadalafil) is used as needed, so you are
not likely to miss a dose.
What happens if you overdose: Seek emergency medical attention if an overdose is
suspected.
Symptoms of a Cialis (tadalafil) overdose
are not known.
Avoid while taking Cialis (tadalafil) Do not take any other drug used to treat impotence,
such as sildenafil (Viagra), vardenafil (Levitra), alprostadil
(Caverject, Muse, Edex) or yohimbine (Yocon, Yodoxin, others),
without first talking to your doctor.
Cialis (tadalafil)
should not be taken with excessive amounts of alcohol (e.g.
5 or more drinks). Excessive alcohol may increase the risk
of headache, dizziness, increased heart rate, or low blood
pressure when Cialis (tadalafil) is taken.
Grapefruit
and grapefruit juice may interact with Cialis (tadalafil).
The interaction could lead to potentially adverse effects.
You should discuss the use of grapefruit and grapefruit
juice with your doctor. Do not increase or decrease the
amount of grapefruit products in your diet without first
talking to your doctor.
Possible side effects of Cialis (tadalafil) If you experience any of the following serious side
effects, stop taking Cialis (tadalafil) and seek emergency
medical attention or contact your doctor immediately:
-
an allergic reaction (difficulty breathing; closing of the
throat; swelling of the lips, tongue, or face; or hives);
- chest pain or irregular heartbeats;
- dizziness,
nausea, or angina (pain, tightness, discomfort, numbness,
or tingling in the chest, arms, neck, or jaw);
-
swelling of the ankles or legs;
- shortness of breath;
- prolonged or severe dizziness; or
- a prolonged
(lasting longer than 4 hours) or painful erection.
Other, less serious side effects may be more likely to occur.
Continue to take Cialis (tadalafil) and talk to your doctor
if you experience
- headache;
- indigestion;
- back pain;
- muscle aches;
- flushing;
- stuffy or runny nose; or
- temporary blue
tint in vision or difficulty telling the difference between
the colors blue and green (uncommon).
Side effects
other than those listed here may also occur. Talk to your
doctor about any side effect that seems unusual or that
is especially bothersome.
What other drugs will affect Cialis (tadalafil) Do not take Cialis (tadalafil) if you are taking
any of the following medicines:
- a nitrate such
as nitroglycerin (Nitrostat, Nitrolingual, Nitro-Dur, Nitro-Bid,
Minitran, Deponit, Transderm-Nitro, others), isosorbide
dinitrate (Dilatrate-SR, Isordil, Sorbitrate), isosorbide
mononitrate (Imdur, ISMO, Monoket), and others;
-
nitrates are also found in some recreational drugs such
as amyl nitrate or nitrite ("poppers"); or
-
an alpha blocker (other than tamsulosin (Flomax) 0.4 mg
once a day) such as doxazosin (Cardura), guanadrel (Hylorel),
prazosin (Minipress), terazosin (Hytrin), alfuzosin (Uroxatral),
and others.
Taking Cialis (tadalafil) with any of
these medications may cause very low blood pressure, possibly
resulting in dizziness, fainting, stroke, or heart attack.
Before taking Cialis (tadalafil), tell your doctor
if you are taking any of the following medications:
-
any other drug used to treat impotence, such as sildenafil
(Viagra), vardenafil (Levitra), alprostadil (Caverject,
Muse, Edex) or yohimbine (Yocon, Yodoxin, others);
-
the antibiotic erythromycin (E-Mycin, Eryc, Ery-Tab, others);
- an antifungal medication such as itraconazole (Sporanox)
or ketoconazole (Nizoral); or
- HIV medications such
as indinavir (Crixivan), ritonavir (Norvir), and others.
You may not be able to take Cialis (tadalafil), or
you may require a dosage adjustment or special monitoring
during treatment if you are taking any of the medicines
listed above.
Drugs
other than those listed here may also interact with Cialis
(tadalafil) or affect your condition. Talk to your doctor
or pharmacist before taking any prescription or over-the-counter
medicines, including vitamins, minerals, and herbal products.
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