Centradol ER contains Tapentadol Phenobarbital
MajorThese two medicines are known to interact. Ask your doctor or pharmacist before taking them together.
These medicines can affect each other in a serious way. Do not start taking them together unless your doctor has said it is OK. If you already take both, do not stop either one on your own: speak to your doctor or pharmacist soon.
Clinical management: Avoid or use reduced doses with close respiratory and sedation monitoring.