What is the primary use of Metoprolol?

Metoprolol is primarily used to reduce heart rate during conditions such as myocardial ischemia. This medication is a beta-blocker, which works by blocking the effects of adrenaline on the heart, leading to a decrease in heart rate and blood pressure. This reduction in heart rate helps to decrease the workload on the heart, making it particularly beneficial for patients who are experiencing ischemic heart conditions.

By lowering the heart rate, Metoprolol helps to improve oxygen delivery to the heart muscle, which can alleviate symptoms of angina and minimize further damage in situations where the heart is not receiving adequate blood flow due to narrowed arteries. This therapeutic effect is critical in managing heart-related issues and preventing complications related to myocardial ischemia.

The other options provided do not align with the primary therapeutic actions of Metoprolol, which is why they are not relevant in this context.