I am new to using meds for pain, I have been taking vicoden since November 2002...and in the first months, one pill would do a pretty good job of alleviating most of my pain. Now it seems that I more often need two at a time. My doc isn't concerned at all about how many I am taking at this point. But, I am wondering how long this drug will continue to work and at what point might it be wise to change to something else? What is your experience on this...and did the next drug you try work for a long term?