Wiktionary
oxilofrine
n. An amphetamine stimulant drug.
Wikipedia
Oxilofrine
Oxilofrine (also known as methylsynephrine, hydroxyephrine, oxyephrine, and 4-HMP) is a stimulant drug and is an amphetamine chemically related to ephedrine and to synephrine.
Oxilofrine is currently a WADA prohibited substance when used in competition. It is an ingredient found in some dietary supplements.