Final answer:
The target dose of metoprolol in heart failure can vary, but it usually starts at 12.5-25 mg once daily and can be increased gradually. The maximum dose is 200 mg daily.
Step-by-step explanation:
The target dose of metoprolol in heart failure varies depending on the individual patient. Typically, the initial dose is 12.5-25 mg once daily. This can be gradually increased over time to a maximum dose of 200 mg daily, depending on the patient's tolerance and response to the medication.