anxiolytic vs xylazine

anxiolytic

noun
  • A drug prescribed for the treatment of symptoms of anxiety. 

adj
  • That reduces anxiety; tranquilizing 

xylazine

noun
  • A potent α₂-adrenergic agonist used for sedation, anesthesia, and analgesia in large mammals; it is also misused as an adulterant in street drugs. 

How often have the words anxiolytic and xylazine occurred in a corpus of books? (source: Google Ngram Viewer )