The procedure for getting rid of paracetamol/ataminophen is much simpler than most, as paracetamol is scarecly soluble in very cold water, while ephedrine/pfed is very sloble, so you can use very cold ice water to dissolve the pill mass, use as small a volume of H2O as possible, and most if not all of the pfed/eph will dissolve, leaving the paracetamol to me filtered off.
Then do whatever extractions are neccesary to beat any gaaks that might bee in the pills.