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Grain-free hydrolysed cat food available to buy direct — no vet visit, no prescription, no ongoing referral fees.
Three Condition-Specific Recipes
Each formulated for a specific health need — all available without a prescription
Hydrolysed Turkey · Grain-Free
For cats with sensitive stomachs, loose stools or food intolerances. Collagen peptides for gut barrier integrity. Prebiotic FOS & MOS for microbiome balance.
1.5kg — £19.99 | 5kg — £54.99
Shop Digestive Care →Hydrolysed Chicken + UriTract™ · Grain-Free
For cats prone to FLUTD or urinary crystals. Exclusive UriTract™ blend: cranberry, camomile, rosehips, L-tryptophan & L-carnitine. Controlled magnesium & phosphorus.
1.5kg — £19.99 | 5kg — £54.99
Shop Urinary Care →Hydrolysed Salmon · 4 Omega Sources · Grain-Free
For dull coats, hairballs & sensitive skin. Four targeted omega sources: salmon oil (EPA & DHA), soya oil, dried algae & borage oil. Beet pulp & cellulose for hairball control.
1.5kg — £19.99 | 5kg — £54.99
Shop Skin & Coat →Prescription hydrolysed diets — Hill’s z/d, Royal Canin HP, Purina HA — are classified as complementary dietetic petfoods under UK animal feed legislation (Regulation 767/2009). They are licensed as therapeutic products and must be used under veterinary supervision.
Non-prescription hydrolysed cat food achieves the same core mechanism — breaking dietary protein into small, low-antigen peptides — but is formulated as a nutritionally complete everyday food, not a therapeutic diet. It requires no clinical authorisation and is suitable for long-term daily feeding.
How the Top Brands Compare
Hydrolysed cat food brands available in the UK — prescription vs non-prescription
| Feature | Hill’s z/d | Royal Canin HP | Purina HA | Calibra | Ultimate Plus Cat |
|---|---|---|---|---|---|
| Prescription required | Yes | Yes | Yes | ✔ No | ✔ No |
| Protein hydrolysed | ✔ Yes | ✔ Yes | ✔ Yes | ✔ Yes | ✔ Yes |
| Grain-free | No | No | No | ✔ Yes | ✔ Yes — all recipes |
| Condition-specific recipes | Skin & allergy focus | Allergy focus | No | No | ✔ Digestive, urinary, coat |
| Independent feeding trials | ✔ Yes | ✔ Yes | ✔ Yes | Not published | ✔ 3 named studies |
| Veterinary approved | ✔ Yes | ✔ Yes | ✔ Yes | ✔ Yes | ✔ Yes |
| Long-term everyday feeding | With vet review | With vet review | With vet review | ✔ Yes | ✔ Yes |
| Approx. cost per kg | ~£25/kg | ~£21.50/kg | ~£23/kg | ~£14.67/kg | From £11/kg |
Prices are approximate and based on UK market data, June 2026. Prescription products may incur additional consultation and renewal fees.
Try all three before committing to a full bag.
The only dedicated non-prescription hydrolysed cat food trial pack in the UK
Order the Sample Box →No. All three recipes are available to buy directly without a vet prescription. They are formulated as nutritionally complete everyday foods, not therapeutic veterinary diets, and do not require clinical authorisation to purchase.
Many owners make this switch for long-term maintenance once their cat is stable. Always consult your vet before changing your cat’s diet if they have a diagnosed medical condition. Transition gradually over 7–14 days to avoid digestive upset during the changeover.
Yes. All Ultimate Plus Cat recipes are nutritionally complete and balanced for everyday, long-term feeding — unlike some therapeutic diets intended only for short-term management. They meet the nutritional standards required for a complete adult cat food under UK legislation.
Our Freshtrusion HDP process produces short-chain di- and tri-peptides — the same target size range as premium prescription products. Our Gastrointestinal Digestive Care recipe achieved 92% protein digestibility in an independent study at West Pomeranian University of Technology, Poland, significantly above the FEDIAF 80% benchmark. All recipes are formulated by trained pet nutritionists and approved by licensed veterinarians.
Choose based on your cat’s primary health need: Digestive Care for sensitive stomachs and loose stools; Urinary Health for FLUTD, crystals or recurring urinary issues; Skin, Coat & Hairball for dull coats, hairballs or sensitive skin. If you’re unsure, our Sample Box (£3.99) contains 100g of all three so your cat can help decide.
This page is for informational purposes only and does not constitute veterinary advice. If your cat has a diagnosed medical condition, consult your vet before making dietary changes. Ultimate Plus Cat is not a veterinary prescription diet and is not intended to diagnose, treat or cure any medical condition. Formulations may be subject to change — always check the product label for current ingredient and analytical information.