1. What is Cialis used to treat?
Cialis is approved for the treatment of men who experience difficulty having and maintaining an erection (impotence).

2. How does Cialis work?
Cialis works by enhancing the effects of one of the chemicals the body normally releases into the penis during sexual arousal. This allows an increase of blood flow into the penis. An erection is the result of an increase in blood flow into certain internal areas of the penis.

3. How is Cialis different from the currently approved products for erectile dysfunction (ED)?
Cialis is different from other currently approved products for ED in that it stays in the body longer. However, there were no studies that directly compared the clinical efficacy and safety of Cialis to other products.

4. How do I take Cialis?
Cialis is taken orally before sexual activity, not more than once daily. Cialis may be taken with or without food. In some patients, the dose strength and maximum frequency of use may be adjusted. For more detailed information consult with your health care provider.

5. Are there any side effects with Cialis?
The most commonly reported side effects in patients treated with Cialis during the testing of the product were: headache, indigestion, back pain, muscle pain, flushing, stuffy nose. Patients who get back pain and muscle aches usually get them 12 to 24 hours after taking Cialis and these usually go away by themselves within 48 hours. A small number of patients taking Cialis also reported abnormal vision.

6. Who should not take Cialis?
Cialis should not be used by patients who have: severe heart problems, stroke within the last 6 months, low blood pressure, a known hypersensitivity to tadalafil or to any ingredient of the tablet. Cialis should not be taken in combination with other erectile dysfunction treatments.

7. Can women take Cialis?
Cialis is not licensed for use in women.

8. What happens if I increase the dose?
An increase in dose should always occur under close medical supervision.

9. Can I drive while taking Cialis?
Cialis can cause dizziness. Patients should be aware of how they react to the drug before they drive or operate machinery.