What is Cialis?

Cialis (tadalafil) is an oral drug called a phosphodiesterase-5 (PDE5) inhibitor used for treating impotence (erectile dysfunction, or ED).

Common side effects include headache, muscle pain, flushed skin, and nausea.

Health Benefits

Cialis has been shown to improve erectile function compared to placebo. In one study, men with ED who took Cialis were more likely to experience a positive response to sexual activity than those who took placebo.

Cialis may also be effective in treating urinary symptoms associated with benign prostatic hyperplasia (BPH). In one study, men with BPH who took Cialis experienced improved urinary symptoms and reduced urinary obstruction compared to those who took placebo.

Possible Side Effects

Common side effects of Cialis include headache, muscle pain, flushed skin, and nausea. More serious side effects include low blood pressure, irregular heartbeat, and priapism (a painful erection lasting longer than four hours).

Dosages

Cialis is available in tablet form and dosages of 2.5, 5, 10, and 20 mg. The recommended starting dose for most men is 10 mg, which can be adjusted based on response.

Drug Interactions

Cialis may interact with other medications, including alpha blockers, nitrates, and antidepressants. These interactions can cause low blood pressure, irregular heartbeat, and priapism.

Alcohol

Drinking alcohol while taking Cialis can increase the risk of low blood pressure, dizziness, and headache. It is recommended that you avoid drinking alcohol if you are taking this medication.

Pregnancy and Breastfeeding

Cialis is not recommended for use during pregnancy or breastfeeding. This medication can pass into breast milk and may cause side effects in a nursing baby.

Mechanism of Action

Cialis (tadalafil) is a phosphodiesterase 5 (PDE5) inhibitor indicated for the treatment of erectile dysfunction (ED). The recommended dose of Cialis for once daily use is 5 mg, taken at approximately the same time every day, without regard to timing of sexual activity.