التداخل بين بنزفيتامين وغوانفاسين

In these cases, high-dosage guanfacine was discontinued; concomitant stimulant use was also reported, which may potentially increase hypertensive response upon abrupt discontinuation of guanfacine.

If abrupt discontinuation occurs (especially with concomitant stimulant use), patients should be closely followed for rebound hypertension.

Amphetamines may decrease the hypotensive effect of antihypertensives.