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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

 

Getting Started With CIALIS

If you’re new to CIALIS, use this checklist to make sure you have the best possible experience. Just click on any of the three tabs below to reveal a list of key things to remember about the two CIALIS dosing options.

It’s important to take CIALIS properly, otherwise you may not get the results you’re looking for. To help you get the most from your treatment with CIALIS, make sure to monitor and track your results, and share the information with your doctor.

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CIALIS for daily use
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Take CIALIS for daily use once-a-day, every day at about the same time, so you can be ready anytime the moment is right.*
Give CIALIS for daily use a chance to take effect. It may take up to 4 to 5 days before CIALIS for daily use starts working, or you may get results earlier.

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. If you get symptoms such as chest pain, dizziness, or nausea during sex when taking CIALIS, stop sexual activity and call your doctor right away.
Do not skip doses. Take one tablet every day. If you miss a dose, take your next dose as soon as you remember.
Do not take more than one CIALIS for daily use tablet per day.
Do not take 36-hour CIALIS while taking CIALIS for daily use.
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36-hour CIALIS
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Take one 36-hour CIALIS tablet at least 30 minutes before you expect to have intercourse. You may need to wait an hour after taking 36-hour CIALIS to attempt sex.*
Do not take more than one dose of 36-hour CIALIS in a day.
You may need to try 36-hour CIALIS more than once before you get the results you expect.
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. If you get symptoms such as chest pain, dizziness, or nausea during sex when taking CIALIS, stop sexual activity and call your doctor right away.
Do not take CIALIS for daily use while taking 36-hour CIALIS.
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Information applicable to both CIALIS options
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When you start treatment, make sure to monitor and track your results. And share them with your doctor.
Call your doctor if you get any side effect that bothers you or does not go away. Be sure to let your doctor know if you are not getting the results you had hoped for.
Remember, you must be sexually stimulated for CIALIS to work. When you are sexually stimulated, CIALIS can help you achieve and maintain an erection until the end of sexual activity. Taking CIALIS can also increase the hardness of your erection.
Do not split tablets. By doing so, you may not receive an adequate dose, or you may receive a larger dose than you need.
Do not drink too much alcohol when taking CIALIS (for example, 5 glasses of wine or 5 shots of whiskey). Drinking too much alcohol can increase your chances of getting a headache or getting dizzy, increasing your heart rate, or lowering your blood pressure.
Don't take CIALIS if you take nitrates.
Make sure you get CIALIS from a legitimate pharmacy. Many Web sites claim to be selling CIALIS, but instead deal in counterfeits. Counterfeits may be ineffective, dangerous, or both. For more information about the dangers of counterfeit medication and how to buy CIALIS safely, click here.
Do not use other ED medicines or ED treatments while taking CIALIS.
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*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.