We haven't had any pharmacists visit these boards in quite awhile, but I may be able to help, first
oxycodone isn't bad for the liver, it's the
acetaminophen - if it's in combo with the oxy, they make oxy with and without, so a Dr. would be wise to prescribe you one without APAP. I know all the anti-fungals are very hard on the liver, even to the danger point, so therefore it's much worse then APAP, and the combination of both would be accumulative. Acetaminophen starts to be become toxic at the 4000mg/day dose, less then that shouldn't be much cause for concern.
Curiosity skilled the cat