Veterinarians may recommend treatments for constipated cats that include laxatives, professionally administered enemas, manual evacuation and a high-fiber diet, according to the ASPCA. Veterinarians also recommend adding fiber to a cat's diet through canned pumpkin or bran cereal.
Veterinarians sometimes recommend increasing a cat's water consumption and exercise to help treat feline constipation, according to the ASPCA. If a cat is taking medications that are linked to constipation, the veterinarian is likely to recommend replacing or discontinuing those medications, according to petMD. If dietary supplements, such as pumpkin and bran cereal, do not work, veterinarians often recommend a low-residue-producing diet.