Any way to counter the side effects of Percocet?

I was diagnosed with a Kidney Stone and was prescribed Percocet (oxycodone) for pain, since it’s small enough to pass, and have been plagued by the drowsiness for the past few days. I was curious if there was any way to counter that side effect, as I’m still working, and falling asleep would be a VERY bad thing for me. Are there any supplements or the like that would be safe? (the pharmascist couldn’t tell me)