IPA: /ˌfɛnəˈlɛfɹɪn/
KK: /fɛnəˈlɛfɹɪn/
A medication that helps to narrow blood vessels, often used to treat stuffy noses, widen pupils, and support blood pressure during surgery.
The doctor prescribed phenylephrine to help relieve my nasal congestion.
Phenylephrine is formed from "phenyl" (from Greek "phaino", meaning to show or appear) and "ephedrine" (a compound derived from the plant Ephedra, which has stimulant properties). The word refers to a compound that shows effects similar to ephedrine, particularly in its use as a decongestant.
Think of 'phenyl' as something that 'shows' effects, and 'ephedrine' as a stimulant — together, they describe a compound that helps relieve congestion.
No commonly confused words.