Tell all your healthcare providers that you take Cialis. If you need emergency medical care for a heart problem, it will be important for your healthcare provider to know when you last took Cialis.

After taking a single tablet, some of the active ingredient of Cialis remains in your body for more than 2 days. The active ingredient can remain longer if you have problems with your kidneys or liver, or you are taking certain other medications (see "Can other medications affect Cialis?").

What is Cialis?

Cialis is a prescription medicine taken by mouth for the treatment of erectile dysfunction (ED) in men.

ED is a condition where the penis does not harden and expand when a man is sexually excited, or when he cannot keep an erection. A man who has trouble getting or keeping an erection should see his doctor for help if the condition bothers him. Cialis may help a man with ED get and keep an erection when he is sexually excited.

Cialis does not:

• increase a man's sexual desire
• protect a man or his partner from sexually transmitted diseases, including HIV. Speak to your doctor about ways to guard against sexually transmitted diseases.
• serve as a male form of birth control

Cialis is only for men with ED. Cialis is not for women or children. Cialis must be used only under a doctor's care.

How does Cialis work?

When a man is sexually stimulated, his body's normal physical response is to increase blood flow to his penis. This results in an erection. Cialis helps increase blood flow to the penis and may help men with ED get and keep an erection satisfactory for sexual activity. Once a man has completed sexual activity, blood flow to his penis decreases, and his erection goes away.

Who can take Cialis?

Cialis has been shown to be effective in men over the age of 18 years who have erectile dysfunction, including men with diabetes or who have undergone prostatectomy.

Who should not take Cialis?

Do not take Cialis if you:

• take any medicines called "nitrates" (See "What important information should you know about Cialis?"). Nitrates are commonly used to treat angina. Angina is a symptom of heart disease and can cause pain in your chest, jaw, or down your arm. Medicines called nitrates include nitroglycerin that is found in tablets, sprays, ointments, pastes, or patches. Nitrates can also be found in other medicines such as isosorbide dinitrate or isosorbide mononitrate. Some recreational substances called "poppers" also contain nitrates, such as amyl nitrate and butyl nitrate. Do not use Cialis if you are using these substances. Ask your doctor or pharmacist if you are not sure if any of your medicines are nitrates.
• take medicines called "alpha blockers", other than Flomax. 0.4 mg daily. Alpha blockers are sometimes prescribed for prostate problems or high blood pressure. If Cialis is taken with alpha blockers other than Flomax. 0.4 mg daily, your blood pressure could suddenly drop to an unsafe level. You could get dizzy and faint.
• you have been told by your healthcare provider to not have sexual activity because of health problems. Sexual activity can put an extra strain on your heart, especially if your heart is already weak from a heart attack or heart disease.
• are allergic to Cialis or any of its ingredients. The active ingredient in Cialis is called tadalafil. See the end of this leaflet for a complete list of ingredients.
  

More Cialis Information:

Product Information [HTML] [PDF] - Provides a more in depth discussion of Cialis.

FDA Approves Third Substance To Treat Erectile Dysfunction - Nov 21, 2003

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