what does a beta blocker do to your kidneys
Beta-blockers lower your blood pressure by blocking the effect of hormones called adrenaline and Â­noradrenaline. By blocking these hormones, beta-blockers slow down your heart rate and reduce the force at which blood is pumped round your body. Beta-blockers also block your kidneys from Â­producing a hormone called angiotensin II. Reducing the amount of angiotensin in your body allows your blood vessels to relax and widen, making it easier for blood to flow through. Beta-blockers are not usually used as a first choice medicine for high blood pressure.