Rhabdomyolysis and acute renal failure due to combination therapy with simvastatin and warfarin.

Mogyorósi, A; Bradley, B; Showalter, A; Schubert, M L · J Intern Med · 1999

case_report · Level V

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Abstract

Simvastatin, an inhibitor of 3-hydroxy-3-methylglutaryl coenzyme A (HMG-CoA) reductase, is widely used to treat hyperlipidaemia. Although myalgias are recognized adverse effects, clinically significant elevations in serum creatine phosphokinase (CPK) levels are uncommon. We describe a case of rhabdomyolysis and acute renal failure associated with concomitant use of simvastatin and warfarin. Rhabdomyolysis and renal failure occurred 7 days after warfarin (5 mg day-1) was added to a chronic stable dose of simvastatin (20 mg day-1) and resolved abruptly after discontinuation of simvastatin. We recommend careful monitoring when warfarin is given to patients receiving simvastatin.

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