I think every med has a positive and neg value. The only way to tell is to document how you are feeling, discuss with your doctor. What works well for many people may not for you, however you won't know until you try. also when ever a med is increased or decreased document it and how you are feeling.
My daughter has been on oral lidocaine for a year , got bad, lidocaine increased, burning pain got worst, lidocaine tapered off for relief. This week, a IV lidocaine made her cry within 10 mins. So my point is even a med that has done well for you may not later, then combining with other meds changes how you feel also. Try to change, add, subtract any meds one at a time, document it carefully, so you can refer back to your notes when you talk to your doctors. Being in pain effects your memory very much.
Don 't accept a doctors comment, well it shouldn't , I haven't heard of it, that doesn't make sense, your body, your reaction...
Remember the doctors themselves do not have personal experiences with pain such as people have on this forum, or they would be at home with their life crumbling apart.