10 Best Weight Gain Supplements For Dogs in The UK

Last updated on 16/07/2025

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Best Choice

9.9

Exceptional

Dyne

TROPHY Dyne High Calorie Liquid Dietary Supplement for Dogs, 16-Ounce

Why We Love It

High calorie energy boost.
Supports picky eaters effectively.
Tasty vanilla flavor dogs love.

Main Highlights

Provides 150 calories per ounce to give additional energy to dogs to aid weight gain or resist stress conditions when supplemented to regular diet
Helps in different stress related conditions including underweight dogs picky eaters pregnant or lactating dogs dehydrated or geriatric dogs
Delicious vanilla flavor that dogs love
Made In the USA
16 ounce size

AAC Advanced Animal Care Ltd

HENCH RANGE EMPOWER Dog Muscle Builder All Breeds Muscle Gainer for Dogs Bully Maximum Gain Strength Energy Chew

15% OffFree Shipping

Why We Love It

Maximize muscle growth naturally.
Improve power and performance.
Enhance strength and stamina.

Main Highlights

Maximise Muscle & Growth
IMPROVE POWER + PERFORMANCE
ENHANCE STRENGTH + STAMINA
HIGHLY EFFECTIVE FORMULA
SAFE EFFECTIVE Contains NO steroids . NO GMO NATURAL FORMULA

AAC Advanced Animal Care

Hench Range Dog Weight Gainer- Healthy Weight Gain Supplement With Natural Ingredients Premium Nutrition for Stronger Leaner Dogs

7% OffFree Shipping

Why We Love It

Promotes healthy weight gain.
Nourishes skin and coat.
Supports immune system strength.

Main Highlights

Premium Dog Weight Gainer Supplement: Specially formulated to promote healthy weight gain and muscle growth for underweight dogs, featuring natural flaxseed oil, chicken liver powder, and whey protein powder for a nutrient-rich boost
Natural Ingredients for Holistic Health: Made with flaxseed oil, evening primrose oil, sunflower oil, rosemary extract, and milk thistle, offering a natural supplement that supports overall wellness without artificial additives
Supports Skin & Coat Vitality: Enriched with omega-3 fatty acids (EPA & DHA), evening primrose oil, and biotin, this dog supplement nourishes dry skin and promotes a shiny coat for a healthier appearance.
Enhances Liver Health & Detoxification: Contains milk thistle and chicken liver powder to support liver function and aid in natural detoxification, ideal for dogs needing liver support.
Boosts Joint Mobility & Energy: Includes essential fatty acids, zinc, manganese, and taurine to improve joint health and maintain energy levels, keeping your dog active and playful.
Strengthens Immune System: Packed with vitamins A, C, D3, E, B-complex (B1, B2, B6, B12), folic acid, vitamin K1, iron, selenium, and copper, this supplement enhances your dog’s immune system strength.
Ideal for Underweight Dogs: Perfect for pets needing to gain weight, improve muscle growth, or recover from low energy, offering a balanced diet addition under veterinary guidance. Safe & High-Quality Formula: Formulated with lecithin, choline, and tocopherols for added nutritional support, ensuring a safe and effective pet supplement for all dog breedsall dog breedscken liver taste that dogs love, making it perfect for daily supplemental feeding.
Usage Instructions: For intermittent or supplemental feeding only – mix the recommended amount into your dog’s meals daily. Consult a veterinarian for dosage based on your dog’s weight and needs

AAC Advanced Animal Care Ltd

Dog Muscle Builder All Breeds Muscle Gainer for Dogs Dominate Bully Maximum Gain Strength Energy Chew

Free Shipping

Why We Love It

Enhances strength and muscle gain.
Improves performance, powers muscles.
Promotes health, reduces muscle fatigue.

Main Highlights

Increase muscle Support Muscle definition Support muscle gain Enhance strength
Aids immune system Optimise oxygen utilisation Provide muscle power Improve performance
Help reduce lactic acid Helps reduce muscle fatigue Aids general health and well being
Contains healthy fats vitamins, minerals and enzymes necessary for muscle growth and repair

ProDog Maximus Performance Supplement For Dogs - 60 Servings | Targets Lean Muscle Growth | Superior Health, Strength, Speed, Conditioning & Vitality | 58% Protein Per Scoop | For All Dogs

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Why We Love It

Promotes ultimate muscle definition.
Maintains overall health vitality.
Enhances brain, eye function.

Main Highlights

Dog Muscle Builder - A dynamic performance dog supplement. Expertly formulated to help your dog achieve ultimate muscle definition, condition, health & vitality. Our tri-protein blend delivers 58% of vital amino acids needed to attain optimum physical condition.
All Natural - Containing no synthetic enhancers, zero nasties, just natural, organic and premium species-specific ingredients. Maximus is a powerful formula that utilises nature’s finest, human-quality proteins, nutraceuticals, superfoods & vitamins for dogs.
Supports Dog Nutrition - Packed with our tri-protein blend including hemp, pea & kelp protein that is kinder to a dog's digestive system than milk-based dog supplements. The all-natural blend nourishes the digestive system whilst supporting effective nutrient absorption.
Elite Conditioner - Sophisticated blend of premium grade dog vitamins and supplements rally together to support immune system and assist natural energy mechanisms. Maintains the natural balance of inflammatory response, supports detoxification, aids natural defences against free radicals and assists the body’s natural energy mechanisms.
High Level Focus - Our advanced mix of fish oils for dogs make Maximus a plentiful source of omega 3, 6 & 9. Essential nutrients for supporting brain, eye and gut function, fuelling consistent performance.

NAF Slim 3.3kg – Nutritional Support for Weight Management in Horses & Ponies – Low-Calorie Supplement with Added Vitamins, Minerals & Gut Support

Free Shipping

Why We Love It

Supports healthy weight management.
Low-calorie, high-nutritional value.
Improves condition and vitality.

Main Highlights

supports Healthy Weight Management - Designed to assist overweight horses and ponies in achieving and maintaining a healthy body condition.
Low-Calorie Formula with High Nutritional Value - Provides essential nutrients without adding excess calories - ideal for restricted diets.
With Digestive Support & Metabolic Balancers - Includes live yeast and prebiotics to aid digestion, plus targeted ingredients for metabolic health.
Promotes Condition & Vitality Without Weight Gain - Helps improve coat, hooves, and overall wellbeing while supporting controlled weight loss.
Palatable Daily Supplement - Easy to mix into feed and suitable for long-term use as part of a structured weight management plan.

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

22% OffFree Shipping

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.

ProDog Muscle+ Dog Weight Gainer - Advanced Nutrition 76% Protein Per Scoop & Omega 3,6,9 - Supplement for Muscle Growth & Recovery, Underweight, Malnourished Dogs (30 Servings)

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Why We Love It

Muscle gain and development.
Healthy weight management solution.
Supports overall health vitality.

Main Highlights

THE FACTS - Dogs lose up to 20% muscle mass after age 7, and senior dogs need 50% MORE protein to maintain muscle health. Our weight gainer food topper is specially formulated with high-quality protein and essential nutrients to support muscle repair and growth in any dog.
BUILD MUSCLE & STRENGTH - ProDog Muscle+ is loaded with ProDog’s signature tri-protein blend of hemp, kelp, and pea protein, delivering an industry-leading 76% quality protein per serving, ensuring the entire amino acid spectrum needed to support optimum physical condition is provided in abundance.
HEALTHY WEIGHT GAIN - The quality protein-rich formula, combined with rolled oats and fish collagen, assists underweight or malnourished dogs to gain weight healthily. The expertly formulated mix of species-appropriate ingredients provides premium nutrient-dense dietary support with absolutely zero unhealthy or artificial bulking agents or filler ingredients
BOOST VITALITY & IMMUNITY - This advanced formula boosts overall health and vitality by replenishing essential vitamins and minerals lost through an active lifestyle. With bioavailable ingredients, fish collagen, and oil, it supports the immune system, promotes a balanced inflammatory response, and aids natural detoxification and energy production.
GENTLE ON SENSITIVE STOMACHS - Muscle + is made with 100% species-appropriate ingredients, featuring 76% of ProDog’s tri-protein blend. This blend is gentle on sensitive stomachs and avoids dairy-based proteins like whey. Enhanced with L-glutamine, it supports digestion and optimal nutrient absorption.

AniForte BARF Complete 500g for Dogs - 100% Natural Barf Supplement with Minerals, Vitamins and Herbs - Premium Quality, Rich in Calcium & Ideal as Daily All-Round Care for Raw Food Diets

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Why We Love It

Balanced diet for dog's wellbeing.
Loaded with important vitamins, minerals.
Easy to feed, unique taste.

Main Highlights

100% natural, balanced & species-appropriate all-round supplement developed for dogs on a BARF/Raw Food Diet - Includes optimal nutrient composition for a vital & happy dog life
The particularly nutrient-rich mixture contains important vitamins (B, A, C, D & E), minerals (calcium, magnesium etc.), omega 3 & omega 6 fatty acids, trace elements (e.g. zinc) & amino acids
The natural herbal mixture complemented with brewer's yeast, eggshell powder & seaweed meal supports dogs in feeding a species-appropriate raw diet
The carefully crafted vitamin powder is easy to feed & has a high acceptance due to its unique taste of fresh herbs - suitable for junior (from 4 months), adult & senior dogs
Our BARF-Line products are developed by expert veterinarians & animal health practitioners - tailored to the needs of your pet during raw feeding. Manufactured to the highest quality standards

YuMOVE Max Strength Joint Supplement for Senior Dogs, Essential Dog Hip and Joint Aid for Senior Dogs with Glucosamine, Chondroitin, Green Lipped Mussel, Aged 8+, 60 Chews

15% OffFree Shipping

Why We Love It

50% more power delivery.
Clinically proven in 6 weeks.
Supports joint mobility effectively.

Main Highlights

YuMOVE Max strengthMulti-action is a dog joint supplement designed for senior dogs over 8 years in need for joint aid and active support
Soothes joints with Omega-3, supports joint structure and aids mobility to support hip and joint care for dogs
ActivEase Complex made with Glucosamine, Chondroitin & Green Lipped Mussel for dog joint care
20 Percent more N-Acetyl-D-Glucosamine, the building block of Chondroitin, helps maintain healthy joint structure
Same formula in a tasty, bitesize treat
YuMOVE is the UK’s no.1 joints supplements veterinary brand**

8.8

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We scanned 827 products

We reviewed these offers relevant to the Weight Gain Supplements For Dogs 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 Dyne, AAC Advanced Animal Care Ltd, AAC Advanced Animal Care, ProDog, NAF, Buddy & Lola, AniForte, Yumove, all of which have a reputation for consistently delivering high-quality products that users love and innovative approaches for function & design.

For the best Weight Gain Supplements For Dogs in the market, we considered we took a deep dive into 4136 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 TROPHY Dyne High Calorie Liquid Dietary Supplement for Dogs, 16-Ounce. We love many things about this product by Dyne. What sets it apart from the competition is High calorie energy boost. , Supports picky eaters effectively. , Tasty vanilla flavor dogs love. .
The best value product for most shoppers and where user satisfaction is continuously the highest is HENCH RANGE EMPOWER Dog Muscle Builder All Breeds Muscle Gainer for Dogs Bully Maximum Gain Strength Energy Chew by AAC Advanced Animal Care Ltd based on online reviews by bloggers, experts and online shoppers.
The biggest bargain at the moment for Weight Gain Supplements For Dogs and the best cost-to-value ratio is 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 Muscleat Buddy & Lola with a 22% discount.
Our list of the best Weight Gain Supplements For Dogs 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 Weight Gain Supplements For Dogs in The UK

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We scanned 827 products

We concluded that: