Hypertrophic cardiomyopathy can not use the following drugs: First, hypertrophic cardiomyopathy can not use cardiac drugs, cardiac drugs can enhance myocardial contraction, and patients with hypertrophic cardiomyopathy, once the increase in myocardial contraction, may aggravate the left ventricular outflow tract obstruction, may aggravate the disease, so all cardiac drugs should not be used, such as digoxin, Sidilan and other drugs, can not be used; Second, hypertrophic cardiomyopathy can not be used to increase the Heart rate drugs, because patients with hypertrophic cardiomyopathy have a faster heart rate, if they take drugs that increase the heart rate will aggravate the condition, such as some Chinese medicine that can increase the heart rate, can not be used; third, patients with hypertrophic cardiomyopathy, can not use nitrate drugs, because it will reduce the left ventricular volume, can make the murmur enhanced.