Phenylephrine
| Overview |
|---|
- Phenylephrine is a synthetic direct adrenergic agonist which can be thought of as a selective for alpha1 receptors. Rarely used intravenously, the compound causes profound vasoconstriction, increased systemic vascular resistance, and in turn reflex bradycardia. Much more commonly, the potent vasoconstrictive properties of phenylephrine are used topically as a nasal decongestant.