10 Best High Calorie Cat Food To Gain Weight in The UK

Last updated on 21/06/2025

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IAMS

IAMS Light in Fat Complete Dry Cat Food Chicken 10kg - 30% Lower Fat Formula

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Why We Love It

Supports cat's lean body condition.
Promotes healthy weight control.
Enhances healthy digestion.

Main Highlights

84% animal protein (out of total protein), supporting your cat's natural needs and providing the great taste they love
Contains 30% less fat than IAMS Adult Cat with Fresh Chicken for a lean and healthy body condition
Reduced fat recipe suitable for sterilised cats and for adult or senior cats requiring weight loss or weight control diets
Contains L-carnitine to support fat metabolism. Tailored fibre blend, including prebiotics and beet pulp, for healthy digestion
Wheat free recipe* with no fillers, artificial colours, flavours or GMOs *produced in a factory which handles wheat

RECOACTIV Recovery Immune for cats, 1 x 280 ml, high-calorie complete diet food for cats suffering from malnutrition and during recovery, to promote weight gain, and for pets who refuse to eat

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Why We Love It

Regain strength during weakness.
Essential vitamins and nutrients.
Easy to administer liquid.

Main Highlights

APPLICATIONS: RECOACTIV Recovery Immune was developed especially for cats that need to regain their strength after a period of weakness or an acute nutritional crisis. It is suitable as a complete food during acute phases, and also as a supplement to be given with the usual food.
INGREDIENTS: The formula contains valuable ingredients which cover your pet’s requirements of vital nutrients, providing complete nutrition particularly during phases of malnourishment. All RECOACTIV products include essential vitamins and trace elements, and consist of natural, food quality ingredients. They are free of grains, sugar, dyes and preservatives.
INTAKE: Thanks to its liquid form, the wholesome food for weakened cats is easy and convenient to administer, even to animals with mouth and throat issues.
ACCEPTANCE: Cats readily accept the highly palatable and well tolerated product, making it a popular animal feed.
QUALITY OF LIFE: It is a common problem for cats to eat poorly and suffer from low body weight when they feel unwell or are ill. RECOACTIV develops products that restore your pet’s nutritional health, supporting it during nutritional crises and periods of weakness, and allowing it to lead a comfortable life.

RECOACTIV Recovery Renal for cats, 1 x 280 ml, high-calorie complete diet food for cats with kidney dysfunction and increased energy requirements during recovery, to promote weight gain

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Why We Love It

Supports kidney health effectively.
High-quality, natural ingredients used.
Easy to administer and serve.

Main Highlights

APPLICATIONS: RECOACTIV Recovery Renal for cats was developed to support cats suffering from kidney problems who have increased energy requirements. It can be used as a high-calorie complete food or in combination with the pet’s usual food as a special kidney diet.
INGREDIENTS: The formula contains moderate amounts of high-quality proteins and reduced phosphate, to relieve the kidneys and provide the weakened cat with complete nutrition. All RECOACTIV products include essential vitamins and trace elements, and consist of natural, food quality ingredients. They are free of grains, sugar, dyes and preservatives.
INTAKE: Thanks to its liquid form, the wholesome food for cats with kidney problems is easy and convenient to administer, even to animals with mouth and throat issues.
ACCEPTANCE: Cats readily accept the highly palatable and well tolerated product, making it a popular animal feed.
QUALITY OF LIFE: Chronic renal insufficiency and refusal to eat kidney diet food are common problems in cats. RECOACTIV develops products that restore your pet’s nutritional health, supporting it during nutritional crises and periods of weakness, and allowing it to lead a comfortable life.

Buddy & Lola Dog Weight Gainer Supplement - Protein For Dogs, Helps Build Muscle, Aids Recovery, Great for Fussy Eaters, A Must Have For Rescue Dogs Who Need to Gain Weight and Build Muscle

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Why We Love It

Boosts dog’s weight and mass.
Enhances muscle recovery and endurance.
Supports overall canine health.

Main Highlights

THE ULTIMATE DOG FOOD SUPPLEMENT: Our yummy meal topper is formulated with essential nutrients and high calorie proteins to help your dog gain healthy mass and weight. Simply add the powder to your dog's food and monitor the results over the next few weeks.
MAXIMIZE ENERGY: We understand how important energy and proteins are for building your dog's muscle mass and weight. Proteins are also essential for the ongoing development of lean muscles in dogs and that's why we have developed this awesome weight gainer dog supplement that will maximize protein intake for the optimum health of your dog.
PERFECT SUPPORT FOR HEALTHY WEIGHT GAIN: Our weight gainer for dogs is formulated to help support muscle endurance, muscle recovery, muscle performance, and muscle building. It is also formulated to provide essential nutrients to add healthy weight and support overall muscle strength in dogs and to target muscle fatigue.
PERFECT FOR PUPPIES & NURSING MOTHERS: Great for a nursing mother and puppies to support growth and development of body tissue. Helps to support ATP levels, blood glucose levels, supports muscle recovery after a long walk or prolonged workout and contains healthy fats to support healthy skin and shiny coats.
MADE IN UK: We care passionately about your dog’s health and the wellbeing of dogs is our primary motivator. All the ingredients used in formulating this special powdered supplement for dogs are strictly subject to guidelines. We have consistent quality standards which we can stand by hand on heart. We advise speaking to your vet first for specific advice around the suitability of this product to ensure it is suitable for them.

Cat Nutri - cal 4.25oz

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Why We Love It

Ideal for fussy eaters.
Veterinarian recommended nutritional gel.
Supports healthy heart and joints.

Main Highlights

Nutritional oral gel for kittens who need extra calories and vitamins; ideal for pets refusing food
Appetite stimulant, calorie booster, weight gainer for fussy eaters; veterinarian recommended
Nutri-Cal high-calorie gel; concentrated source of vitamins and minerals, ideal for growing kittens
Contains Omega-3 and Omega-6 essential fatty acids to support a healthy heart, skin and joints
Palatable, simple to administer, easily-digested gel; accessible calories support a healthy appetite

ZIWI Peak Steam & Dried Grass-fed Beef with Southern Blue Whiting, 800 g - Natural, High Protein Cat Food Dry, Raw Alternative & Grain Free Complete Dry Cat Food

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Why We Love It

Innovative Z-MicroSteam technology.
Made with 90% meat.
Supports heart and vision.

Main Highlights

Innovative Z-MicroSteam technology creates nutritious cat kibble that's both a complete dry food cat option and a delicious cat treat.
Premium cat dry food made with 90% ethically-sourced meat, organs, and whole fish for optimal cat health.
Natural cat food rich in taurine for cats, supporting heart health and vision in both kittens and adult cats.
Gentle on digestion, making it an excellent cat food for sensitive stomachs and a top choice of sensitive cat food dry.
Grass-fed beef cat meat combined with Southern Blue Whiting, perfect as gastrointestinal cat food for sensitive felines.

RECOACTIV Immune Tonic for cats, 3 x 90 ml, dietary supplement to boost the immune system and prevent nutritional deficiencies, effective dietary appetite stimulant

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Why We Love It

Boosts cats' immune system.
Contains natural, essential nutrients.
Easily administered liquid formula.

Main Highlights

APPLICATIONS: The RECOACTIV Immune Tonic for cats was developed to support your cat and its immune system. It has been proven to stimulate appetite.
INGREDIENTS: The formula contains valuable ingredients which cover your pet’s requirements of vital nutrients to boost the immune system. All RECOACTIV products include essential vitamins and trace elements, and consist of natural, food quality ingredients. They are free of grains, sugar, dyes and preservatives.
INTAKE: Thanks to its liquid formula, the restorative is very easily resorbed, even by pets with mouth and throat issues. It is very comfortable to administer.
ACCEPTANCE: Thanks to its great palatability and digestibility, cats enjoy taking the product, making it a popular dietary supplement food.
QUALITY OF LIFE: Refusal to eat due to weakness, illness and/or surgery is a common problem in cats. RECOACTIV develops products that give your pet new energy and allow it to lead a comfortable life.

Arden Grange Adult Dry Cat Food Light, Chicken, 2 Kg

Why We Love It

Promotes healthy digestion and vitality.
Reflects a natural feline diet.
Hypoallergenic, free from allergens.

Main Highlights

A complete, super premium pet food for adult cats that are less active, overweight or prone to weight gain such as neutered or indoor cats; Although lower in calories and fat than our standard diet, generous helpings of fresh chicken provide a healthy yet delicious meal
Free from grains and cereals to more closely reflect a cats natural diet, while providing the balanced nutrition required for our domesticated feline friends
Free from artificial colours, flavours and preservatives; Containing a unique blend of nutrients and natural supplements to help promote the optimum health, vitality and condition of your pet
Including prebiotics to aid digestion, joint supplements, taurine for a healthy heart, sight and nervous system; essential fatty acids to help promote a healthy skin and coat, cranbeerry extract for urinary tract health, natural fibres to help prevent fur balls
Naturally hypoallergenic - free from wheat-gluten, beef, soya or dairy products

Whiskas 7+ Senior Chicken 4 x 1.9 kg Bags, Senior Dry Cat Food

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Why We Love It

Formulated for senior cat health.
Supports lower urinary tract health.
Made with 100% renewable energy.

Main Highlights

100 percent complete and balanced dry cat food
Contains tasty filled pockets - Crunchy on the outside with a soft and delicious centre
Senior cat food, dry with controlled minerals to help support urinary tract health
With omega 6 fatty acids and zinc to help support a healthy skin and coat
With Taurine to help support a healthy heart
Senior cat food biscuits help clean teeth by gentle abrasive effect

Denes Complete Adult Light Wet Dog Food Chicken, 12 x 400 g

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Why We Love It

Real fresh meat included.
No artificial ingredients present.
Supports weight management naturally.

Main Highlights

Real fresh meat
Wholesome ingredients
No added sugar or salt
No artificial flavours, colours or preservatives
Complete food
Denes has been a leader in natural health care for cats and dogs since 1951.
A reduced calorie recipe, low in salt and high in fibre.
Ideal for dogs prone to weight gain.
May help in the dietary management of conditions such as colitis, heart disease and diabetes.
Made in the UK

8.7

Excellent

We scanned 1938 products

We reviewed these offers relevant to the High Calorie Cat Food To Gain Weight within online retailers such as Amazon, eBay and other local retailers, ensuring we covered all major brands and models. The products we selected come from trusted brands like IAMS, RECOACTIV, Buddy & Lola, Tomlyn, ZIWI, Arden Grange, whiskas, Denes, all of which have a reputation for consistently delivering high-quality products that users love and innovative approaches for function & design.

For the best High Calorie Cat Food To Gain Weight in the market, we considered we took a deep dive into 9691 online reviews , focusing on elements like user satisfaction, performance in real-world conditions, and long-term reliability. Our ranking also evaluates each review’s relevancy, authenticity, up-to-dateness and depth so that the comparison is more sound.

We concluded that:

The clear winner of our analysis is IAMS Light in Fat Complete Dry Cat Food Chicken 10kg - 30% Lower Fat Formula. We love many things about this product by IAMS. What sets it apart from the competition is Supports cat's lean body condition. , Promotes healthy weight control. , Enhances healthy digestion.
The best value product for most shoppers and where user satisfaction is continuously the highest is RECOACTIV Recovery Immune for cats, 1 x 280 ml, high-calorie complete diet food for cats suffering from malnutrition and during recovery, to promote weight gain, and for pets who refuse to eat by RECOACTIV based on online reviews by bloggers, experts and online shoppers.
The biggest bargain at the moment for High Calorie Cat Food To Gain Weight and the best cost-to-value ratio is Whiskas 7+ Senior Chicken 4 x 1.9 kg Bags, Senior Dry Cat Foodat whiskas with a 54% discount.
Our list of the best High Calorie Cat Food To Gain Weight is updated regularly to reflect new releases and changes in product availability, so be sure to check back often for the latest rankings and discounts.

10 Best High Calorie Cat Food To Gain Weight in The UK

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We scanned 1938 products

We concluded that: