General Info:

Cialis (Tadalafil) relaxes muscles and increases blood flow to particular areas of the body. Cialis (Tadalafil) is used to treat erectile dysfunction (impotence).

A small number of patients have had a sudden loss of eyesight after taking Cialis (Tadalafil). This type of vision loss is caused by decreased blood flow to the optic nerve of the eye. It is not clear whether Cialis (Tadalafil) is the actual cause of such vision loss. Sudden vision loss with Cialis (Tadalafil) use has occurred most often in people with heart disease, diabetes, high blood pressure, high cholesterol, or certain pre-existing eye problems, and in those who smoke or are over 50 years old.

Cialis (Tadalafil) is usually taken only when needed, just before sexual activity. The medication can help achieve an erection when sexual stimulation occurs. An erection will not occur just by taking a pill. Follow your doctor's instructions.

Do not take Cialis (Tadalafil) more than once a day. Allow 24 hours to pass between doses. Contact your doctor or seek emergency medical attention if your erection is painful or lasts longer than 4 hours. A prolonged erection (priapism) can damage the penis. Store this medication at room temperature away from moisture and heat.