There is no ‘particular brand,’ either you are taking Cialis™ or you are taking a knock off taladfil imitator.
I have never heard of this effect you describe.
I just Googled “Cialis side effects” and constipation isn’t one of them.
My guess is you have something else going on with you; I’d look at diet and any other medications and supplements you might be taking.
Before: I'd like to show you something I'm very proud of, but you'll have to move real close.
After: I\'d like to show you something I\'m very proud of, but you guys in the front row will have to stand back.
God gave men both a penis and a brain, but unfortunately not enough blood supply to run both at the same time. - Robin Williams (: