Investigation of rociverine + dipyrone for antispasmodic and analgesic interactions

The study was designed to elicit any interference on the part of dipyrone with the antispasmodic activity of 2-(diethylamino)-1-methylethyl cis-1-hydroxy(bicyclohexyl)-2-carboxylate (rociverine) and on the part of rociverine with the analgesic activity of dipyrone. No evidence of any reciprocal inhibition of the specific pharmacodynamic activities of the two drugs emerged. Further, dipyrone exerted remarkable antispasmodic effect which in some experimental conditions supplements that of rociverine. The nature of this antispasmodic effect contributed by dipyrone could not be identified from the in vivo work, though in in vitro tests dipyrone revealed appreciable antihistaminic activity and weak muscle-relaxant activity. The value of an association in which neither activity is diminished and one is actually augmented is obvious.