Inderide is used to treat high blood pressure, as it is a beta-blocker and a thiazide diuretic combination. The beta-blocker is quite great and works by decreasing the force of the blood within the veins and hence, it slows down the heartbeat. Thus, the heart beats more regularly and the amount of work required from the heart reduces. The thiazide diuretic works by removing excess fluid from the body and thus it helps in reducing the blood pressure. If you find yourself allergic to any ingredient or to another sulfonamide medicine then you should avoid taking Inderide. Talk to your doctor to ensure that you have the right medication and in the right quantity.