"i have had to use this medication for about 1 month so far for severe back pain with limb numbness...it is fantastic.  i can go to work and although i have limited mobility with my arm being numb, the pain is 90% better and tolerable.  i have experienced constipation, but without this medicine my pain is  excruciating and with it, i can have my life at least 1/2 way back."