I have an older Lab mix. I think she has a touch of the old bones. I need to know if I can give her tylenol or aspirin? Can I give her a analgesic that has a sleep aid in it? Tylenol P.M.?? She seems okay, she is eating, wagging her tail. She had the shakes earlier like she was cold. She would shiver,stop, shiver,stop etc.....She seems a little restless. She is drinking water, too.