Cyclophosphoadenosine glucosamine acts to enhance myocardial contractility, improve cardiomyocyte metabolism, and improve sinus node P-cell function. Cyclophosphoadenosine glucosamine is a non-digital cardiac potentiator with positive inotropic effect, and its effects are threefold: 1. Enhance myocardial contractility, improve heart pumping function, have vasodilator effect, can reduce myocardial oxygen consumption. 2. Improve myocardial cell metabolism, protect ischemic and hypoxic myocardium. 3. It can improve the function of sinus node P cells. Therefore, the drug is suitable for heart failure, coronary heart disease, myocarditis, sick sinus syndrome, cardiomyopathy, as well as auxiliary treatment of arrhythmia. Note that the drug is prohibited and aminophylline intravenous administration at the same time, the drip speed should not be too fast, and intravenous infusion process panic, palpitations, stop using the drug in a timely manner, without the need for special treatment can be recovered on their own. Specific drugs should be used under the guidance of specialists.