Gemfibrozil, fenofibrater, andre fibrater og lipid sænkende doser (> eller svarende til 1 g/ dag) af niacin (nikotinsyre) øger risikoen for myopati, når det gives sammen med HMG- CoA reduktasehæmmere, sandsynligvis fordi de kan give myopati, når de gives alene.
Gemfibrozil, fenofibrate, other fibrates and lipid lowering doses (> or equal to 1g/ day) of niacin (nicotinic acid) increase the risk of myopathy when given concomitantly with HMG-CoA reductase inhibitors, probably because they can produce myopathy when given alone.