A fast heartbeat the day after drinking alcohol can be treated through rest, diet and medication. 1. Rest: Proper rest can promote the metabolism of alcohol, thus relieving the symptoms of rapid heartbeat caused by alcohol consumption. 2. Diet: Drinking warm water can dilute the concentration of alcohol in the body and accelerate the metabolism of alcohol, thus relieving the symptoms. 3. Medication: If you can’t get relief from the above methods and still have panic attacks, you can apply beta-blockers such as metoprolol under the guidance of your doctor to inhibit sympathetic nerve excitation. Alcohol consumption is harmful to the body, and large amount of alcohol consumption can lead to the occurrence of many diseases such as acute pancreatitis, which should be avoided as much as possible. If the symptoms of fast heartbeat cannot be relieved, you should seek medical advice and treatment according to the doctor’s instructions.