Cialis vs Viagra - who's winner?

Cialis and Viagra increase your blood flow to the penis. The most difference is Cialis. Time effect of Cialis during a 36 hour! Time effect with Viagra about four hours.
Cialis also take effect a faster than Viagra. Approximately is a half hour.

Comparison of Cialis and Viagra:

	Cialis	Viagra
Dosage	10mg,20mg this dose can't be repeated for 2 days	50mg,100mg this dose can be repeated following day
Taking Effect	20 Minutes	40 Minutes
Duration	36 Hours	4 Hours