To care for a cat that vomits after eating, do not give it food until it has stopped vomiting for 12 to 24 hours. Check the cat's vomiting frequency, bowel movement and behavior. If vomiting continues, consult a veterinarian. If vomiting is due to regurgitation, give small meals.
If the cat does not vomit for 12 to 24 hours, give it water first followed by a bland home-cooked diet consisting of skinless chicken, rice and boiled potatoes.
If vomiting occurs only once, it is most probably an isolated episode. Regurgitation could also be a cause, particularly if it occurs soon after feeding. To decrease the risk of repeated regurgitation, give the cat small meals, and spread the food on a flat surface to reduce the speed of eating. Also, introduce new food gradually mixed with the old food.
If the cat vomits repeatedly and shows accompanying symptoms such as lethargy, blood in the vomited contents, diarrhea, dehydration, change in food and water intake habits and weight loss, it indicates the presence of an underlying health condition such as infection, gastrointestinal problems, allergies, liver or kidney failure, tumors, or neurological disorders.
In such a case, consult a veterinarian. The veterinarian may prescribe antiemetics, fluid therapy and other treatments based on the diagnosis.