Hairballs

• The best cure for hairballs is prevention. If your cats are prone to hairballs, comb them with a flea or greyhound comb several times a week, and give them a dab of Vaseline or about 1 teaspoon of melted butter every few days. If you use a commercial hairball product, be aware that most have a laxative effect and should be given several hours before or after meals.
  
  

Sudden Diet Changes

• If your cats have eaten the same food for a long time, make changes in their diet very gradually. Add a tiny bite of the new food to the old, and slowly increase the amount of the new food over a period of several days.
  
  

Food Allergies

• Some cats cannot tolerate the corn and grains found in most brands of dry food. Transition your cat to a grain-free brand; even better, switch to an all-wet food diet.
  
  

Eating Too Fast

• Cats are less likely to wolf down food and have it all come back up if they eat several small meals every day or are allowed to free-feed. You can free-feed wet food the same way you do dry.
  
  

Chronic Disease

• Diabetes, hyperthyroidism, kidney disease, pancreatitis, liver disease and inflammatory bowel disease can all cause frequent vomiting. If your cat vomits several times a week, make a vet appointment for blood tests.
  
  

Medication

• Antibiotics, thyroid medicine and pain medications can cause vomiting. If your cat's medicine is causing stomach upset, ask your veterinarian for an alternative.