How do beta blockers work?

Effect on heart: Cardioselective beta blockers slow down heart beat and cardiac output.Nonselective have other effects also .Some cause peripheral vasodilatation.Help in lowering blood pressure, congestive failure and protect heart and prevent myocardial infarction.

Block adrenaline: They block the effect of adrenaline on the heart and blood vessels; they lower the heart rate and blood pressure and they allow to the heart work less.

Beta blockers: Beta blockers interfere with the binding of epinephrine to the beta receptors and weaken the effects of stress hormones. They are often used to treat high blood pressure, abnormal heart rhythms and prevent heart attacks.

They block: you body's natural tendency to speed up your heart rate increase your blood pressure when you need more oxygen to tissues for whatever reason. Depending on the particular drug-This is why they work well for Hypertension and Anxiety.

See below: Debbie, Beta blockers act on the epinepherine (adrenaline) receptor. They block it, stopping the epi from attaching to it. The functional result is that they act to slow your heart rate and lower your blood pressure. They are excellent blood pressure medicines if you need them. Hope this helps!