[header] How to help a cat not throw up [title] Check when your cat was last dewormed. [step] An infestation of worms, such as tapeworms, can cause your cat to vomit. By deworming your cat, you will be able to either stop the vomiting from occurring, or at least rule out this as a cause. 
[substeps] Deworm your cat more often-once a month at minimum-if they are allowed to hunt. If your cat is behind on their deworming, get them up to date.