Rhabdomyolysis in the Setting of Concomitant Use of Tafamidis, Atorvastatin, and Amiodarone

An 85-year-old women with transthyretin cardiac amyloidosis presented with generalized weakness, elevated liver function test levels, and creatinine kinase consistent with rhabdomyolysis 1 week after starting tafamidis. She was already taking atorvastatin and amiodarone, raising the possibility of a drug–drug interaction inhibiting the breakdown and excretion of atorvastatin, causing drug-induced rhabdomyolysis. (Level of Difficulty: Intermediate.)