noun. a powerful vasoconstrictor used to dilate the pupils and relieve nasal congestion.
Example sentences of the word phenylephrine
Thegreenbeautyguide.com, however, does mention the phenylephrine version of the product as a dark-circle remedy.
2. Noun, singular or mass
A person with high blood pressure or an enlarged prostate should not take phenylephrine without being directed by a doctor.