Metoprolol succinate extended-release tablets for heart failure are usually taken orally once a day, one tablet at a time, preferably in the morning before meals. Metoprolol succinate extended-release tablets, whose main ingredient is metoprolol succinate, are generally used to treat coronary heart disease, heart failure and other diseases. For heart failure, a clear diagnosis should be based on the individual situation to determine the specific dosage, in the process of increasing the dosage should closely observe the patient’s condition, to prevent the aggravation of the symptoms of heart failure, the specific dosage should be taken in accordance with the doctor’s instructions, do not blindly self-medication. For patients with class II heart failure, the recommended dosage is 23.75mg once a day for two weeks after the start of treatment, which can be increased to 47.5mg once a day after two weeks, and the dosage can be doubled every two weeks thereafter, with a target dosage of 190mg once a day for long-term treatment. For patients with stable heart failure in cardiac function classes III-IV, the recommended starting dosage is 11.875 mg once a day within two weeks of initiating therapy, which can be increased to 23.75 mg once a day after one to two weeks, and then to 47.5 mg once a day after an additional two weeks, up to a maximum of 190 mg once a day.