It can also be taken for a long time and has no harmful effects on the body. However, this drug is not a secondary prevention drug, which can improve the symptoms of chest tightness and chest pain, as well as the tingling sensation in the precordial area, but does not slow down the progress of the disease. It can only improve the symptoms by taking this drug, so it can only be used as an auxiliary drug. If the disease is more serious, you should take drugs like aspirin, metoprolol, vancomycin, isosorbide mononitrate, which are drugs that can really slow down the progress of the disease, and Danshen Drops can be used with these drugs to improve the patient’s discomfort.