Olmesaar 20 Tablet is a blood pressure reducing medicine from Roche. It is used to treat patients with high blood pressure and heart failure. Olmesaar lowers your blood pressure, which helps prevent future heart attacks and strokes. Olmesaar also prevents damage to the kidneys in patients with diabetes. If you use Hydrochlorothiazide, Your blood pressure will return to a safer level. It will help you to get rid of swelling from fluid overload, which may be caused by heart, liver, kidney, or lung disease.