Which dietary change is most important for a client taking spironolactone?

For a client taking spironolactone, reducing sodium intake is particularly critical because spironolactone is a potassium-sparing diuretic that promotes sodium excretion while retaining potassium. High sodium levels can counteract the medication's effects, leading to increased fluid retention and potentially worsening hypertension or heart failure. By reducing sodium intake, the client helps maximize the diuretic's effectiveness and minimize complications associated with fluid overload.

Additionally, clients on spironolactone need to be mindful of their potassium levels, as the medication can lead to hyperkalemia (high levels of potassium in the blood). If sodium intake is not reduced, the body might try to retain more water in response to high sodium levels, which could further elevate blood pressure and increase fluid retention. Therefore, managing sodium intake is an essential dietary change for those on spironolactone to optimize treatment outcomes and maintain a balanced electrolyte state.