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Tag: Constrict blood vessels

Explore our medication guides and pharmacology articles within this category.

Does phenylephrine dilate or constrict blood vessels?

4 min read
Phenylephrine primarily acts as an alpha-1 adrenergic receptor agonist, which leads to a specific physiological response. So, does phenylephrine dilate or constrict blood vessels? The answer lies in its pharmacological action, which directly impacts the muscular walls of blood vessels throughout the body.