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Important Safety Information Prescribing Information Patient Information

Select Important Safety Information

Do not take CIALIS if you:

  • take medicine called "nitrates" such as isosorbide dinitrate or isosorbide mononitrate which are often prescribed for chest pain, or use recreational drugs called "poppers" like amyl or butyl nitrite, as the combination may cause an unsafe drop in blood pressure
  • are allergic to CIALIS or ADCIRCA® (tadalafil), or any of its ingredients. Call your healthcare provider or get help right away if you experience any symptoms of an allergic reaction, such as rash, hives, swelling of the lips, tongue or throat, or difficulty breathing or swallowing.

After taking a single tablet, some of the active ingredient of CIALIS remains in your body for more than 2 days. It can remain longer if you have problems with your kidneys or liver, or you are taking certain other medications.

Stop sexual activity and get medical help right away if you get symptoms such as chest pain, dizziness, or nausea during sex.

Click here for more complete safety information for CIALIS

 

What to Know About CIALIS

When you start CIALIS, you should have a clear understanding of your treatment and a realistic expectation of your results.

If you have a prescription for CIALIS for daily use:

  • While you may see results with CIALIS for daily use in the first few days, it may take 4 or 5 days before CIALIS for daily use starts working for you. When taken every day, CIALIS for daily use can help you be ready anytime the moment is right.* Everyone is different, so try to be patient and give the medicine a chance to work.
  • CIALIS for daily use comes in two doses (2.5 mg and 5 mg). Your doctor may adjust your dose depending on how your body responds to the medicine.
  • Take CIALIS for daily use at the same time each day, as part of your daily routine. For best results, take exactly as prescribed. If you have any questions about how to take CIALIS, always consult your physician.
  • If you think you may want to stop taking CIALIS for daily use for a period of time and then restart it, talk with your doctor first so you know what to expect. When you restart, it could take a few days before it starts to work for you again.

If you have a prescription for 36-hour CIALIS taken as needed:

  • 36-hour CIALIS works fast—in as little as 30 minutes in some men—but it may take longer for you.* Taking it at least one hour before sexual activity may be helpful. After you’ve taken 36-hour CIALIS a few times, you'll know the timing that works best for you. Do not take more than one tablet per day.
  • You may need to take 36-hour CIALIS more than once before you get the results you expect. But don’t give up—be patient and give yourself some time. If you take CIALIS a few times and still aren’t satisfied, talk with your doctor.

*Individual results may vary. Not studied for multiple attempts per dose.

In clinical trials, 36-hour CIALIS started to work in 30 minutes for some men who took 20 mg of 36-hour CIALIS. When taken as needed, 36-hour CIALIS was shown to improve, up to 36 hours after dosing, the ability of men with ED to have a single successful intercourse attempt.

Key things to keep in mind about both CIALIS dosing options:

  1. Do not take CIALIS if you take medicines called nitrates—often used for chest pain—as this can cause a sudden, unsafe drop in blood pressure.
  2. Before you start taking CIALIS, your doctor must know about all of the other prescription and nonprescription medicines, vitamins, and herbal supplements that you are taking. CIALIS can cause your blood pressure to drop suddenly to an unsafe level if it is taken with certain other medications.
  3. Simply taking CIALIS by itself should not give you an erection. Sexual stimulation is necessary for CIALIS to work.
  4. Taking CIALIS does not increase your sexual desire, thoughts, or behavior.
  5. CIALIS doesn't cure erectile dysfunction (ED). But it can improve your ability to get and maintain an erection, and your overall satisfaction with the hardness of your erections.