On the whole the concurrent use of 
NSAIDs and 
opioids is successful and without incident. The following specifically studied pairs have not been found to interact adversely: alfentanil with parecoxib, 
codeine with diclofenac, dextropropoxyphene (propoxyphene) with meclofenamate, dextropropoxyphene (propoxyphene) with 
sulindac, fentanyl with parecoxib, methadone with 
intramuscular diclofenac, and morphine with 
ketoprofen. There seems no reason to assume other 
NSAIDs and 
opioids will interact. However, see the specific instances discussed below. 
 No action needed.