Mimi - I think Oxy has tylenol in it. It might be better if RD took something else as his alternative pail reliever. Check with your pharmasist or his doctor. My orthopod specifically told me not to take tylenol with Oxy (or was it hydrocodone?) I had to switch pain meds because Oxy made me sick.
Long story short, there are preparations of both oxy- and hydrocodone with acetaminophen (Vicodin (hydro), Percocet (oxy), etc.) So yes, absolutely check with the pharmacist or doctor.