मावथाय होबथाग्राफोरआ (प्रेक्तलल आरो प्रप्रेनल) हार आरो मैखुननि नारसिनथायनि गोहोखौ खमायो आरो कारदियाक दिहुनथायखौ खमायो।
Beta blockers (practolol and propranolol) reduce the rate and force of the contraction of heart and reduce the cardiac output.