The side effects of Ivabradine Hydrochloride are arrhythmia, poor blood pressure control, nausea, constipation, diarrhea, etc. The medication should be used under the supervision of a physician. Ivabradine Hydrochloride is indicated for the treatment of chronic heart failure, and its possible side effects include cardiac arrhythmias such as atrial fibrillation, poor blood pressure control, nausea, constipation, diarrhea, edema, rash, itching, muscle spasms, weakness, fatigue, creatinine elevation, and dyspnea. Its exact occurrence and severity are related to the individual. This drug is contraindicated in cases of resting heart rate below 70 beats/min, acute myocardial infarction, cardiogenic shock, severe hypotension, severe hepatic insufficiency, sick sinus syndrome, unstable angina pectoris, acute heart failure, and pacemaker-dependent individuals. The use of medication must be evaluated and guided by a physician, and if there are any symptoms of discomfort after taking the medication, it is necessary to stop the medication and consult a doctor.