Metoz is a thiazide diuretic (or, rather, a thiazide-like diuretic because it acts similarly to the thiazides but does not contain the benzothiadiazine molecular structure) marketed under the brand names Zaroxolyn and Mykrox. It is primarily used to treat congestive heart failure and high blood pressure. Metoz indirectly decreases the amount of water reabsorbed into the bloodstream by the kidney, so that blood volume decreases and urine volume increases. This lowers blood pressure and prevents excess fluid accumulation in heart failure. Metoz is sometimes used together with loop diuretics such as furosemide or bumetanide, but these highly effective combinations can lead to dehydration and electrolyte abnormalities. Metoz helps to keep your blood pressure under control. Metoz is also used to treat water retention caused by heart, liver or kidney disease. Water retention may be noticed as swelling of the feet, ankles, lower leg and hands. For this reason, it is commonly known as a "water pill". Metoz may also be used to treat other medical conditions, as decided by your doctor.