“…This indeed may be the case. Antipyrine, aminopyrine, and related pyrazolones are commonly substituted, and we find that the same formidable list of nephrotoxic effects as seen with salicylates has in fact been encountered with the antipyrine group (Lotze, 1934;Aosima, 1940;Axelsson, 1958;Fazekas, Fazekas & Bertok, 1960;Eknoyan & Matson, 1964). The related anti-inflammatory drug phenylbutazone has similar nephrotoxic effects (Lipsett & Goldman, 1954;Steinbrocker, Neustadt & Ehrlich, 1954;Weisman & Bloom, 1955: Bruck, Fearnley, Meanock & Patley, 1954 in addition to other unpleasant effects such as agranulocytosis (see Gsell, 1954).…”