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A lot of people knowabout Levitra and reasonable Cialis as medicines for erectile dysfunction (ED). Many peoplewho are dealing with ED have found hope and faith in these medicines.Levitra tells the muscles in the penis; blood vessels to loosen up. This lets more bloodmove in. The penis gets hard and straight when blood rushes into it. This whole process doesn’twork right for guys with ED. Something is stopping the blood vessels from opening properly, orthere isn’t enough nitric oxide.