"i&#039;m extremely sensitive to medicine. in fact, i haven&#039;t successfully taken any medicines in 14 years. a little over a year ago, i was t-boned and i have had intense back/nerve pain ever since. i can&#039;t take anything regularly because i&#039;ll develop an allergy of sorts, but when my pain is sky high, i take a quarter of 10/325 norco and it makes all of the pain disappear (and of course i&#039;m so sensitive that it keeps the pain away for 3 days)."