Vomiting from a concussion generally gets better in most people within a week. Of course, it can also last for different periods of time depending on the injury and the individual’s tolerance. Some people have no vomiting symptoms straight away, while others may also be hospitalized because they cannot eat and have electrolyte disturbances due to vomiting. There are many measures available to relieve the symptoms of vomiting, such as treatment with oral or intramuscular metoclopramide. If the vomiting is really severe, it is important to review the head CT to exclude the possibility of delayed cerebral hemorrhage. Intravenous medications, such as granisetron, can be used to control vomiting and can also provide effective relief. And it is very important to ensure sufficient sleep to give the brain sufficient rest time.