Hello:
According to research, "Torbutrol" is normally administered for relief of dogs acute or chronic, non-productive cough associated with tracheobronchitis, tracheitis, tonsillitis, laryngitis and pharyngitis originating from inflammatory conditions of the "upper respiratory" tract in dogs. It could possibly be assigned for other purpose as noted by the Vet.
Torbutrol could also cause a feeling of nausea, that will to go away eventually, but in case you start to notice appetite change, this might be helpful as well.
It is very likely that there is a relationship to the medication with the sudden change in urinary habits. And sometimes, certain meds can make it easy for bladder infections to occur, so it would be worth having her checked by your vet for this as well.
Another option could be from anxiety in the dog. It is not uncommon to see behaviour, as well as bodily habits take change if she is feeling anxious, or aggitated.
If her behavior is very out of the norm,or appears to be causing her pain, etc;. I would contact the Vet ASAP & explain the situation, and get their professional opinion; just to be safe!
I sincerely hope this helps you some. Feel free to write again if you have anything further. I am including a website you can visit for additional information on changes in your dogs behaviour.
I wish you the best of luck & God Bless!
Please visit: http://www.centralnovavet.com/com_behavioural.html