Complex sentence: Orphenadrine (Norflex ®) is an anticholinergic drug belonging to the ethanolamine class of antihistamines invented in 1951 in France and made in the United States and Canada by Parke-Davis and other companies including 3M.
Split into simpler sentences: Orphenadrine (Norflex ®) is an anticholinergic drug belonging to the ethanolamine class of antihistamines. This drug was invented in 1951 in France and made in the United States and Canada by Parke-Davis and other companies including 3M.