Cialis is an erectile dysfunction medication developed by Eli Lilly. Cialis works in a similar way to Viagra by making it easier to get and maintain an erection, and it has proved to be equally as successful in the treatment of impotency. Cialis is typically longer lasting than Viagra with a single dose effective for as much as long as 24 hours or more. Accordingly, it is often prescribed for men who are less able to schedule their sexual activity and need to retain the element of spontaneity. Cialis is available in 5mg, 10mg and 20mg tablets. The 5mg dose is typically prescribed for men who take Cialis on a daily basis.

Do not take CIALIS if you:

take medicines called “nitrates” such as isosorbide dinitrate or isosorbide mononitrate which are often prescribed for chest pain as the combination may cause an unsafe or dangerous drop in blood pressure
use recreational drugs called “poppers” like amyl nitrite and butyl nitrite
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

Stop sexual activity and get medical help right away if you get symptoms such as chest pain, dizziness, or nausea during sex. Sexual activity can put an extra strain on your heart, especially if your heart is already weak from a heart attack or heart disease.

What Should I Tell The Doctor Before Taking CIALIS?

CIALIS is not right for everyone. Only your doctor and you can decide if CIALIS is right for you. You should not take CIALIS if your doctor has told you not to have sexual activity because of your health problems. Before taking CIALIS, tell your doctor about all your medical problems, particularly if you have or ever had:

heart problems such as chest pain (angina), heart failure, irregular heartbeats, or have had a heart attack
high or low blood pressure or have high blood pressure that is not controlled
stroke
liver or kidney problems or require dialysis
retinitis pigmentosa, a rare genetic (runs in families) eye disease
severe vision loss, including a condition called NAION
stomach ulcers or a bleeding problem
a deformed penis shape or Peyronie’s disease
an erection that lasted more than 4 hours
blood cell problems such as sickle cell anemia, multiple myeloma, or leukemia

Can Other Medicines Affect CIALIS?

Yes, especially:

medicines called “nitrates” which are often prescribed for chest pain
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.

What Should I Avoid While Taking CIALIS?

Do not use other ED medicines or ED treatments while taking CIALIS.
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.

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.