Purina Pro Plan Veterinary Diets OM Overweight Management Formula Dry Cat Food

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16-lb bag
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This prescription item requires vet approval. Details


Purina Pro Plan Veterinary Diets OM Overweight Management Feline Formula delivers a diet-friendly cat food that is low in fat and calories yet high in fiber and protein. This formula provides balanced nutrition for safe and effective weight loss. It offers dietary benefits that provide optimal nutrition while meeting your adult cat's special needs.

Key Benefits

  • The Association for Pet Obesity Prevention estimates that over half of cats in the US are overweight or obese. Excessive weight can lead to diabetes, aggravate joint disease, and even shorten life span.
  • Purina Pro Plan Veterinary Diets OM has been specifically formulated to help your cat loose extra weight while maintaining muscle mass.
  • It's low in calories and fat which helps promote weight loss and it's also high in protein so that your cat keeps lean body mass. High fiber levels help to keep your cat full and satisfied.
  • This highly palatable food has been designed for cats that suffer from obesity, constipation, fiber responsive colitis, hyperlipidemia, and diabetes.
  • Made in the USA!


Use only as directed by your veterinarian. Product not intended for ruminants or livestock.

Note: Purina Pro Plan Veterinary Diets require a veterinary prescription. This product will not be shipped until a copy of a valid prescription authorization is faxed to 1-800-619-7973 or e-mailed to rx@chewy.com.

See all items by Purina Pro Plan Veterinary Diets

  • Item Number
  • Weight
    16.0 pounds
  • Brand
  • Food Form
    Dry Food
  • Lifestage
  • Made in
    United States
  • Special Diet
    High-Protein, Prescription Food, Weight Control

Nutritional Info


Corn Gluten Meal, Wheat Gluten, Soybean Meal, Poultry By-Product Meal, Oat Fiber, Soy Protein Isolate, Brewers Rice, Fish Meal, Powdered Cellulose, Animal Fat Preserved with Mixed-Tocopherols (Form of Vitamin E), Phosphoric Acid, Animal Liver Flavor, Calcium Carbonate, Potassium Chloride, Salt, Choline Chloride, L-Lysine Monohydrochloride, Vitamin E Supplement, Taurine, Zinc Sulfate, Ferrous Sulfate, L-Ascorbyl-2-Polyphosphate (Source of Vitamin C), Manganese Sulfate, Niacin, Vitamin A Supplement, Calcium Pantothenate, Thiamine Mononitrate, Copper Sulfate, Riboflavin Supplement, Vitamin B-12 Supplement, Pyridoxine Hydrochloride, Folic Acid, Vitamin D-3 Supplement, Calcium Iodate, Biotin, Menadione Sodium Bisulfite Complex (Source of Vitamin K Activity), Sodium Selenite.

Caloric Content

3,240kcal/kg, 321 kcal/cup

Guaranteed Analysis
Crude Protein 50.0% min
Crude Fat 6.0% min
Crude Fat 10.0% max
Crude Fiber 8.0% max
Moisture 11.0% max
Ash 7.5% max
Calcium 0.9% min
Phosphorus 0.85% min

Feeding Instructions

The following feeding program is recommended as a guideline only, with discretionary clinical adjustments for proper weight maintenance.

Weight Adult Maintenance Daily Feeding (Cups) Adult Weight Loss Daily Feeding (Cups)
6 - 8 lbs 1/2 - 2/3 1/3 - 1/2
9 - 12 lbs 2/3 - 1 1/2 - 3/4
13 - 16 lbs 1 - 1 1/3 3/4 - 1
17 - 20 lbs 1 1/3 - 1 2/3 1 - 1 1/3
21 - 25 lbs 1 2/3 - 2 1/8 1 1/3 - 1 3/4

Provide adequate fresh water in a clean container for your pet daily. For your pet’s health, see your veterinarian regularly.

Transition Instructions

With your veterinarian’s approval, offer increasing amounts of the new food with decreasing amounts of the old food.

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Customer Reviews

49 reviews 49 Reviews 4.8 out of 5 Stars

96% Recommend

96% of reviewersrecommend this product

4.8 / 5
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  • Great Option for pudgy kitties!

    By on

    My chubby fur-baby just started on this diet, so it will take time to see improvement, but so far, she seems to really enjoy the taste and seems to be satiated for longer! I look forward to seeing results for her!

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  • Great nutrition for round kitties =^.^=

    By on

    My two kitties were a little "rotund" when I adopted them. (They don't like being called fat. Lol) We tried all kinds of specialty foods and then our vet recommended Purina OM. Although my cats are not picky, they really like the taste. They are able to get in enough to get the daily nutrients they need and stay healthy while finally attaining a more desired weight. The vet is happy and my cats are happy. Chewy.com sells it a little cheaper than the vet so we just started ordering it from them because we love their service. It literally came the next day.

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  • Better than expected

    By on

    My cat has been eating the canned OM formula for several years and, recently due to the extreme odor of her discharges, we decided to let her try the dry formula. She now craves for the dry more than the wet. Both she and I are very happy about the change.

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  • Fat cat will eat it

    By on

    My big guy is adjusting to portion control. Both of my indoor cats eat this food without stomach upset and seem content when their bowls are empty.

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  • Best price I can find

    By on

    After checking with our vet's office, their mail order pharmacy, and Chewy beat both of them!

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  • Fast and Quick

    By on

    We normally buy our food from our vet but it keeps going up and up. So we opted to have our vet approve Chewy to ship. Price is lower and delivery is great. Will make other purchases. Recommend!

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  • Finally a food that doesn't go straight to my hips!

    By on

    I was a rather plump girl with a very upset tummy when my vet suggested I try OM. Finally a food that doesn't cause me serious gastric distress! I am slim and trim and able to run and play again. My behind used to feel like it was nailed to the ground but now I am leaping to new heights!!

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  • Only had product a week

    By on

    I've only had the food one week - I've blended it with the Purina Pro Plan Turkey Indoor that my cats ate before and they are eating it fine - after a few weeks I will go to just Purina OM. Time will tell if it takes off the weight.

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  • My cat finally lost weight!

    By on

    My cat must have tried ten different foods and combinations of food. Nothing. I was so frustrated. Then Purina came out with this food and finally he has started to lose weight. The vet said it will take him a long time to lose the six pounds he needs to lose so I will try to be patient. Don't look at the ingredients as they are not what one would think are good but the results are worth it.

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  • Good taste and results.

    By on

    My cat was really overweight and had matted hair. Since using this product, his weight has dropped, he likes it, and his coat has improved with no more mats. He is also finicky so it is especially important that he likes the product. And he does.

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