Is norflex (orphenadrine) addicting?

Yes it may be: Is a muscle relaxant.It works by blocking nerve impulses that are sent to the brain. Norflex (orphenadrine) has euphoric effects. Therefore, potential addiction or habit-forming is a good possibility. The medicine should be used only by the person it was prescribed for. The mood elevating effects may occur even at therapeutic doses of the drug.

Would find in many cases, it could be habituating, and usually not addictive in the sense of classical withdrawal, but could be a problematic drug if used chronically.