Chlorthalidone is not as commonly used as similar medicines, but its use is increasing. Chlorthalidone is in a group of high blood pressure medicines called thiazide diuretics (or water pills). Hydrochlorothiazide (HCTZ) is currently the most commonly used one.
However, chlorthalidone is being used more often now than in the past. The number of people using chlorthalidone has doubled in the last few years. This is because studies show that chlorthalidone may be better at lowering blood pressure and at preventing strokes and heart disease compared to hydrochlorothiazide. Because of this, many experts believe chlorthalidone may be a better choice.
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