I HAVE END STAGE PARKINSON'S DISEASE.  I UNDERWENT A VERY SUCCESSFUL  
BRIAN OPERATION AND THANK GOD I CAN WALK AGAIN.  THE DOWNSIDE IS I AM
ADDICTED TO VICODIN.  I AM TAPERING OFF UNDER A DOCTOR'S SUPERVISION
AND AM DOWN TO I/2 PILL EVERY 11 HOURS.  DOES IT NOW GO FASTER AND GET
EASIER?  I AM TIRED OF IT.

I had a similar situation.  At the point that you are, I just stopped.
 I had sweats, stomach cramps, etc for about 30 hours.  I felt bad for
maybe 30 hours more.  That was in December, 1999 and I haven't had an
urge or problem since, nor have I needed any medication at all.  Not
even aspirin.  My injury was a broken neck and the 24 hour pain lasted
13 years and 1 month.  Best of luck to you.