Potentially Fatal Interaction between Diltiazem and Statins

  1. Patrick Gladding, MBCHB, BHB;
  2. Helen Pilmore, MBCHB, FRACP, MD; and
  3. Colin Edwards, MBBCH(WITS), FCP(SA), FRACP
  1. From Auckland Healthcare Services Ltd., Grafton, and North Shore Hospital, Takapuna, Auckland, New Zealand.

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    TO THE EDITOR:

    Background: The interaction of diltiazem and statins, metabolized through cytochrome P450 3A4, leads to increased risk for rhabdomyolysis.

    Objective: To describe the interaction between diltiazem and simvastatin–atorvastatin and highlight its clinical significance.

    Case Reports: In case 1, a 59-year-old woman receiving long-term ambulatory peritoneal dialysis because of diabetes-induced renal failure presented with an ischemic toe. …

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