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Drug Information, Interactions
Cialis
Generic Name: tadalafil (tah DAL a fil)
What is the most important information I should know about
Cialis?
Do not take Cialis if you are also using a nitrate drug for chest pain or heart problems. This includes nitroglycerin (Nitrostat,
Nitrolingual, Nitro-Dur, Nitro-Bid, and others), isosorbide dinitrate
(Dilatrate-SR, Isordil, Sorbitrate), and isosorbide mononitrate (Imdur,
ISMO, Monoket). Nitrates are also found in some recreational drugs such as
amyl nitrate or nitrite ("poppers"). Taking Cialis with a nitrate medicine
can cause a serious decrease in blood pressure, leading to fainting,
stroke, or heart attack. If you become dizzy or nauseated, or have pain,
numbness, or tingling in your chest, arms, neck, or jaw during sexual
activity, stop and call your doctor right away. You could be having a
serious side effect of Cialis. Do not take Cialis more than once a day.
Allow 24 hours to pass between doses. Contact your doctor or seek
emergency medical attention if your erection is painful or lasts longer
than 4 hours. A prolonged erection (priapism) can damage the penis.
A small number of patients have had a sudden loss of eyesight after
taking Cialis. This type of vision loss is caused by decreased blood flow
to the optic nerve of the eye. It is not clear whether Cialis is the
actual cause of such vision loss. Sudden vision loss with Cialis use has
occurred most often in people with heart disease, diabetes, high blood
pressure, high cholesterol, or certain pre-existing eye problems, and in
those who smoke or are over 50 years old.
emergency medical help if you have sudden vision loss.
What is Cialis?
Cialis relaxes muscles and increases blood flow to particular areas of
the body.
Cialis is used to treat erectile dysfunction (impotence).
Cialis may also be used for purposes other than those listed in this
medication guide.
What should I discuss with my healthcare provider before taking
Cialis?
Do not take Cialis if you are also using a nitrate drug for chest pain or heart problems. This includes nitroglycerin (Nitrostat,
Nitrolingual, Nitro-Dur, Nitro-Bid, and others), isosorbide dinitrate
(Dilatrate-SR, Isordil, Sorbitrate), and isosorbide mononitrate (Imdur,
ISMO, Monoket). Nitrates are also found in some recreational drugs such as
amyl nitrate or nitrite ("poppers"). Taking Cialis with a nitrate medicine
can cause a serious decrease in blood pressure, leading to fainting,
stroke, or heart attack.
A small number of patients have had a sudden loss of eyesight after
taking Cialis. This type of vision loss is caused by decreased blood flow
to the optic nerve of the eye. It is not clear whether Cialis is the
actual cause of such vision loss. Sudden vision loss with Cialis use has
occurred most often in people with heart disease, diabetes, high blood
pressure, high cholesterol, or certain pre-existing eye problems, and in
those who smoke or are over 50 years old.
Before taking Cialis, tell your doctor if you have:
heart disease or heart rhythm problems;
a recent history a heart attack (within the past 90 days);
a recent history of stroke or congestive heart failure (within the
past 6 months);
angina (chest pain);
high or low blood pressure;
liver disease;
kidney disease (or if you are on dialysis);
a blood cell disorder such as sickle cell anemia, multiple myeloma,
or leukemia;
a bleeding disorder such as hemophilia;
a stomach ulcer;
retinitis pigmentosa (an inherited condition of the eye);
a physical deformity of the penis (such as Peyronie's disease);
or
if you have been told you should not have sexual intercourse for
health reasons.
If you have any of these conditions, you may not be able to use Cialis
or you may need a dosage adjustment or special tests during
treatment.
women, this medication is not expected to be harmful to an unborn baby. Do
not use Cialis without telling your doctor if you are pregnant or plan to
become pregnant during treatment. Although Cialis is not for use in women,
it is not known if Cialis passes into breast milk or if it could harm a
nursing baby. Do not use this medication without telling your doctor if
you are breast-feeding a baby. You may need a lower dose of this
medication if you are older than 65. Follow your doctor's instructions.
How should I take Cialis?
Take Cialis exactly as it was prescribed for you. Do not take it in
larger doses or for longer than recommended by your doctor.
dose with a full glass of water.
Cialis can be taken with or without food.
Cialis is usually taken only when needed, just before sexual activity.
The medication can help achieve an erection when sexual stimulation
occurs. An erection will not occur just by taking a pill. Follow your
doctor's instructions.
24 hours to pass between doses. Contact your doctor or seek emergency
medical attention if your erection is painful or lasts longer than 4
hours. A prolonged erection (priapism) can damage the penis. Store this
medication at room temperature away from moisture and heat.
What happens if I miss a dose of Cialis?
Since Cialis is used as needed, you are not likely to be on a dosing
schedule.
What happens if I overdose with Cialis?
Seek emergency medicalattention if you think you have used too much of this medicine.
Symptoms of a Cialis overdose may include chest pain, nausea, irregular
heartbeat, and feeling light-headed or fainting.
What should I avoid while taking Cialis?
Avoid drinking alcohol,which can increase some of the side effects of Cialis.
Grapefruit and grapefruit juice may interact with Cialis. Discuss the
use of grapefruit products with your doctor. Do not increase or decrease
the amount of grapefruit products in your diet without first talking to
your doctor.
alprostadil (Caverject, Muse, Edex) or yohimbine (Yocon, Yodoxin, others),
unless your doctor tells you to.
What are the possible side effects of Cialis?
If you become dizzyor nauseated, or have pain, numbness, or tingling in your chest, arms,
neck, or jaw during sexual activity, stop and call your doctor right away.
You could be having a serious side effect of Cialis. Stop using Cialis and
get emergency medical help if you have sudden vision loss. Get emergency
medical help if you have any of these signs of an allergic reaction:
hives; difficulty breathing; swelling of your face, lips, tongue, or
throat.
Stop using Cialis and call your doctor at once if you have any of these
serious side effects:
chest pain or heavy feeling, pain spreading to the arm or shoulder,
nausea, sweating, general ill feeling;
irregular heartbeat;
swelling in your hands, ankles, or feet;
shortness of breath;
vision changes;
feeling light-headed, fainting; or
- penis erection that is painful or lasts 4 hours or longer.
Continue taking Cialis and talk with your doctor if you have any of
these less serious side effects:
warmth or redness in your face, neck, or chest;
stuffy nose;
headache;
upset stomach; or
back pain.
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?
Before taking Cialis, tell your doctor if you are using any of the
following medications:
cimetidine (Tagamet, Tagamet HB);
erythromycin (E-Mycin, Eryc, Ery-Tab) or clarithromycin (Biaxin);
doxazosin (Cardura), prazosin (Minipress), terazosin (Hytrin);
HIV medicines such as amprenavir (Agenerase), tipranavir (Aptivus),
darunavir (Prezista), efavirenz (Sustiva), nevirapine (Viramune),
indinavir (Crixivan), saquinavir (Invirase, Fortovase),
lopinavir/ritonavir (Kaletra), fosamprenavir (Lexiva), ritonavir
(Norvir), atazanavir (Reyataz), or nelfinavir (Viracept);
itraconazole (Sporanox) or ketoconazole (Nizoral);
carbamazepine (Tegretol), phenobarbital (Luminal), or phenytoin
(Dilantin); or
rifampin (Rifadin, Rimactane).
If you are using any of these drugs, you may not be able to take
Cialis, or you may need dosage adjustments or special tests during
treatment.
There may be other drugs not listed that can affect Cialis. Tell your
doctor about all the prescription and over-the-counter medications you
use. This includes vitamins, minerals, herbal products, and drugs
prescribed by other doctors. Do not start using a new medication without
telling your doctor.
Where can I get more information on Cialis?
- Your pharmacist has additional information about Cialis written for
health professionals that you may read.
What does my medication look like?
Tadalafil is available with a prescription under the brand name Cialis.
Other brand or generic formulations may also be available. Ask your
pharmacist any questions you have about this medication, especially if it
is new to you.
Cialis 5 mg-yellow, almond-shaped, film-coated tablets
Cialis 10 mg-yellow, almond-shaped, film-coated tablets
Cialis 20 mg-yellow, almond-shaped, film-coated tablets
- Remember, keep this and all other medicines out of the reach of
children, never share your medicines with others, and use this
medication only for the indication prescribed.
- Every effort has been made to ensure that the information provided
by Cerner Multum, Inc. ('Multum') is accurate, up-to-date, and complete,
but no guarantee is made to that effect. Drug information contained
herein may be time sensitive. Multum information has been compiled for
use by healthcare practitioners and consumers in the United States and
therefore Multum does not warrant that uses outside of the United States
are appropriate, unless specifically indicated otherwise. Multum's drug
information does not endorse drugs, diagnose patients or recommend
therapy. Multum's drug information is an informational resource designed
to assist licensed healthcare practitioners in caring for their patients
and/or to serve consumers viewing this service as a supplement to, and
not a substitute for, the expertise, skill, knowledge and judgment of
healthcare practitioners. The absence of a warning for a given drug or
drug combination in no way should be construed to indicate that the drug
or drug combination is safe, effective or appropriate for any given
patient. Multum does not assume any responsibility for any aspect of
healthcare administered with the aid of information Multum provides. The
information contained herein is not intended to cover all possible uses,
directions, precautions, warnings, drug interactions, allergic
reactions, or adverse effects. If you have questions about the drugs you
are taking, check with your doctor, nurse or pharmacist.
