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

Prescription Item

  • Price:

    $66.99 FREE 1-2 Day Shipping on this item

In stock
16-lb bag
  • 6-lb bag
  • 16-lb bag

This item requires prescription approval. Details

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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.

Prescription Approval

This product requires a veterinary prescription. Simply provide your vet's information during checkout and we'll follow up to confirm. If you have a copy of your prescription, you can expedite the approval process by taking a photo and emailing it to vetdiet@chewy.com, or by faxing it to 1-800-619-7973.

  1. How To Order

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 Protein50.0% min
Crude Fat6.0% min
Crude Fat10.0% max
Crude Fiber8.0% max
Moisture11.0% max
Ash7.5% max
Calcium0.9% min
Phosphorus0.85% min
Feeding Instructions

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

WeightAdult Maintenance Daily Feeding (cup)Adult Weight Loss Daily Feeding (cup)
6 - 8 lbs1/2 - 2/31/3 - 1/2
9 - 12 lbs2/3 - 11/2 - 3/4
13 - 16 lbs1 - 1 1/33/4 - 1
17 - 20 lbs1 1/3 - 1 2/31 - 1 1/3
21 - 25 lbs1 2/3 - 2 1/81 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.


Why should I buy Vet Diet food online?

Shopping for Vet Diet food is easy! Chewy experts are available 24/7 to answer your questions and guide you through the process. We offer competitive prices, free shipping on orders over $49, and more savings if you sign up for an Autoship subscription.

How do I order Vet Diet food?

  1. Search our website for the diet your vet recommends, then add it to your cart. You can purchase your Vet Diet food with any other goodies you need!
  2. At checkout, you’ll be asked for required information. Enter your pet’s name and type your vet’s name and telephone number.
  3. Place your order, and we’ll take care of the rest!

How will you contact my vet?

Our Vet Diet team will personally contact your vet for approval. If your clinic needs more information from you or recommends a different diet, we’ll let you know immediately.

Does it help if I send you my prescription?

Yes! If you have a paper copy of your prescription, email a picture to vetdiet@chewy.com, start a chat, or fax your prescription to 1-800-619-7973.

Can I use a prescription written by a veterinarian out of state?

Of course! We can accept valid prescriptions from anywhere in the United States and Canada—that includes US territories, like Puerto Rico.

Why do I need a prescription?

Veterinary diets are formulated with the precise ingredients and nutrients needed to address specific medical issues. If you don’t have a paper prescription, no sweat—once you provide your vet’s information, our team will take over.

Can someone else (such as a caretaker or family member) place an order for my pet?

Yes, but we’ll need them to provide us with your full name or the pet’s owner’s name via phone, email or chat after the order is placed, so the clinic can locate your pet’s records when we contact them.

How can I help expedite my order?

Just follow these simple steps: 1. Create your pet ’s profile on Chewy.com. 2. If you have an Autoship scheduled, but you’re running low on refills, contact us ahead of time to let us know if you have a new clinic or if any prescription information has changed. 3. If you have a prescription handy, send it to us before you order—by sending an email to vetdiet@chewy.com, starting a chat with one of our experts, or faxing us at 1-800-619-7973.

Do I need to set up a pet profile?

We recommend it, but it’s not required. You can create your pet’s profile by logging in at Chewy.com, hovering over your account, and choosing “pet profile.”

Do prescriptions expire?

Yes. Your vet will tell us when your prescription will expire and how many refills we can send before they’d like you to check back in with them.

Can I set up auto refills?

Yep! Sign up for Autoship and we’ll automatically ship your food for as long as your prescription allows. If you run out of refills, or your prescription expires, we’ll automatically contact your vet for a new approval. If we hit any bumps in the road, we’ll let you know right away.

What if I have more questions? How can I reach the Vet Diet team at Chewy?

Email us at vetdiet@chewy.com, start a chat on Chewy.com, or call us anytime at 1-800-672-4399. We’re here for you 24/7.


Customer Reviews

84 Reviews 84 Reviews 4.7 out of 5 Stars

95% Recommend

95% of reviewersrecommend this product

4.7 / 5

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84 Reviews

Showing 1-10 of 84 Reviews

  • 4 out of 5 stars

    Vet wanted my kitty to have this

    By on

    I don't know about the ingredients it has corn gluten meal & other stuff that I have never fed her. She always received "real" food without all that crap. But I am giving it a go because my vet says so. It has 4 stars for Chewy's price.

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  • 5 out of 5 stars

    Best food yet.

    By on

    I noticed my cat was having trouble going to the bathroom. Since I've gotten this cat food he's been doing great! And our second cat didn't want to eat their cat food anymore. LOL so we feed it to both.

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  • 5 out of 5 stars

    My cat’s review

    By on

    I was feeding my cat Pro Plan cat food and my vet suggested I feed him this instead because he was gaining weight and is also seven now. She gave me a free bag. I took it home. I thought, well my cat will never eat this, it’s probably going to be one that goes in the trash. I fed it to him and to my amazement he loves it. I highly recommend this. At least my cat loves it.

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  • 5 out of 5 stars

    He Loves It!

    By on

    We were afraid to try a new food with our cat but he loves it! In fact the other cats in the house try to eat his food now too. There was no transition time although we did mix old and new for a few days because I was worried about tummy troubles... it didn't seem to bother him like other foods did.

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  • 5 out of 5 stars

    Love Chewy!

    By on

    It's great being able to get my prescription pet food & litter delivered so quickly to my door!

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  • 5 out of 5 stars

    perfect for chunky cats

    By on

    So far my 30 pound sack of kitty is loving this food. Thankfully transitioning was easy and not harsh on his stomach like other foods do. And his fur is sooo soft and shinier! We are still into the first month, but hoping this chunk will shed some pounds!!

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  • 5 out of 5 stars

    REAL DIET cat food

    By on

    After all the products that we’ve tried Nikita is finally losing weight. Awesome food.

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  • 5 out of 5 stars

    Prescription cat food

    By on

    This food seems to be working well for our cats. I will start doing the auto order feature of chewy once I know how long a bag will last.

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  • 1 out of 5 stars

    Made My Cat Gain Weight

    By on

    I'm so sad to write this review because I had such high hopes for the product. My cat enjoyed the taste and was eating it just fine. I purchased it since she was eating another prescription cat food and was having difficulty losing weight. My vet suggested that we try this food in hopes that she would lose weight. We fed her what was recommended for her to lose, and she ended up gaining. She now weighs more than she ever has. Now we have to continue our search for a new diet food, hopefully one without all these horrible gluten and soy ingredients.

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  • 5 out of 5 stars

    She likes it!

    By on

    Finiky overweight girl, no complaints! Doctor prescribed and no issues. Even my kitten tries to eat it. Both hard and soft. Good product.

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