It is necessary to determine the cause of the dog's vomiting and then treat it with medication to prevent the misuse of medication from aggravating the condition. Common causes of vomiting in dogs include foreign bodies, food problems, parasites, etc. If the vomiting is caused by a foreign body, it is recommended to take a radiograph to determine the location of the foreign body and then remove it. If your dog eats expired, spoiled or cold food, you can feed it an appropriate amount of probiotics to help regulate the gastrointestinal environment. If a parasitic infection is the cause, immediate deworming is required.