To stop continuous vomiting, medications called antiemetics are commonly used. Generic options include Ondansetron, Metoclopramide, or Promethazine. However, because continuous vomiting can quickly lead to dehydration, it is very important to consult a doctor before taking any medication. A professional can safely determine the right dose and the underlying cause. In the meantime, once vomiting temporarily pauses, try taking small, frequent sips of water or an oral rehydration solution to stay hydrated. If you experience severe pain, high fever, or cannot keep fluids down for over 12 to 24 hours, please seek medical attention right away.