How long does Cialis last?

Cialis (tadalafil) can last up to 36 hours.

That doesn’t mean every time you take Cialis, you’ll have an erection lasting a full day and a half. Instead, Cialis can help you achieve an erection throughout those 36 hours. How long Cialis lasts is a reason why some people prefer it over other ED medications; it allows for more spontaneous sexual activity.

When to see a healthcare professional

If your erection lasts longer than 4 hours, even if it’s not painful, that’s considered a medical emergency. Call 911 or go to the nearest ER if you experience a prolonged erection.