... changed her from Norco 10's to Oxycodone 20, and over the past 3 weeks apparently it has built up in her system. She has only been taking 3 of the 4 pills prescribed for her each day. We took her to the ER and they said she was "overdosed/overprescribed" due to her other meds (heart, COPD, Alzheimers, etc.) and cannot take the OXY because it caused her CO2 level is so high it is causing mental imparement. We have already changed her back to Norco, but my question is...

"How long does a med overload - the oxy already in her system - take to get out?" She has been this way for another whole day and we need to know when she may show signs of getting better and the Oxy out of her system.

Thank you for your help from a grateful daughter/caregiver