Levitra vs Cialis

Can someone compare me Levitra and Cialis? They belong in the same gropu of meds, but reading other people posts I t seems to me that work differently. How does Levitra compare with Cialis?

Both Cialis and Levitra work to relax the muscle that can block blood flow to the penis. Without this blood flow there is no erection, so if this muscle is not regulated, you get no ejection. There are few differences: 1. In Levitra , the active ingredient is Vardenafil whereas in Cialis is Tadalafil; 2.Levitra works up to 4-5 hours and in some cases up to 24 hours and Cialis lasts longer up to 36 hours; 3. Levitra takes almost 30-60 minutes to showcase its effects compared to Cialis which can show effects in 15 min; 4. most common effects associated with Levitra are Headache, facial flushing dyspepsia and nasal congestion. Most common side effects associated with Cialis are Headache, upset stomach, back pain.