As anyone who has been on perscription amphetamines know, it causes constriction of the blood vessels.

Again, these entanglements can cause constriction of blood flow.

The sympathetic response activates alpha-1 adrenergic receptors, causing constriction of the body's arteries.

There are also neurones which cause constriction of the walls of the blood-vessels.

This gas irritates the lungs, causing spasms and constriction of the airways.

Isometheptene is a vasoconstrictor, a drug that causes constriction (narrowing) of cerebral blood vessels.

Hypertension can adversely affect a fetus by causing constriction of the placental artery.

Certain drugs cause constriction of the pupils, such as alcohol and opioids (citation needed).

Tetrahydrozoline causes constriction (narrowing) of blood vessels in the eyes.

In high blood concentrations, it causes mild constriction of rabbit pulmonary arteries.