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10 Best Dog Weight Gainers 2025 in the United States

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Our Top Picks

#1

Winner

Bully Max 2-in-1 Muscle Builder Power Tabs for Puppies & Adult Dogs - Puppy & Dog Treats Vitamins for Muscle Gain & Growth - Multivitamin Supplements for All Breeds & Ages - 30 Chewable Tablets

Rating
9.9
Chosen by1,324
Supplement Form

Most important from
14232 reviews

Supplement Form
The tabs are easy to incorporate into daily routines, and dogs take them without any fuss.

Bully Max 2-in-1 Muscle Builder Power Tabs are chewable tablets designed to support muscle gain and comprehensive health for dogs of all ages and breeds. This product excels in offering a blend of muscle-building and multivitamin benefits, with nine key ingredients to promote muscle growth. Additionally, it includes essential vitamins and minerals for health support, including heart health, joint support, and cognitive function.

The tablets come with a blend of natural ingredients, ensuring a safe and potent formula without harmful additives. They are flavored to be appealing to dogs, making them easy to administer daily, which is a significant advantage for pet owners.

While the product is made in the USA with globally sourced ingredients, some pet owners might prefer locally-sourced ingredients only. These tablets are a good choice for dogs needing support in weight management, muscle development, or overall vitality, and they come highly recommended by veterinarians.

Rating
9.9
Chosen by1,324
Supplement Form

Most important from
14232 reviews

Supplement Form
The tabs are easy to incorporate into daily routines, and dogs take them without any fuss.
#2

Bully Max 2X Calorie Dry Dog and Puppy Food PRO Series, High Protein, Healthy Weight Gain and Muscle Mass for All Breeds | 600 Calories Per Cup | Slow-Cooked | Zero recalls

Rating
9.8
Caloric Content
Protein Content
Fat Content

Most important from
727 reviews

Caloric Content
Aging dogs benefit greatly from this food, as it provides a perfect blend of protein, fat, and calories to combat weight loss.
Protein Content
Aging dogs benefit greatly from this food, as it provides a perfect blend of protein, fat, and calories to combat weight loss.
Fat Content
Aging dogs benefit greatly from this food, as it provides a perfect blend of protein, fat, and calories to combat weight loss.
Digestibility
This food has been transformative for an underweight, malnourished German Shepherd, helping him gain weight, increase energy levels, and improve digestive health.
Flavor and Palatability
Dogs absolutely love the taste of this food, making it a hit even among picky eaters.
Ingredient Quality
Despite its premium price, the food is highly effective and worth the investment, with noticeable improvements in the dog's overall health and appearance.
Supplement Form
For senior dogs with chewing difficulties, the kibble can be easily blitzed in a food processor and mixed with wet food.

The Bully Max Pro 2X High Calorie & High Protein Dry Dog Food is a solid option for dog owners seeking to boost their pet's weight and muscle mass. With 600 calories per cup, it is exceptionally calorie-dense, making it suitable for dogs needing to gain weight. The high protein (31%) and fat (25%) contents support muscle building and overall health. This product also includes heart-healthy flaxseed and 19 essential vitamins and minerals, providing a nutritious diet for dogs of all sizes and breeds. It's especially beneficial for performance dogs and those needing to bulk up.

The food is designed for easy digestion and optimal nutrient absorption, which helps in maintaining the dog's energy and well-being without causing digestive discomfort. Additionally, it is free from cheap fillers, soy, corn, and artificial flavors, indicating a focus on ingredient quality. However, potential buyers should be aware that the high-calorie content means portion sizes need to be carefully managed to avoid overfeeding. The flavor is chicken, which generally appeals to most dogs, and the product has received positive reviews for its palatability.

This dog food is made in the USA and adheres to high-quality standards, with a commitment to zero recalls, adding an extra level of assurance. While this product is premium-priced, its high caloric density means it lasts longer than many competitors, providing good value for money. Users should ensure a gradual transition to this food to prevent digestive upset and should follow feeding guidelines closely.

Rating
9.8
Caloric Content
Protein Content
Fat Content

Most important from
727 reviews

Caloric Content
Aging dogs benefit greatly from this food, as it provides a perfect blend of protein, fat, and calories to combat weight loss.
Protein Content
Aging dogs benefit greatly from this food, as it provides a perfect blend of protein, fat, and calories to combat weight loss.
Fat Content
Aging dogs benefit greatly from this food, as it provides a perfect blend of protein, fat, and calories to combat weight loss.
Digestibility
This food has been transformative for an underweight, malnourished German Shepherd, helping him gain weight, increase energy levels, and improve digestive health.
Flavor and Palatability
Dogs absolutely love the taste of this food, making it a hit even among picky eaters.
Ingredient Quality
Despite its premium price, the food is highly effective and worth the investment, with noticeable improvements in the dog's overall health and appearance.
Supplement Form
For senior dogs with chewing difficulties, the kibble can be easily blitzed in a food processor and mixed with wet food.
#3

Bully Max 11-in-1 Muscle Gain Power Chews - High Protein Dog Supplement with Amino Acids - Healthy Treats for Puppy & Adult Dogs - Premium Muscle Builder for All Breeds - 75 Tasty Soft Dog Chews

Rating
9.6
Flavor and Palatability
Ingredient Quality

Most important from
1501 reviews

Flavor and Palatability
Puppies love these chews, and one bag lasts a long time even with multiple puppies.
Ingredient Quality
Excellent product! After three weeks of use, my pet developed great muscle mass and gained strength, especially important post-surgery.

Bully Max 11-in-1 Muscle Gain Power Chews are designed for dogs needing extra muscle growth and recovery support. These chews are high in protein and calories, providing 5x more protein and 4x more calories per serving than many competing products. This makes them a potent option for enhancing muscle development in dogs of all breeds and all life stages, including puppies and adult dogs.

The inclusion of BCAAs like L-Leucine, L-Isoleucine, and L-Valine aids in muscle recovery and strength, which is beneficial for active or working dogs. Furthermore, the chews feature advanced antioxidant protection with astaxanthin, which supports overall health and immune function. The advanced time-release technology ensures optimal nutrient absorption throughout the day, enhancing their effectiveness.

These chews are also vet-recommended and safe for pregnant or nursing dogs. On the downside, the high caloric and protein content may not be suitable for dogs with specific dietary restrictions or those prone to obesity. Additionally, while the chews are designed to be tasty, individual dogs’ flavor preferences can vary. Finally, the chews require daily administration, which might be cumbersome for some pet owners. Bully Max chews are a high-quality option for supporting muscle growth and health in dogs, especially those involved in high physical activities.

Rating
9.6
Flavor and Palatability
Ingredient Quality

Most important from
1501 reviews

Flavor and Palatability
Puppies love these chews, and one bag lasts a long time even with multiple puppies.
Ingredient Quality
Excellent product! After three weeks of use, my pet developed great muscle mass and gained strength, especially important post-surgery.

Buying Guide for the Best Dog Weight Gainers

Choosing the right weight gainer for your dog is crucial to ensure they gain weight in a healthy and balanced manner. Weight gainers can help dogs who are underweight due to various reasons such as illness, high activity levels, or being a picky eater. When selecting a weight gainer, it's important to consider several key specifications to ensure it meets your dog's specific needs and promotes overall well-being.
Caloric ContentCaloric content refers to the number of calories provided by the weight gainer per serving. This is important because it determines how much energy your dog will get from the supplement. Higher caloric content is suitable for dogs that need to gain weight quickly or have high energy requirements, such as working dogs or those recovering from illness. For dogs that need a more gradual weight gain, a moderate caloric content may be more appropriate. Assess your dog's current weight, activity level, and health status to determine the right caloric content for their needs.
Protein ContentProtein content indicates the amount of protein in the weight gainer, which is essential for muscle development and overall health. High protein content is beneficial for active dogs, growing puppies, or those recovering from surgery or illness, as it helps build and repair tissues. For less active dogs or those with certain health conditions, a moderate protein content may be more suitable. Consider your dog's activity level, age, and health condition when choosing the appropriate protein content.
Fat ContentFat content refers to the amount of fat in the weight gainer, which provides a concentrated source of energy. High fat content is ideal for dogs that need to gain weight quickly or have high energy demands. However, for dogs with certain health issues like pancreatitis, a lower fat content may be necessary. Evaluate your dog's energy needs and health status to select the right fat content for their weight gainer.
DigestibilityDigestibility indicates how easily the weight gainer can be broken down and absorbed by your dog's digestive system. High digestibility ensures that your dog gets the maximum nutritional benefit from the supplement. This is particularly important for dogs with sensitive stomachs or digestive issues. Look for weight gainers with high-quality, easily digestible ingredients to ensure your dog can efficiently utilize the nutrients.
Flavor and PalatabilityFlavor and palatability refer to how appealing the weight gainer is to your dog in terms of taste and smell. This is important because even the most nutritious weight gainer won't be effective if your dog refuses to eat it. Choose a weight gainer with flavors that your dog enjoys, and consider trying a small sample first to ensure they will eat it consistently.
Ingredient QualityIngredient quality refers to the source and type of ingredients used in the weight gainer. High-quality ingredients are more likely to provide the necessary nutrients without causing adverse reactions. Look for weight gainers with natural, whole-food ingredients and avoid those with artificial additives, fillers, or low-quality by-products. This ensures your dog receives the best possible nutrition for healthy weight gain.
Supplement FormSupplement form refers to the physical form of the weight gainer, such as powder, liquid, or chewable treats. The form you choose should be convenient for you to administer and easy for your dog to consume. For example, powders can be mixed with food, liquids can be added to water, and chewable treats can be given directly. Consider your dog's preferences and your own convenience when selecting the supplement form.

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