PRO PLAN VETERINARY DIETS OM Obesity Management Dry Cat Food

PRO PLAN VETERINARY DIETS OM Obesity Management Dry Cat Food

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  • 1.5kg £17.79
  • 5kg £45.35

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PURINA Veterinary Diets are scientifically researched foods that have been developed by nutritionists and vets to provide all that your cat needs to maintain health and growth. PURINA Veterinary Diets OM Formula is a diet which has been clinically proven to be effective at weight loss in obese cats. It's low fat, high protein content means it can also be used as a maintenance diet and is effective at keeping the cat's muscle mass at an optimum size.

  • High protein level to help promote loss of body fat while maintaining muscles mass.
  • Low fat and low calorie diet helps promote weight loss.
  • Formulated to promote low RSS to help minimise the occurrence of struvite and calcium oxalate urinary stones, a more common concern in overweight cats.

PURINA Veterinary Diets OM key benefits

Purina Veterinary Diets OM Formula Key Benefits

Feeding Guide

Purina Veterinary Diets OM Adult Feeding Guide

Purina Veterinary Diets OM Adult Feeding Guide



Maize gluten meal, wheat gluten meal, soya meal, dehydrated poultry protein, wheat flour, pea fiber, digest, minerals, animal fat, fish oil, yeast.


Meat and animal derivatives, minerals, cereals, derivatives of vegetable origin, various sugars.



Protein: 48.0 %
Fat content: 8.0 %
Crude ash: 8.0 %
Crude fibres: 7.5 %
Energy value: 3.1 kcal/g


Moisture: 77.5%
Protein: 11.8%
Fat content: 3.5%
Crude ash: 2.9%
Crude fibres: 1.5%
Taurine: 1 500 mg/kg
Energy value: 0.81 kcal/g

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All prices include VAT where applicable.

Reviews (7)

Summary of Reviews for PRO PLAN VETERINARY DIETS OM Obesity Management Dry Cat Food

Overall 4
Value For Money
Nutritional Value
Pet's Opinion
7 out of 7 (100%) customers would recommend this product.
5 stars (4 reviews)
4 stars (2 reviews)
3 stars (1 reviews)
2 stars (0 reviews)
1 stars (0 reviews)

Only verified purchasers of this product can leave a review.

55 Brilliant food
Verified Purchase

By on 28 December 2018

My cat was recommended this food by his vet.
He was 7.4kg and overweight. After 9 months and 20g morning and night he lost weight and is now a healthy 4.5kg! He adores this food and his coat is the best it’s ever been.
He has a treat toy and we normally put some of these in it for him to hit out and he loves it.
The food can be rather powdery but doesn’t stop Bleu licking it up!
A large bag usually lasts 2-3 months for us.
Would highly recommend.

Customer recommends this product

45 My female cat likes this food. It does not stop or reduce her appetite , which I had hoped it would do. She was a farm cat so I guess she had to fight at meal times to fill her belly.
Verified Purchase

By on 16 April 2018

This product was recommended by our vet due to the obesity of my cat.

Customer recommends this product

35 Good product
Verified Purchase

By on 8 April 2018

I'm afraid my cat didn't like this food. I'm sure another cat would enjoy it . The only thing I didn't like about it is it's very dusty.

Customer recommends this product

45 My 3 cats enjoyed the food and it helps maintained their weight.
Verified Purchase

By on 7 January 2018

Good quality and good value for money. I have recommended it to my friends.

Customer recommends this product

55 Slimming world
Verified Purchase

By on 4 December 2017

She likes it. Bit early to work out how it's going. Going in for her first weigh in next week so fingers crossed!

Customer recommends this product

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Q & A

Below are some recent questions we've received regarding PRO PLAN VETERINARY DIETS OM Obesity Management Dry Cat Food, including answers from our team.

20 August 2015 at 10:55pm

How much to feed my cat?

Mrs T

I visited my local vet today with my cat for his yearly booster. They weighed him and he was 8.5kilos. He is an indoor cat so doesn't get much exercise. I feed him on Royal Canin light weight care which is lower in calories. All the vet said was to reduce his food. I feed him 40g twice a day. What I would like to know is how much do I reduce his food to? Is the food I'm giving him ok? Is the Purina Veterinary diet OM Obesity Management any better?
I am really concerned about his well being and don't want him to end up with diabetes.

  • VioVet Staff

It sounds as if he is dramatically obese to me. Some foods are less fattening than others, but given the situation you are now in, the only way he will lose weight is to restrict the amount of food he gets, just as your vet has said. The amount you should give is easy to work out for yourself in time. You have to start off by knowing how much he actually eats in a day, then I would offer 10% less than that for 2 weeks and see how things are going. You should feed him twice a day and he should be eating all that you put in the bowl very quickly. If he wanders off and wants to come back later to finish any, you are giving him too much and you should reduce it further. If he is eating it all up very quickly and having to wait until the next meal, then he will be difficult to live with because he will demand more food, but there is a chance he will lose weight. If he is hungry at this level of feeding, you continue for 2 weeks and go back to the vets to get him weighed (often a nurse will do this economically). If he is losing weight then continue with this amount of food, if not then you have to reduce by another 10% and try that for 2 weeks. So you go on. The correct amount of food to give him is that amount which produces the correct body weight. There is no greater truth than that and there really is no mystery to it. If he is too fat, you should gradually reduce it. Rapid weight loss is actually dangerous to a cat, but gradual weight loss would be good for him. If he is overweight he has been getting too much and you need to reduce it. Trial and error will eventually get you to the point where his weight is just right and then you know how much to feed him. If he ever gets too thin while remaining hungry, you need to increase the amount of food. If he is thin and not hungry he needs to see a vet. Otherwise just aim for very gradual weight loss over many months, slowly restricting the amount of food he gets. If you only feed him twice per day at a regular time he will get used to the routine and not pester for food all the time.

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