Potentiating Effect of Iproniazid on Action of Some Sympathicomimetic Amines.

Abstract
Several sympathicomimetic amines produce convulsions in guinea pigs. Pretreatment with 1-isonicotinyl-2-isopropyl hydrazine (iproniazid) potentiates the effect of phenylethylamine and tyramine, but not of ephedrine and alpha-methylphenylethylamine. Isoniazid is less effective. The onset of the toxic syndrome is accompanied by a marked increase of body temperature. The results are explained by the blocking of monoamine oxidase by iproniazid.