Medical Definition of acetylator
: an organism that acetylates a substance during metabolism—used especially to describe the rate at which a person acetylates certain drugs (such as isoniazid, hydralazine, or sulfamethazine) in the body <People known as slow acetylators, for instance, take a longer time than fast acetylators to clear certain drugs from the liver.—Robin Marantz Henig, The New York Times, 10 Oct. 2004> ◆The variation among acetylators has been shown to be genetically determined. Slow acetylators may experience undesirable side effects resulting from higher drug concentrations in the body.
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