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bu·pro·pi·on | \ byü-ˈprō-pē-ˌän, -ən 
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\Medical Definition of bupropion
: a drug administered in the form of its hydrochloride C13H18ClNO·HCl as an antidepressant and as an aid to stop smoking usually without the side effects of depressed libido and weight gain — see wellbutrin, zyban
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