Final answer:
Hydrochlorothiazide (HCTZ) is a potassium-wasting diuretic used to treat hypertension.
Step-by-step explanation:
Hydrochlorothiazide (HCTZ) is a diuretic drug used to treat hypertension. It works by inhibiting the reabsorption of sodium (Na+) and chloride (Cl-) ions in the ascending limb of the loop of Henle in the nephron.
As a diuretic, HCTZ increases urination, which can lead to the loss of electrolytes, including potassium (K+). Therefore, HCTZ is considered a potassium-wasting diuretic.
Other examples of potassium-wasting diuretics include chlorothiazide (Diuril), chlorthalidone (Hygroton), furosemide (Lasix), and indapamide (Lozol).