出典:Wiktionary
出典:『Wiktionary』 (2025/10/17 15:44 UTC 版)
Blend of phenyl + epinephrine.
phenylephrine (usually uncountable, plural phenylephrines)
出典:Wikipedia
出典:『Wikipedia』 (2011/06/22 16:34 UTC 版)
Phenylephrine is a selective α1-adrenergic receptor agonist used primarily as a decongestant, as an agent to dilate the pupil, and to increase blood pressure. Phenylephrine has recently been marketed as a substitute for pseudoephedrine (e.g.,Sudafed (Original Formulation)), but there are claims that oral phenylephrine may be no more effective as a decongestant than a placebo (see questions about effectiveness below).