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Caffeine has vasoconstrictor properties, meaning it causes blood vessels to squeeze together, which can briefly raise heart rate.

Slowly, Zuñiga’s numbers began to recover as the ventilator and vasoconstrictors did their work.

Afrin is basically neosynephrine, a potent vasoconstrictor, and would be ideal to put on a tissue stuffed deeply in the nose.

You turn the bed lamp on, open a book: vasoconstrictor and barbiturate make words in oval light reverberate.

The first such drugs, called ergotamines, were powerful vasoconstrictors derived from the ergot fungus, which grows on rye and other grains and led to mass poisonings in the Middle Ages.