MaGuire, at 14, has started having back leg problems. He was put on 37.5 mgs (1/2 pill) of Rimadyl twice a day. Recently, side effects of increased thirst, being hyper and vomiting once during the night are occuring. Also, we having having issues getting out in time to urinate in the morning even tho we go out several times before bed. Yesterday, I cut back the Rimadyl to 18.75 (1/4 pill) and there was no vomiting last night. I will check with the Vet also. Has anyone tried Osteo-Biflex or… Continue