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.

Does Cialis make you last longer?

On the other hand, the effects of Cialis last noticeably longer than the effects of Viagra, normally up to 36 hours. That's a full 1.5 days! Don't be alarmed, though: That doesn't mean you'll have an erection for 1.5 days straight.

What does Cialis do to a man?

Cialis is used for the treatment of erectile dysfunction (ED). It increases blood flow to the penis following sexual stimulation and allows men to keep an erection hard enough for sex. Cialis is also used to treat the signs and symptoms of benign prostatic hyperplasia (BPH).