7 Best Muscle Building Supplements for Dogs

Written by: Molly Weinfurter
Molly Weinfurter is a writer for iHeartDogs, and she’s passionate about helping animals in need. She volunteers for Bailing Out Benji and a local dog rescue.Read more
| Published on September 1, 2023

Reviewed by: Dr. Theresa Fossum

Reviewed by:

Dr. Theresa Fossum

Meet Dr. Theresa (Terry) W. Fossum, DVM, MS. Ph.D., Diplomate ACVS – a remarkable animal lover whose passion for animal care and innovative solutions has left an indelible mark on the veterinary world. As the CEO of both Phoenix Animal Wellness and Epic Veterinary Specialists, she's ensuring dogs and cats receive the highest level of care and compassion.Read more
iHeartDogs is reader-supported. When you buy via links on our site, we may earn an affiliate commission at no extra cost to you.

The best muscle building supplements for dogs can be life-saving for some canines. Watching your dog grow old or weak is one of the most painful sights. Everyone wishes for their dog to be happy and healthy, but that’s not always possible if you’re only relying on dog food.

One of the best ways to ensure that your dog has good health is with strong muscles. Using the best muscle building supplement in your dog’s daily diet could make them stronger and more energetic. However, choosing the ideal supplement can be tricky.

We gathered a list of the best muscle building supplements for dogs that will encourage excellent muscles, bones, and overall health. With our guide, narrowing down the best supplement for your dog can be easier, and you’ll know exactly what factors to look for. Yet, before you start your dog on a muscle building supplement, you should talk to your vet.

Dog playing fetch

If your dog needs to lose weight instead of gain it, check out the best dog weight loss supplements.

DON'T MISS SPARK PAWS' FALL SALE! Get 30% off cozy dog-and-human matching outerwear for fall at SPARK PAWS!

 Best Muscle Building Supplements for Dogs

1. MYOS Canine Muscle Formula

MYOS muscle supplements for dogs

This product is an all-natural and vet-recommended powder that’s designed to improve dog muscle health. The single ingredient is fortetropin, which is a proteolipid complex that comes from a fertilized egg yolk. It helps build muscles while also improving vitality and reducing the risk of muscle loss.

With better muscle health, your dog may also recover faster from injuries and illnesses. Dogs who take it may also experience improved mobility, so senior dogs may become more active. The easiest way to serve this supplement is to scoop the proper dosage and mix it with your dog’s food. Many dogs love the powder’s flavor, so it could make them more interested in their food.


  • Made with one natural ingredient
  • Builds muscle and reduces muscles loss
  • Helps dogs recover faster
  • Improves mobility
  • Vet-recommended


  • May cause digestive issues for some dogs



Related: 11 Best Urinary, Kidney, & Bladder Supplements for Dogs

2. Muscle Bully Protein Supplement

Muscle Bully Muscle Building Dog Supplement

If you want your dog to build hard, lean muscle, then the Muscle Bully protein supplement could be an excellent solution. It’s a flavorless powder supplement that you can sprinkle onto your dog’s food. It contains the vitamins and minerals needed for your dog’s muscle growth, support, and definition. As a result, your dog’s size and mass will likely increase when on this supplement.

This supplement is packed with amino acids to give your dog a full health boost. The formula can improve their strength, energy, stamina, and power. It’s designed specifically for bully breeds like American Bulldogs and American Staffordshire Terriers, but it’s not limited to those breeds only. This product is most effective for dogs who are underweight and malnourished because it can quickly help them regain strength.


  • Builds hard, lean muscles
  • Helps underweight dogs regain strength quickly
  • Improves energy, stamina, and power
  • Packed with essential amino acids


  • May receive the wrong product


3. Bully Max 2-in-1 Puppy Chews for Immunity and Growth

Bully Max Puppy Muscle Building 

Bully Max specializes in making products that keep dogs strong, active, and healthy. These soft chews focus specifically on the development of puppies to improve the growth, immunity, and muscle building of young dogs. The supplements are turkey-flavored, so most puppies will gobble them up as if they’re treats.

Since they’re rich in protein, these supplements are excellent for keeping puppies strong and energetic. These supplements can even support the growth of strong bones and improve joint issues. The chews are easily digestible and easy to serve, so they’re a great choice for new puppy parents, especially if the puppies are large breeds.


  • Supports puppy growth
  • Delicious turkey flavor
  • Supports the immune system
  • Includes probiotics
  • Easy to chew and digest


  • Not ideal for adult dogs


4. Lexelium Weight Gainer Supplement

Lexelium dog muscle builder supplement

This growth-boosting powder is beef-flavored, so most dogs will happily gobble it up when it’s sprinkled on their food. It can help dogs gain weight, build muscle, and have a better appetite. It’s ideal for helping underweight or malnourished dogs quickly gain weight. It can also help working dogs maintain healthy muscles.

High protein, calcium, and zinc are some of the key components of this product to promote growth and strength. It’s vet-formulated using natural ingredients sourced in the United States. The human-grade, muscle-building ingredients work for a variety of animals, including dogs, cats, and even farm animals.


  • Beef-flavored powder
  • Vet-formulated
  • Increases weight and builds muscle
  • Stimulates an appetite
  • High in protein, calcium, and zinc


  • May cause increased thirst



5. Bully Max Performance Muscle Building Tablets

Bully Max Muscle Building Tablets 

Bully Max is known for its high-protein dog food, but the company also makes tablets to add to your pup’s diet. These muscle-building supplements are great for calorie deficiency in your pet if they’re getting weaker or slower. The high amount of protein will ensure that your dog stays fit and healthy. These tablets help with the buildup of new, strong muscles and make your dog active and playful even in their senior years.  

These supplements work efficiently for dogs of all ages. Additionally, the formula uses only real and high-quality meat, making it rich in protein. It also contains nine essential aminos. Thus, your dog will appear more muscular and robust if they take these supplements regularly. This product is made in the USA following strict safety standards. You may need to hide the tablets in food or pill pockets to get dogs to take them.


  • Suitable for all ages
  • Contains real meat
  • Rich in protein and calories
  • 9 essential aminos


  • Some dogs may not like the flavor


6. MBF Supplements Bully Muscle Builder

Bully Protein Muscle Builder for Dogs

This Bully Protein Powder is a powerful muscle builder that you can sprinkle on your dog’s food to serve. Most dogs will gobble it up without hesitation. All the flavors in the formula are natural to ensure that everything in it is safe for your dog and easy for them to digest. 77% of this supplement is protein so that it maximizes muscle gain and builds pure lean muscles.

Even though the formula is designed for Bully breeds, dogs of all ages and breeds can benefit from this product. It’s a vet-approved supplement that’s made in the USA following strict safety requirements.


  • 77% protein
  • Builds pure lean muscles
  • Natural ingredients
  • Works for all breeds and ages


  • Some dogs dislike the flavor


7. Buddy & Lola Dog Weight Gainer

Buddy & Lola muscle builder for dogs

The Buddy & Lola Dog Weight Gainer not only increases the mass and size of dogs but also improves the endurance, recovery, and performance of their muscles. It builds and strengthens muscles for all breeds while also maximizing energy and protein intake. It can even make a dog’s skin and coat much healthier.

It’s recommended for underweight dogs because they can gain weight quickly. It can benefit picky dogs as well because the powder has a maple bacon flavor. The formula is packed with amino acids for a full health boost. The packaging includes a scoop inside to make it easy to pour onto your dog’s food.


  • Improves the endurance, recovery, and performance of muscles
  • Promotes healthy skin and coat
  • Packed with amino acids
  • Maximizes energy and protein intake
  • Maple bacon flavor


  • Some dogs dislike the flavor


      Related: The 10 Best Calming Supplements for Dogs

      Factors To Consider Before Buying


      Muscle building supplements may help your pet grow strong, healthy muscles and improve their joints. However, you shouldn’t give these supplements unless necessary. With a healthy and high-protein diet, you may be able to build strong muscles in your dog without an added supplement.

      Yet, if your dog is growing weak even with a healthy diet, then you may need to try these supplements. Use these supplements if you intend to build muscles, stamina, and strength. They may also improve the immune system and increase activity levels. If you think your dog might need one of these supplements, consult your vet.


      If your pet is having some sort of nutritional deficiency then these supplements may help overcome that. You should get supplements that include those nutrients and target those specific deficiencies. More nutrients can help make your dog’s muscles stronger.


      Some great ingredients in muscle building supplements are protein, creatine, glutamine, and MSM. Some may also include glucosamine and chondroitin to help with joints. Before purchasing supplements for your dog, check the ingredient list to make sure it includes beneficial items. Natural ingredients are always a plus. Stay away from preservatives, soy, or wheat. Additionally, if your pet has allergies, you should make sure the product is free of those items.

      Bully breed in the water


      Are Muscle Supplements Good For Dogs?

      Yes, muscle supplements are an excellent choice when your pet is lacking their daily nutrients through meals. These supplements can be in a powder or tablet form. They’re great for maintaining joint health in senior dogs. They’re also an excellent choice for weak or sick dogs to help them grow stronger. However, you should consult your vet before starting any supplement.

      What Do Muscle Building Supplements Do?

      A muscle building supplement is quite popular among pet parents. It’s a nutritional supplement that contains a variety of vital minerals and vitamins necessary for strong bones and muscles. Muscle building supplements help your dog gain weight and grow stronger. Some supplements can help your pet’s immune system and give them more energy too.

      How Can I Make My Weak Dog Stronger?

      Giving your pet a healthy and complete diet is the first step to making them stronger. If your pet lacks energy and grows weaker, they might not be getting enough nutrients in their body. To cure that, you should include enough protein in their meals and offer them small meals frequently. Consider adding a muscle building supplement if their food alone isn’t helping.

      Are Muscle Building Supplements Only for Bully Breeds?

      No, muscle building supplements can work for any dog breed that needs to gain weight and strength. They’re typically advertised for Bully breeds because those breeds are generally more muscular than the average dog.

      Strong dog chewing stick


      Everyone wants a strong, youthful dog, and healthy muscles are the way to achieve that. Some dog breeds are genetically small, but any dog can benefit from more muscles if they’re growing weak or recovering from a sickness. In those cases, muscle building supplements for dogs are great resources.

      These supplements will give your pup healthy joints, robust muscles, and good overall health. Additionally, they will do wonders for your dog’s immune system and digestive system. So, these unique supplements could extend your dog’s life and make them more lively. However, like with any new supplement, you should consult your vet before serving it to your dog.

      Related: The 13 Best Heart Supplements for Dogs

      iHeartDogs is reader-supported. When you buy via links on our site, we may earn an affiliate commission at no extra cost to you.

      Recent Articles

      Interested in learning even more about all things dogs? Get your paws on more great content from iHeartDogs!

      Read the Blog