How To Treat Vomiting. First treat the symptoms. One of them might work for you.

Learn how to reduce or manage stress. Eat light foods that are easy to digest. Vomiting associated with surgery radiation therapy anticancer drugs alcohol and morphine can often be treated with another type of drug therapy.
Treat infections and allergies.
Treating nausea and vomiting caused by radiation therapy. Treating Vomiting in Dogs. Once your vet determines the cause of your dogs vomiting she will tailor a treatment plan based on the cause and your dogs condition. Although nausea might disappear after vomiting in some situations.
