orphenadrine
/ɔːˈfɛnədriːn/Pharmacology
noun
A synthetic derivative of diphenhydramine that has antimuscarinic activity and is used as a muscle relaxant, especially in the treatment of Parkinson's disease and drug-induced parkinsonism; o-methyldiphenhydramine, (CH3C6H4)(C6H5)CH·O·CH2CH2N(CH3)2.
Origin
1950s; earliest use found in Journal of the American Medical Association. Origin uncertain; perhaps from or- + -phenadrine.