Robert H. Knopp, MD
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To the Editor: I read with interest the recent report by Mullin and associates (1) on fulminant hepatic failure in a patient after ingestion of sustained-release nicotinic acid. Development of toxicity when switching suddenly from crystalline niacin to time-release niacin is not surprising. In addition to the early observation by Christensen (2), we observed greater gastrointestinal upset and fatigue and slightly greater serum glutamicoxoacetic transaminase (SGOT) rise in a randomized trial (3) comparing unmodified niacin (Nicolar [Roer Pharmaceuticals, Ft. Washington, Pennsylvania]) with time-release niacin (Nicobid [Roer]). The syndrome of fatigue, gastrointestinal upset, and elevations in liver enzymes was particularly notable
Knopp RH. Niacin and Hepatic Failure. Ann Intern Med. 1989;111:769. doi: https://doi.org/10.7326/0003-4819-111-9-769
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Published: Ann Intern Med. 1989;111(9):769.
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