Hill's Prescription Diet ONC Care Dry Cat Food, 7-lb bag

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($9.43 /lb)

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About This Item

Details

  • Veterinary diet specially formulated to support cats fighting cancer.
  • Dry kibble features an irresistible taste to nourish your furbaby and encourage him to clean up every drop.
  • Flavorful fats and highly digestible protein help your furbaby maintain weight and support daily activity.
  • Formula supports your kitty’s gut bacteria for a healthy GI microbiome balance.
  • Added essential omega-3 fatty acids provide immune system support.

Ingredient Information

Feeding Instructions

Hill’s. Because you’re only human

Science-led nutrition to help you give more love than humanly possible.

Expert-backed nutrition

Pet food has the power to change lives, which is why we rely on our team of 200+ scientists, nutritionists, vets and other experts who share a love for dogs and cats.

Science does more

We’ve been supporting pets & their people for over 75 years through groundbreaking scientific discoveries and nutrition innovation.

Recommended by Veterinarians

Founded by a vet, endorsed by vets — we’re proud to be a leader in cutting-edge food science and research.

About Hill’s Pet Nutrition

In 1948, Hill’s changed the pet nutrition world by launching the first veterinarian-prepared food for a pet’s specific health needs. Seven decades and thousands of innovations later, they are still leading the charge in science-led nutrition.

Shop Hill’s Pet Nutrition

Questions & Answers

3 Customer Questions


How many calories per 8oz cup?

Answer by ChewyMay 07, 2023
This recipe contains 581 calories per cup.

What is the carbohydrate content per 1/2 cup?

Answer by ChewyJul 08, 2025
This dry food has a carbohydrate content of 26.4% on a dry matter basis. We apologize, the specific nutrient information that you are requesting is not made available to us. However, you may contact Hill's Prescription Diet's Consumer Affairs office, where this information may be available.

What is the sodium content?

Answer by ChewyDec 11, 2024
This recipe contains 0.4% sodium on a dry matter basis.
4.8
Rated 4.8 out of 5 stars
97 Ratings

Customers Mention

Chewy identifies key considerations with the help of artificial intelligence and our veterinarians.

Digestibility

92% Positive

Ingredient Quality

93% Positive

Nutritional Content

92% Positive

Palatability

87% Positive

45 Customer Reviews



Always consult a veterinarian about your pet’s health needs. Customer reviews should not be used as medical advice.

Rated 5 out of 5 stars
By Karen on Dec 8, 2025

My cat liked it

I purchased this for Sadie after being diagnosed with lymphoma. She tolerated it although to ill to eat much, she seemed to like it in small amounts but passed away

I purchased this for Sadie after being diagnosed with lymphoma. She tolerated it although to ill to eat much, she seemed to like it in small amounts but passed away soon after starting it


Rated 5 out of 5 stars
By Michele on Nov 28, 2025

Onc.

My baby has cancer and is eating a lot due to the medication. He needed some dry and I felt this would be good for him to maintain his health.

My baby has cancer and is eating a lot due to the medication. He needed some dry and I felt this would be good for him to maintain his health.


Rated 5 out of 5 stars
By Denise on Oct 17, 2025

He liked the taste of the food

Due to his chemotherapy for lymphoma it can be very hard to get him to eat. The dry food is a great addition to the wet food to get him the nutrition he needs

Due to his chemotherapy for lymphoma it can be very hard to get him to eat. The dry food is a great addition to the wet food to get him the nutrition he needs. He actually likes the dry food more than the onc wet food.


Rated 5 out of 5 stars
By Sandra on Oct 24, 2025

Sniffles has put on a bit of weight

Sniffles is a special-needs cat who had been loosing weight, for a while it seemed he was starving himself to death. This prescription diet has helped and he has

Sniffles is a special-needs cat who had been loosing weight, for a while it seemed he was starving himself to death. This prescription diet has helped and he has even put some weight back on.


Rated 5 out of 5 stars
By rhiannon on Aug 18, 2025

Happy Cat

My kitty Max has cancer and had a decreased appetite. Was given a free bag from his oncologist office to try and boy oh boy did it work! So happy to find a good

My kitty Max has cancer and had a decreased appetite. Was given a free bag from his oncologist office to try and boy oh boy did it work! So happy to find a good my boy was exited to eat again! Not only this food, but now seems to have an appetite for the other food that goes down for his kitty brothers and sisters. So thank you!


Rated 5 out of 5 stars
By Kent on Dec 25, 2025

Quick Delivery

Just what we needed and with a $15 coupon as well. Fast service. Thanks

Just what we needed and with a $15 coupon as well. Fast service. Thanks


Rated 5 out of 5 stars
By Tonya on Aug 26, 2025

This definitely works to maintain weight!

This very high calorie food does the job to help keep, if not gain extra weight when required! My cat likes the flavor and is doing really well on this diet, all

This very high calorie food does the job to help keep, if not gain extra weight when required! My cat likes the flavor and is doing really well on this diet, all things considered.


Rated 5 out of 5 stars
By Ben on Oct 6, 2025

Keeping weight on

My cat has smooth cell lymphoma and he seems to like this food. It is helping him keep his weight.

My cat has smooth cell lymphoma and he seems to like this food. It is helping him keep his weight.


Rated 3 out of 5 stars
By Mary on Dec 25, 2025

High protein food for cat that has been loosing weight

The food was too rich and caused him to vomit.

The food was too rich and caused him to vomit.


Rated 4 out of 5 stars
By Maureen on Jun 23, 2025

Hill's Prescription Diet ONC Care Dry Cat Food

See my prior review on Hill's Prescription Diet ONC care dry cat food. In summary, my cat more easily ate MORE of the ONC Care Dry cat food vs the ONC care canned

See my prior review on Hill's Prescription Diet ONC care dry cat food. In summary, my cat more easily ate MORE of the ONC Care Dry cat food vs the ONC care canned or wet cat food. Your cat may be different - I believe ALL the Hill's Prescription cat food are high quality, but are very pricey.