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off-label

[awf-ley-buh l, of‐] /ˈɔfˈleɪ bəl, ˈɒf‐/
adjective, Informal.
1.
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.
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Based on the Random House Dictionary, © Random House, Inc. 2014.
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