The story
Blend of mapro- (of unknown origin) + amitriptyline.
Etymology from Wiktionary, CC BY-SA 4.0.
Today it means: A tetracyclic antidepressant with properties similar to those of tricyclic amitriptyline, usually administered orally as the hydrochloride; 3-(9,10-dihydro-9,10-ethanoanthracen-9-yl)propyl(methyl)amine, C₂₀H₂₃N. Full definition →
Blend of mapro- (of unknown origin) + amitriptyline.
Etymology from Wiktionary, CC BY-SA 4.0.