mum is 77, in constant backpain cant walk much due to so much pain, spine as been investigated, and nothing can be done,could u recomend a effective pain tablet, she ad lung cancer 5yrs ago is now clear still as pain in lung area as disease also. as took tramadol 4hourly does not help took did take morfine tablet only helped a little but ad side effects,she does suffer with tummy probs from some tabs.what do u sugest doctor gave her duloxetine 60mg is that for pain, i thought they r antidepressants.