Anti emetics are typically used to treat motion sickness and the side effects of analgesics, general anesthetics and chemotherapy directed against cancer. They can be used for severe cases of gastroenteritis, especially if the patient is dehydrated. There are several Anti emetics online that can be purchased from the Online Pharmacy such as Emeset, Pantaloc and Vomistop. Migraine is the neurological syndrome of headaches, body perceptions and nausea. It is a French word derived from two words. The Greek word called hemicrania means half skull, and the English word megrim means severe headache. The very common type of migraine is a headache. Common symptoms of this include photophobia, vomiting and nausea and. An anti emetic is a drug that is effective against vomiting and nausea.