Emigo 4 MG Injection belongs to the antiemetics drug group that is used for treating nausea as well as vomiting, caused by other medical treatments such as surgery, chemotherapy and radiation. This medicine will block the chemical serotonin from releasing in your gut and your central nervous system. This will prevent vomiting and nausea. Emigo 4 MG Injection is available in four different forms that can be taken orally; tablet, disintegrating (dissolving) tablet, solution and film. It also comes in an IV (intravenous) form that can be injected to your body by a doctor. You can take it with food or without food.