Can Other Medicines Affect CIALIS?

Tell your healthcare provider about all the medicines you take, especially: medicines called "nitrates" which are often prescribed for chest pain medicines called guanylate cyclase stimulators, such as riociguat (Adempas®), used to treat pulmonary arterial hypertension and chronic-thromboembolic hypertension alpha-blockers often prescribed for prostate problems blood pressure medications medicines for HIV or some types of oral antifungal medications some types of antibiotics such as clarithromycin, telithromycin, erythromycin (several brand names exist, please contact your healthcare provider to determine if you are taking this medicine) other medicines or treatments for erectile dysfunction (ED) CIALIS is also marketed as ADCIRCA for the treatment of pulmonary arterial hypertension. Do not take both CIALIS and ADCIRCA. Do not take sildenafil citrate (Revatio®)* with CIALIS.
How Should I Take CIALIS?

CIALIS should not be taken more than one time each day. If you miss a dose, you may take it when you remember but do not take more than one dose per day. Take CIALIS exactly as your healthcare provider prescribes it.
What Should I Avoid While Taking CIALIS?

Do not use other ED medicines or ED treatments. Do not drink too much alcohol (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.
What Are The Possible Side Effects Of CIALIS?

The most common side effects with CIALIS are: headache, indigestion, back pain, muscle aches, flushing, and stuffy or runny nose. These side effects usually go away after a few hours. Men who get back pain and muscle aches usually get it 12 to 24 hours after taking CIALIS. Back pain and muscle aches usually go away within 2 days. Call your healthcare provider if you get any side effect that bothers you or one that does not go away.

Uncommon but serious side effects include:
An erection that won’t go away: If you get an erection lasting more than 4 hours, seek immediate medical help to avoid long-term injury.

In rare instances, men taking prescription ED tablets, including CIALIS, reported a sudden decrease or loss of vision or hearing (sometimes with ringing in the ears and dizziness). It’s not possible to determine if these events are related directly to the ED tablets or to other factors. If you have a sudden decrease or loss of vision or hearing, stop taking any ED tablet, including CIALIS and call a healthcare provider right away.

You are encouraged to report negative side effects of prescription drugs to the FDA. Visit or call

CIALIS does not:
Cure ED, increase a man's sexual desire, protect a man or his partner from sexually transmitted diseases, including HIV or serve as a male form of birth control.

CIALIS is available by prescription only.

*The brand listed is a trademark of its respective owner and is not a trademark of Eli Lilly and Company. The maker of this brand is not affiliated with and does not endorse Eli Lilly and Company or its products.


Please see full Patient Information and Prescribing Information.