The pressor responses to dexamfetamine in 4 hypertensive patients were increased 2- to 3-fold after 6 days of furazolidone
use, and after 13 days they had increased by about 10-fold. Furazolidone
has MAO-inhibitory activity, after 5 to 10 days of use, which is about equivalent to that of the non-selective MAOIs
Concurrent use with amfetamines
may be expected to result in a potentially serious rise in blood pressure and should therefore be avoided.