My fiancee who is NOT at Dr but does have a PHD in chemistry has had me taking dextromethorphan (robitussin) along with Aleve for pain. He said it's something about the way they bind together that makes the actual pain meds work better, in his word's (like a poor man's ketamine). I can't say whether there's truly anything to it or not and I've had to stop Aleve with my combo of Toradool DUragesic patches, etc but I still take robitussin capsules twice a day just in case it is helping.