Slow heart rate may be caused by arrhythmia, hypothyroidism, myocarditis, etc. It can be improved by using cardiac glycosides, thyroid hormones, diuretics and other drugs. 1. Arrhythmia: Arrhythmia can lead to slow heart rate. Cardiac glycosides such as digitalis can be used to improve the contraction and expansion function of the heart and promote faster heart rate. 2. hypothyroidism: hypothyroidism may be accompanied by slow heart rate, loss of appetite and other symptoms, you can use levothyroxine sodium tablets and other thyroid hormone drugs to improve the symptoms of hypothyroidism, improve the phenomenon of slow heart rate. 3. Myocarditis: Myocarditis can cause heart failure, resulting in slow heart rate, you can use furosemide tablets and other diuretics to accelerate the excretion of urine, reduce the burden on the heart, and promote the recovery of the heart rate. The use and dosage of the above drugs should be used under the guidance of a professional doctor. Different causes, the use of drugs are also different, we recommend that the patient to the hospital to improve the relevant examination, to clarify the cause of the slow heart rate, and follow the doctor’s instructions and active treatment.