Xavor-DIU tablets contain Losartan Potassium 50 mg + Hydrochlorothiazide 12.5 mg in Blister Packs of 1x10 tablets. Losartan is an Angiotensin blocker, while hydrochlorothiazide is a diuretic which provides an added antihpertensive effects for patients whose blood pressure is not controlled by losartan alone.