Imitrex works by narrowing your blood vessels, and it can sometimes cause changes to your blood pressure. This could be dangerous during surgery.

How much does Sumatriptan raise blood pressure?

Results: Compared with placebo and expressed as weighted mean +/- SD, 100 mg sumatriptan increased aortic systolic blood pressure by 6 +/- 5 mm Hg (P < .

Can you take Imitrex with hypertension?

Blood pressure: Sumatriptan may cause an increase in blood pressure. If you have severe or uncontrolled high blood pressure, do not take sumatriptan. Drowsiness/reduced alertness: Drowsiness may occur as a result of taking this medication.