<prompt> A drug used to prevent niacin-induced flushing isParacetamolCetrizineAspirinDexamathasone  <response>: Niacin-induced flushing:Prostaglandin-mediatedAlways stas in the face and may be accompanied by skin dryness, itching, paraesthesia and headachePremedication with aspirin may allete these symptomsFlushing is subject to tachyphylaxis and often improves with timeRef: Harrison;s 18e p598 