Cialis is a phosphodiesterase inhibitor used to treat sexual function problems such as impotence or erectile dysfunction. In combination with sexual stimulation, Cialis works by helping the blood flow into the penis to achieve and maintain an erection. Cialis is not intended for use in women or children. Cialis will not protect against sexually transmitted diseases including HIV infection. Use "safe sex" practices such as latex condoms. Contact your doctor or pharmacist for more details about Cialis.
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Currently, there are no over-the-counter medications that are effective for the treatment of impotence, a condition in which men have difficulty getting or keeping an erection..