Yes, I gave a cat opiates on Friday night. None since though. He really wants to get out of his tiny cage.
In case anyone doesn't know, I'm a catsitter. And as for the above, I'm looking after a cat who was hit by a car and is on cage rest with a broken hip. We are trying him without the opiate as he seems pretty OK, and he is on another painkiller. He does hate being confined to a cage but it's for his own good and he has everything he needs including some toys and he's sleeping a lot of the time. Have to get back now... just nipped home for emails and see to my own cats (I've been actually staying at his place which I don't normally do), but his folks are back later.