phenylephrine hydrochloride (NeoSynephrine, Neofrin)

What is phenylephrine-injection, and how does it work (mechanism of action)?

Phenylephrine is a man-made drug that stimulates receptors (alpha1 receptors) on blood vessels and cause blood vessels to constrict (vasoconstriction). It is a vasoconstrictor medication, structurally similar to epinephrine and ephedrine. Vasoconstriction increases blood pressure. Phenylephrine increases blood pressure and heart rate without affecting heart rhythm.

What brand names are available for phenylephrine-injection?

NeoSynephrine, Neofrin

Is phenylephrine-injection available as a generic drug?


Do I need a prescription for phenylephrine-injection?


What are the side effects of phenylephrine-injection?

Side effects of phenylephrine are headache, reflex bradycardia (slow heart beat), excitability, anxiety, restlessness, high blood pressure, and rarely abnormal heart beats.

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