Motrin IS ibuprofen.
What sort of inflamation are you talking about? I was prescribed 1600 millagrams of ibuprofen a day when I was about 13. My liver functions had to be checked every three months and I cintinued using it all the way through high school. I never had any liver or stomach problems, but it lost its effectivness. I LOVED Vioxx, but now use Celelbrex. I still occasionally pop an ibuprofen, but the standard dose.