Last Updated: 27/02/2026
Hill's Science Diet Product Updates
Discover information on the latest changes and enhancements to Hill's pet food products, including ingredient updates, new formulations, and packaging improvements.
Author: Dr Belinda Stancombe BVSc (Hons)
Reading Time: 5 minutes - short read
The following article provides an overview of recent updates to Hill's Science Diet products, including changes to formulations, ingredients and packaging that may affect some dry dog and cat foods.
These updates are part of ongoing efforts to support pet health and well-being with the latest nutritional science, and include the rollout of new features such as proprietary gut-supporting blends across select ranges. Recommendations are included to help you navigate these changes.
Hill's Science Diet discontinued products
At Hill’s Science Diet, some cat and dog formulas are being discontinued as part of ongoing product updates and portfolio changes.
We understand that changes to your pet’s food can be concerning, so the team at Hill's Science Diet have outlined recommended alternative products to help make the transition as smooth as possible. If you’re unsure which option is best for your pet’s specific needs, we recommend reaching out to our Pet Circle Vet Squad or consulting with your regular veterinarian.
With any diet change, a gradual transition over 7 days is recommended to help your pet adjust and to minimise the risk of digestive upset. Please refer to the section below for guidance on how to transition your pet to a new food.
Dog products
Discontinued Product
Alternative Product
Cat products
Discontinued Product
Alternative Product
Most suitable alternate diet is based on the health condition being managed:
Weight management: Hill's Prescription Diet Metabolic Dry Cat Food
Diabetes and Weight management: Hill's Prescription Diet m/d GlucoSupport Dry Cat Food
Gastrointestinal support: Hill's Prescription Diet Gastrointestinal Biome Dry Cat Food
* for further information on how to transition please contact the Hill’s Veterinary Consultation Service or speak to your regular vet
Hill's Science Diet specialty range changes
From October 2025 through to mid 2026, you will notice some changes to the Hill's Science Diet Specialty range.
These changes are part of Hill's continued efforts to increase the palatability of their range and their commitment to providing pets with high quality, science-led nutrition.
Changes to the Hill's Specialty dry products include minor formulation upgrades, and a change to the kibble size and shape in some cases. The back of the pack has also changed, so this can be a good way to tell if you've received an updated formula.
In all cases, a 7 day transition from the old formula to the updated formula is recommended, to avoid dietary upset.
FAQs
Which products are being updated?
Dog Hills Specialty Diets
Please use the tabs above to find out what's changing in your dog's diet.
Cat Hill's Specialty Diets
Please use the tabs above to find out what's changing in your cat's diet.
Previous Hills Science Diet changes
Previous changes to the Hills diets included the addition of the ActivBiome+ blend to the Hills Science Diet Adult and Senior dry lifestage foods, in mid-2025.
ActivBiome+ is a proprietary blend of prebiotics designed to nourish the gut microbiome.
By supporting beneficial bacteria in the digestive tract, ActivBiome+ supports healthy digestion, promotes balanced stools, and helps maintain a strong immune system - all essential for helping pets feel their best every day.
FAQs
Which products were updated?
The ActivBiome+ mulitbenefit upgrade is being rolled out across the entire Hill's Science Diet Adult dog and cat dry food range and includes all products featured below.
Where can I get help?
If you have any questions or concerns, you can contact our Pet Circle Vet Squad via email or via live chat on the Pet Circle website.
Ensure a Gradual Transition
Because the ingredients of these products have changed slightly or the product you are feeding has changed, to avoid any dietary upsets, we recommend that you gradually transition your pet from the old to new formula over a period of 7 to 10 days.
To make this transition possible, we recommend keeping approximately a week's worth of the old formula in reserve.
For detailed instructions on how to transition your pet's food, please see How to Introduce a New Food to Your Pet.
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History
Our experts continually monitor the health and wellness space and we update our articles when new information becomes available.
Fri Feb 27 2026
Edited by Dr Belinda Stancombe BVSc (Hons)
