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Hill's Prescription Diet R/D Weight Reduction Dry Cat Food 3.9kg
Hill's Prescription Diet R/D Weight Reduction Dry Cat Food 3.9kg
Hill's Prescription Diet R/D Weight Reduction Dry Cat Food 3.9kg
Hill's Prescription Diet R/D Weight Reduction Dry Cat Food 3.9kg
Hill's Prescription Diet R/D Weight Reduction Dry Cat Food 3.9kg
Hill's Prescription Diet R/D Weight Reduction Dry Cat Food 3.9kg
Hill's Prescription Diet R/D Weight Reduction Dry Cat Food 3.9kg
Hill's Prescription Diet R/D Weight Reduction Dry Cat Food 3.9kg
Hill's Prescription Diet R/D Weight Reduction Dry Cat Food 3.9kg
Hill's Prescription Diet R/D Weight Reduction Dry Cat Food 3.9kg
Hill's Prescription Diet R/D Weight Reduction Dry Cat Food 3.9kg
Hill's Prescription Diet R/D Weight Reduction Dry Cat Food 3.9kg
Hill's Prescription Diet R/D Weight Reduction Dry Cat Food 3.9kg
Hill's Prescription Diet R/D Weight Reduction Dry Cat Food 3.9kg
Hill's Prescription Diet R/D Weight Reduction Dry Cat Food 3.9kg
Hill's Prescription Diet R/D Weight Reduction Dry Cat Food 3.9kg

Hill's Prescription Diet R/D Weight Reduction Dry Cat Food 3.9kg

$99.99

(611 reviews)

r/d Chicken Flavor Cat Food | Hill's Prescription Diet

r/d Chicken Flavor Cat Food | Hill's Prescription Diet

Hill's Prescription Diet R/D Weight Reduction Dry Cat Food 3.9kg

(611 reviews)

r/d Chicken Flavor Cat Food | Hill's Prescription Diet

r/d Chicken Flavor Cat Food | Hill's Prescription Diet

$99.99 - $126.99

in 9 offers

The lowest price for Hill's Prescription Diet R/D Weight Reduction Dry Cat Food 3.9kg right now is $99.99 at PetPost Australia, compared across 9 retailers.

The all-time low was $82.60 on 13 Jan 2026 — today's price is 21% above the lowest ever. It has been notably cheaper before — worth setting a price alert.

Prices last updated 1 July 2026.

Price comparison

Price data powered by pricesAPI.io

Last updated at 01/07/2026 10:18:57

Please note: price history and price alerts are not available for some stores, including Amazon.com.au.
PetPost Australia

$99.99

3.85kg Hill's Prescription Diet R/D Weight Loss Dry Cat Food - With L-Carnitine & Fiber

Delivery $10

Your PetPA

$105.95

Hill's Prescription Diet R/D Weight Reduction Cat Dry Food 3.9kg

Delivery between 8–10 July $9.99

Vets Love Pets

$105.99

Hill's Prescription Diet r/d Weight Loss Adult Cat Dry Food

Free delivery between Sat – Tue

vet-n-pet Direct

$108.95

Hill's Prescription Diet Feline r/d Weight Loss - 3.9kg

Free 30-day returns

PetO

$109.99

Hill's Prescription Diet r/d Weight Reduction Dry Cat Food 3.9kg

Free delivery between 3–10 July

Oveds Horse & Pet Store

$112.99

Hill's Prescription Diet r/d Chicken Flavour Dry Cat Food 3.85kg

Delivery between 3–10 July $15.94

Aussie Vet Products

$116.95

Hill's Prescription Diet r/d Chicken Flavour Dry Cat Food 3.85kg

Delivery between 3–13 July $14.75

Cat Haven

$123.00

Hills Prescription Diet R/d 3.9kg

Free delivery

Habitat Pet Supplies

$126.99

Hills Prescription Diet Cat r/d Weight Reduction Dry Food 3.9kg

Free delivery between 6–12 July

Price history

Price history

Please note: price history and price alerts are not available for some stores, including Amazon.com.au.

Reviews

24 August 2022Brandon M.

originally posted on southernagriculture.com

No photo cause this is cat food. Our cat uses this Rx formula and sometimes it is very hard to find. Thanks for having it in stock for our Molly girl. Thanks the Bole Family, Colorado

3 December 2021ju-hanna.p

originally posted on influenster.com

My furrbaby had her belly xray for lumps. The result came out that it is only a big fat. She is 15 months old. The Vet recommended to change her biscuits in to low calorie. Now she started eating her hills prescription diet r/d biscuits and she loves it.

Excellent
7 August 2022Stevie M.

originally posted on petpost.com.au

The cat has have lost some weight which she wasn't on her old biscuits and she is allowed double the amount. She is much much happier. As always I love dealing with pet post allways have the best prices and the item is always shipped and arrives incredibly quickly

Specification

Warnings
Product WarningsConsult with your veterinarian to make sure Prescription Diet is the right food for your pet.
Ingredients
IngredientsBrewers Rice, Chicken By-Product Meal, Corn Gluten Meal, Powdered Cellulose, Chicken Liver Flavor, Soybean Oil, Lactic Acid, Calcium Sulfate, Potassium Sulfate, Choline Chloride, DL-Methionine, Taurine, Glyceryl Monostearate, Potassium Chloride, vitamins (Vitamin E Supplement, L-Ascorbyl-2-Polyphosphate (source of Vitamin C), Niacin Supplement, Thiamine Mononitrate, Vitamin A Supplement, Calcium Pantothenate, Riboflavin Supplement, Biotin, Vitamin B12 Supplement, Pyridoxine Hydrochloride, Folic Acid, Vitamin D3 Supplement), Iodized Salt, L-Carnitine, L-Threonine, minerals (Ferrous Sulfate, Zinc Oxide, Copper Sulfate, Manganous Oxide, Calcium Iodate, Sodium Selenite), Mixed Tocopherols for freshness, Natural Flavors, Beta-Carotene
Manufacturer

Price comparison

Updated about 5 hours ago
Please note: price history and price alerts are not available for some stores, including Amazon.com.au.
PetPost Australia

$99.99

3.85kg Hill's Prescription Diet R/D Weight Loss Dry Cat Food - With L-Carnitine & Fiber

Delivery $10

Your PetPA

$105.95

Hill's Prescription Diet R/D Weight Reduction Cat Dry Food 3.9kg

Delivery between 8–10 July $9.99

Vets Love Pets

$105.99

Hill's Prescription Diet r/d Weight Loss Adult Cat Dry Food

Free delivery between Sat – Tue

vet-n-pet Direct

$108.95

Hill's Prescription Diet Feline r/d Weight Loss - 3.9kg

Free 30-day returns

PetO

$109.99

Hill's Prescription Diet r/d Weight Reduction Dry Cat Food 3.9kg

Free delivery between 3–10 July

Price history

Price history

Please note: price history and price alerts are not available for some stores, including Amazon.com.au.

Reviews

24 August 2022

No photo cause this is cat food. Our cat uses this Rx formula and sometimes it is very hard to find. Thanks for having it in stock for our Molly girl. Thanks the Bole Family, Colorado

Brandon M. originally posted on southernagriculture.com
3 December 2021

My furrbaby had her belly xray for lumps. The result came out that it is only a big fat. She is 15 months old. The Vet recommended to change her biscuits in to low calorie. Now she started eating her hills prescription diet r/d biscuits and she loves it.

ju-hanna.p originally posted on influenster.com
Excellent
7 August 2022

The cat has have lost some weight which she wasn't on her old biscuits and she is allowed double the amount. She is much much happier. As always I love dealing with pet post allways have the best prices and the item is always shipped and arrives incredibly quickly

Stevie M. originally posted on petpost.com.au
Excellent Food Cats with Weight Problems
23 May 2022

Great food for a cat that needs weight management and also has urinary problems as well. It's the only food Sooty can have because it is low in fat.

Chris originally posted on petcircle.com.au
Excellent Product
3 August 2021

My boy was at an unhealthy weight of 9.4 kilos when he started this food. After having no success with weight loss on another, I started him on the r/d dry food and in just over two years he is now a little underweight at 6.44 kilos. I will be increasing his daily amount to see if it will at least maintain his weight (or increase it by a little) before I change back to the other product (another Hills Scientific Diet) which did maintain weight with no loss/gain. Highly recommend r/d

originally posted on hillspet.com.au
Hill's Prescription Diet - Feline r/d Weight Reduction 4lbs
10 September 2022

I purchased this because our cats' favorite, Hill's prescription diet, weight management was out of stock. The main ingredients seem to be pretty much the same. However, cats being cats, they haven't quite liked this variation, and so we shall move back to the weight management diet once it appears back on the online shlves.

Ajay J originally posted on vetopia.com.hk
My cat loves it but not losing weight.
8 February 2018

I first had my 15lb cat on the Hill's Metabolic for over a year and she didn't loose any weight. I started going to a new vet and was told that some cats gain weight on that brand which she did gain a 1/2 lb. So then, they recommended the R/D for my cat. It took her a while to get use to the new food but she doesn't complain now. I am disappointed as she hasn't lost any weight in over 9 months. Not sure if I should go back to something less expensive since she has not lost any weight and this cat food is expensive. I don't mind spending money on my sweet cat to help her but I was disappointed in the Hill's products.

originally posted on hillspet.com
Not a big hit, but it works
27 November 2015

When my cat weighed in at 23# 7oz,, well he may be a large cat, but that is way overboard and he has a definate paunch. My vet gave me this food to help him. Said cats love it. Now, he has been fed a cup of food a day for the last 2 years, the healtyist i could find. It hasn't affected his weight at all. So i switch to this food, same dose, a cup a day, and he looses 15 oz in 2 weeks! Okay, that might not be a killer progress for a human but for a cay it is great! The thing that might be helping is that he only eats it if he is really hungry, because he doesn't like it. He always trys to burry anything he doesn't like and I have the table scratches to prove he does not like this food. This last week I gave him some other good quality food 1/4 c with 3/4 cup of the ... MoreWhen my cat weighed in at 23# 7oz,, well he may be a large cat, but that is way overboard and he has a definate paunch. My vet gave me this food to help him. Said cats love it. Now, he has been fed a cup of food a day for the last 2 years, the healtyist i could find. It hasn't affected his weight at all. So i switch to this food, same dose, a cup a day, and he looses 15 oz in 2 weeks! Okay, that might not be a killer progress for a human but for a cay it is great! The thing that might be helping is that he only eats it if he is really hungry, because he doesn't like it. He always trys to burry anything he doesn't like and I have the table scratches to prove he does not like this food. This last week I gave him some other good quality food 1/4 c with 3/4 cup of the diet, and he still lost the 15 oz. So though he votes thumbs down, I give it a thumbs up Be patient with your cats. They won't starve themselves any more than a child will hold his breath untill he dies. Can't happen. They just try to out-stuborn us.Now, if I could just find this for closer to $3 a pound or less I would be in seventh heaven. Just saying it is Pricy doesn't say enough!

Chrystalkay originally posted on pet360.com
This food is a cat changer
21 October 2021

This has changed our grouchy, moody, overweight, almost returned to the shelter cat to a happy, playful, sometimes skitzo cat. I’m glad the vet recommended it! The only problem is it’s expensive and we can’t go back to normal food because she turns back to her original grouchy self once the weight is put back on.

Glenn O. originally posted on petpost.com.au
This food is great for managing cat’s weight & for a shiny coat!
7 April 2020

Our cat Lily loves this cat food and this really helps us maintain her weight. It’s high quality & our cat is so healthy for a 14 year old!Everyone including our vet always comments on how beautiful her coat is! It’s such good quality & the bottomless bowl makes the delivery so much easier! I cannot recommend this enough :-)

Sarah originally posted on petshop.co.uk

Specification

Warnings
Product WarningsConsult with your veterinarian to make sure Prescription Diet is the right food for your pet.
Ingredients
IngredientsBrewers Rice, Chicken By-Product Meal, Corn Gluten Meal, Powdered Cellulose, Chicken Liver Flavor, Soybean Oil, Lactic Acid, Calcium Sulfate, Potassium Sulfate, Choline Chloride, DL-Methionine, Taurine, Glyceryl Monostearate, Potassium Chloride, vitamins (Vitamin E Supplement, L-Ascorbyl-2-Polyphosphate (source of Vitamin C), Niacin Supplement, Thiamine Mononitrate, Vitamin A Supplement, Calcium Pantothenate, Riboflavin Supplement, Biotin, Vitamin B12 Supplement, Pyridoxine Hydrochloride, Folic Acid, Vitamin D3 Supplement), Iodized Salt, L-Carnitine, L-Threonine, minerals (Ferrous Sulfate, Zinc Oxide, Copper Sulfate, Manganous Oxide, Calcium Iodate, Sodium Selenite), Mixed Tocopherols for freshness, Natural Flavors, Beta-Carotene
Manufacturer

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