an antianxiety agent (trade name Xanax) of the benzodiazepine class
"The doctor prescribed xanax to help manage her severe anxiety symptoms as a benzodiazepine antianxiety agent."
A brand name for alprazolam.
"The doctor prescribed xanax, which is a well-known brand name for alprazolam, to help manage his severe anxiety attacks."
Xanax is a brand name created by the pharmaceutical company Pfizer to market the drug alprazolam. The word was invented specifically as a trademark rather than evolving from an older root or meaning.