of, pertaining to, or denoting a drug prescribed for a particular indication even though the drug has not yet received approval from the Food and Drug Administration for that disease, condition, or symptom.
Main Entry: off–la·bel Pronunciation: "of-"lA-b&l Function: adjective : of, relating to, or being an approved drug legally prescribed by aphysician for a purpose (as the treatment of children or of a certain disease or condition) for which it has not been specifically approved (as by the U.S. Food and Drug Administration)
l, of‑] 