Oxprenolol hydrochloride is primarily used in the treatment of cardiovascular conditions. It is effective in managing hypertension by reducing blood pressure, which helps prevent complications such as strokes and heart attacks. Additionally, it is prescribed for angina pectoris to alleviate chest pain by decreasing the heart's workload and improving blood flow. The compound is also utilized in controlling certain types of arrhythmias, helping to stabilize irregular heartbeats. In some cases, it is administered to manage symptoms of anxiety, particularly those related to physical manifestations like rapid heartbeat. Its beta-blocking properties make it a versatile option in various therapeutic applications.