phenylephrine
noun
phen·yl·eph·rine
ˌfe-nᵊl-ˈe-ˌfrēn 
-frən
: a sympathomimetic agent C9H13NO2 that is used in the form of its hydrochloride as a vasoconstrictor, a mydriatic, a nasal decongestant, and by injection to raise the blood pressure
Examples of phenylephrine in a Sentence
Recent Examples on the Web
These can potentially interact with phenylephrine or pseudoephedrine as well.
—
Alex Yampolsky, Verywell Health, 3 Mar. 2025
Certain people should avoid taking phenylephrine, pseudoephedrine, or both.
—Alex Yampolsky, Verywell Health, 3 Mar. 2025
Few contained oral phenylephrine, perhaps because manufacturers privately questioned its effectiveness.
—Randy Hatton, Scientific American, 21 Dec. 2023
Nasal sprays containing phenylephrine are also a good way to manage congestion—but Dr. Johnson advises against using them for more than a few days to avoid becoming dependent on them.
—Ashley Abramson, SELF, 12 Feb. 2025
See All Example Sentences for phenylephrine
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Alex Yampolsky, Verywell Health, 3 Mar. 2025
Certain people should avoid taking phenylephrine, pseudoephedrine, or both.
—Alex Yampolsky, Verywell Health, 3 Mar. 2025
Few contained oral phenylephrine, perhaps because manufacturers privately questioned its effectiveness.
—Randy Hatton, Scientific American, 21 Dec. 2023
Nasal sprays containing phenylephrine are also a good way to manage congestion—but Dr. Johnson advises against using them for more than a few days to avoid becoming dependent on them.
—Ashley Abramson, SELF, 12 Feb. 2025
See All Example Sentences for phenylephrine
Cite this Entry
“Phenylephrine.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/phenylephrine. Accessed 26 Mar. 2025.
Copy CitationMedical Definition
phenylephrine
noun
phen·yl·eph·rine
ˌfen-ᵊl-ˈef-ˌrēn, -rən
: a sympathomimetic agent with vasoconstrictive properties that is used in the form of its hydrochloride C9H13NO2·HCl especially as a nasal decongestant and mydriatic and to raise blood pressure
Note: Trademarks for preparations containing phenylephrine include Actifed and Neo-Synephrine.
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