Metolazone Pharmacology

Metolazone (Zaroxolyn) is a thiazide-like diuretic. It promotes the loss of water and sodium through the kidney.

The most common indication I see metolazone used for is for additional fluid loss in heart failure.

Potassium must be monitored as it can cause significant hypokalemia which is exacerbated when metolazone is used in combination with loop diuretics.

Hyperuricemia is a potential adverse effect with metolazone; this is critical to monitor for in patients at risk for gout attacks.

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