Arbaval 40 Mg 28 Tab is used to treat high blood pressure. Valsartan works by blocking the activity of certain natural substances which tightens the blood vessels. Thus, the blood flows more smoothly, and the heart pumps more efficiently. Hydrochlorothiazide works by prompting the kidneys to pass the unneeded salt and water from the body into the urine. also be used together with other medicines to treat certain conditions as recommended by the doctor. It is used in combination with other Anti-Hypertensive to treat high blood pressure. A valid prescription should be available upon delivery