"i take 2 norco 10/325 every morning with 800mg ibuprofen for lower back pain due to 2 herniated discs from an injury in 2005. they are only partially effective. i have built up a tolerance to pain medicines. even during radio surgery, the sedation i was given did very little. my doctor just gave me morphine to use at night to help me sleep, but i am allergic to sulfur and the drug is actually called morphine sulfate. i am afraid to take it because of the potential side effects(hives). i&#039;m waiting for authorization for disc replacement surgery, so hopefully i won&#039;t need pain medicines in the future."