A nurse is assessing a client who is receiving gemfibrozil. The nurse should identify which of the following findings as an adverse effect of this medication?

A. "Dependent edema": Gemfibrozil, a fibrate used to reduce cholesterol levels, does not typically cause dependent edema. This is more common with conditions such as heart failure or certain other medications, but it is not a known adverse effect of gemfibrozil. B. "Muscle tenderness": Muscle tenderness, pain, or weakness is a known adverse effect of gemfibrozil. Fibrates can increase the risk of muscle damage, including myopathy, and this should be monitored closely in clients receiving the medication. C. "Tremors": Tremors are not commonly associated with gemfibrozil use. If tremors occur, other causes should be explored, but it is not a typical side effect of the medication. D. "Hyperkalemia": Hyperkalemia is not a common adverse effect of gemfibrozil. This medication typically does not affect potassium levels directly, and hyperkalemia is more associated with medications like ACE inhibitors or potassium-sparing diuretics.