Introduction Vomiting is one of the body’s strongest protective reflexes. While uncomfortable and often alarming, it serves as a defense mechanism to remove harmful substances from the stomach or respond to signals from the brain. Many factors—such as infections, motion sickness, pregnancy, migraines, and medications—can trigger this response. Although vomiting can be helpful in certain situations, stopping or reducing it is important when it becomes excessive, causes dehydration, or significantly affects daily functioning. This article explains why vomiting happens, how the vomiting reflex works, common triggers, signs it is safe to try to stop it, and evidence-based ways to reduce…