Purina Pro Plan Veterinary Diets OM Overweight Management Formula Canned Dog Food, 13.3-oz, case of 12

Prescription Item

  • Price:

    $33.99 FREE 1-2 Day Shipping over $49

In stock

This item requires prescription approval. Details

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Low in fat, low in calories, and packed with high protein to help maintain lean body mass, Purina Pro Plan Veterinary Diets OM Overweight Management Canine Formula is designed to help manage canine weight issues. It offers dietary benefits that provide optimal nutrition while meeting your adult dog's special needs.

Key Benefits
  • The Association for Pet Obesity Prevention estimates that over half of dogs 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 dog 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 pup keeps lean body mass. High fiber levels help to keep your dog full and satisfied.
  • This highly palatable food has been designed for dogs that suffer from obesity, constipation, fiber responsive colitis, hyperlipidemia, and diabetes.
  • Made in the USA!

Use only as directed by your veterinarian.

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
  • Packaging Type


  • Food Texture


  • Brand


  • Breed Size

    Small Breeds, Medium Breeds, Large Breeds

  • Food Form

    Wet Food

  • Lifestage


  • Made in

    United States

  • Special Diet

    High-Protein, Prescription Food, Weight Control

Nutritional Info

Water Sufficient for Processing, Chicken, Liver, Rice, Powdered Cellulose, Soy Protein Isolate, Meat By-Products, Carrageenan, Guar Gum, Calcium Phosphate, Added Color, Potassium Chloride, Calcium Sulfate, Locust Bean Gum, Magnesium Sulfate, Vitamin E Supplement, Zinc Sulfate, Thiamine Mononitrate, Ferrous Sulfate, Niacin, Copper Sulfate, Manganese Sulfate, Calcium Pantothenate, Pyridoxine Hydrochloride, Vitamin B-12 Supplement, Riboflavin Supplement, Vitamin A Supplement, Potassium Iodide, Folic Acid, Vitamin D-3 Supplement, Biotin, Sodium Selenite.

Caloric Content

672 kcal/kg, 253 kcal/can

Guaranteed Analysis
Crude Protein 7.5% min
Crude Fat 1.0% min
Crude Fiber 6.5% max
Moisture 82.0% max
Ash 2.5% max
Calcium 0.19% min
Phosphorus 0.15% 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 (Cans) Adult Weight Loss Daily Feeding (Cans)
5 lbs 1 3/4
10 lbs 1 1/2 1 1/4
20 lbs 2 1/3 1 2/3
30 lbs 3 1/4 2
40 lbs 4 2 1/4
50 lbs 4 1/2 2 1/3
60 lbs 5 2 2/3
80 lbs 6 1/4 3
100 lbs 7 1/4 3 1/4

Provide adequate fresh water in a clean container for your dog 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
73 Reviews 73 Reviews 4.9 out of 5 Stars

97% Recommend

97% of reviewersrecommend this product

4.9 / 5

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Showing 1-10 of 73 Reviews

  • Great food for our Puggle!

    By on

    She had been on another prescription weight loss food, but after an ingredient change, seemed to develop food intolerance or allergy to it, with itching. We switched to OM and she has maintained her ideal weight and, most importantly, has stopped itching. She also loves this food! It keeps her satisfied. We love Chewy's wonderful customer service and one day shipping. Can't thank them enough for being a top notch business in times when a lot of businesses are slipping downward. Thanks!

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  • This food works

    By on

    Used OM years ago for an overweight lady. Using it now for a tad too heavy senior boy. The dogs love the food. It is clean. His stool is exactly as it should be. He also feels better now that he is on OM. And, in a week, his waistline is trim and showing itself! Switching to OM maybe the best thing I ever did for my dog. He has a puppy look about his 9 year old face. Thank you Purina.

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  • Dog Loves It

    By on

    My dog is extremely picky, and if she doesn't like her food will actually go a couple of days without eating. She waits next me as I spoon this food into her bowl and often cries when she thinks I am not doing it fast enough.

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  • heading in the right direction

    By on

    Because of the reduced calories I am able to meet the doctors daily feeding schedule without feeling like I am not feeding her enough. Three weeks in we are heading in the right direction

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  • Great dog food and great And fast service

    By on

    I have been buying the Purina OM from my vet for years and they always have a difficult time getting it. Chewy had it and delivered it in 2 days. I will only order from Chewy from now on.

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  • They love it!

    By on

    I have two 12 year old rescued that free fed their whole lives. My corgi mix has arthritis and a lot of extra weight for his short body. My vet gave me a plan using their regular tru instinct dry food mixed with this weight management twice per day with it measured for the current weight and weight loss expectations. The dogs get so excited at meal time it’s easy to go to twice a day because they eat it up quickly. My corgi mix has lost almost 5 pounds in about 6 weeks and already moves around better than before.

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  • Prescription dog food

    By on

    This has been very helpful to keep my diabetic dog at a good level. I add a half can to his dry dog food. I feed grain free food also

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  • Holly says

    By on

    Holly loves this, eats it right up. We thought she might refuse due to it being a low fat food, but no she loves it! Only problem, we did not order enough.

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  • She loves it!

    By on

    This is a new product for my little, aging, overweight Mini Schnauzer. I was concerned about whether or not she would accept such a dramatic change in food, going from chunks in gravy to ground, but she absolutely loves it. She gets canned food in the morning, and dry food in the evening, and she now lets me know she is READY - FEED ME!! She never did that before. She also did not have any digestive issues in switching, which was another big concern. I love being able to put this order on auto-ship, so I don't have to worry about running out. The free shipping that we qualify for is also a tremendous plus in saving us a few coins. You have a customer for life!

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  • Worked Great

    By on

    My dog loved this food, after two months she lost over 15 pounds.

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