"i developed severe lower back nerve pain which became almost intolerable and severely limited range of motion could barely walk. i was prescribed tylenol 3, 2 tablets every 4 hours; the first day it worked great but then next day i was vomiting and became severely constipated, doctor switched me to celebrex which did little for the pain. trying the tylenol with stool softener, drinking more water hoping i don&#039;t get nauseated."