Definition: A synthetic polymer consisting mainly of linear 1-vinyl-2-pyrrolidone groups, with mean molecular weights ranging from 10,000–70,000; used as a dispersing and suspending agent; povidone with between 20,000–40,000 molecular weight has been used as a plasma extender. It is not metabolized, but is excreted unchanged by the kidney.
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Examples: glitazone, GI cocktail, etc.