I am taking Vicoprofen daily, but noticed that I retain water and do not urinate that often and when I do it is rather difficult to start. Is this a side effect of the medication. I found it listed in a few places as a possible side effect, but wanted to double check. As the dose wears off, it becomes more easier to pee, but still not going that often when compared to how much I am drinking. I am 5 ft 11 in and weigh about 210.