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MADE IN USA
Based on 500+ Reviews
Reverse Age-Related
Muscle Loss in Dogs
Help your fur-baby feel like a pup again with a natural & delicious Muscle Building formula
improve muscle mass and shorten recovery times
increase energy & vitality
irresistible pork-liver flavor
formulated with clinically studied my HMB®
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improve muscle mass and shorten recovery times
increase energy & vitality
irresistible pork-liver flavor
formulated with clinically studied my HMB
Featured by leaders in pet wellness:
Results in 30 Days Or Your Money Back
Join the thousands of others reversing their dog’s muscle loss with Fifth & Fido
Unlocking the Secret to Canine Longevity:
The Power of Muscle Building
Fifth & fido Muscle Builder is a blend of natural ingredients designed to deliver the nutrients your senior pup needs to thrive.
Enhanced Endurance
More playful moments, longer walks, and cherished quality time together, easing worries about decline.
Muscle & Strength
Mobility improves, preventing falls, supporting joint health, and promoting the vibrant, active lifestyle you both enjoy.
Faster Recovery
Bounce back from injuries, surgeries or playtime quicker, reducing worries about discomfort and downtime
Joint Support
Help your senior dog move with ease, reducing stiffness and discomfort, allowing for more enjoyable time together.
3 Simple Steps To A Healthier, Happier Pup.
Simply Scoop. Mix. Serve.
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Vet formulated
Made in the USA
Limited Ingredient
NASC Certified
Loved by Pets. Approved by Vets
The Top 3 Signs Your Senior Dog May Need Muscle Building Support
Nothing is more heartbreaking than watching your beloved fur-buddy struggle as they age. There’s a solution to restoring muscle loss and improving strength for a better quality of life and more tail wagging long walk days. Heres the top 3 signs to look out for in senior dogs:
Results in 30 days or your money back
for a limited time only subscribe & save up to 42%
fifth & fido Muscle builder formula
The delicious way to combat age-related muscle & mobility decline in senior dogs.
Fifth & Fido Muscle Builder
The delicious way to combat age-related muscle & mobility decline in senior dogs.
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Dosage Guide
Dosage Chart
Dosage Guide
Active Ingredients
Body Weight
Scoop Per Day
For Petite Paws
Up to 24 lbs.
For Mid-Sized Mutts
25 to 50 lbs.
For Grand Canines
51 to 72 lbs.
Ingredients
Supplement facts
Guaranteed Analysis Per Scoop
Min.
Calcium HMB (as myHMB)
415mg
Vitamin D3
110IU
Inactive Ingredients: Citric Acid, Hydrolyzed Vegetable Protein (soy), Molasses (dried), Pork Liver Powder, Safflower Oil, Sucrose, TBHQ, Vegetable Fiber (soy), Whey powder (dairy).
Money Back Guarantee
If you're not delighted with your pet's newfound energy, muscle, mobility and zest for fun we'll offer a full refund, no questions asked.
Dont Just Take Our Word For It
Here’s What Our Customers Are Saying About Muscle Builder
Based on 500+ Reviews
The science of longevity
Behind our unique formula: science-backed, proven and patented ingredients
MyHMB
The primary component of our muscle builder, HMB, occurs naturally in both humans and animals and impacts muscle mass, fat reduction, energy levels, and recovery.
For your senior dog, their food alone might not provide enough HMB to support their aging body. Adding a supplement ensures they get all the benefits they need to stay healthy and happy in their golden years!
myHMB, the patented version of HMB, boasts more than 50 clinical studies and holds 6 US patents.
myHMB, the patented version of HMB, boasts more than 50 clinical studies and holds 6 US patents.
Prevents age-related muscle loss
Increases lean muscle mass and strength
Speeds post injury & surgery recovery
Reduces muscle soreness and joint pain
Boosts energy and endurance for longer walks
Vet formulated
Made in the USA
Limited Ingredient
NASC Certified
Because Strong Dogs Make Stronger Bonds!
what to expect when your pup starts using muscle builder:
Join The Thousands Of Others Who Reversed Their Dog’s Muscle Loss And Signs Of Aging With Fifth And Fido
Based on 500+ Reviews
Results in 30 days or your money back
for a limited time only subscribe & save up to 42%
Got Questions?
we’re here to help.
How quickly can I expect to see results?
While best results are seen after 4 weeks of consistent use, some customers reported improved symptoms as early as week 2
Can all breeds of dogs & cats take this?
This formula is safe for pets of all breeds and sizeds. Should you have specific questions about mixing supplements you should consult your veterinarian
Will this work for senior dogs?
Yes! While safe for any age, the formula is a favorite among dog parents with senior aging dogs
Is it returnable if it doesn't work?
If you're not delighted with your pet's newfound energy, mobility and zest for fun we'll offer a full refund, no questions asked.
What is the proper dosage for my dog?
This product should be administered according to the dosage on the packaging. A little goes a long way
I can't keep up with my dogs new found energy thanks to Muscle builder....can I take it too!!??
We feel your struggle! While Muscle Builder was formulated for pets - theres so much research on the benefits of MyHMB for both canines and humans - its worth looking into a supplement designed specifically for you
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Based on 500+ Reviews
Stephanie C. | Verified Buyer
My senior dog gained some pep in his step
My guy is turning 12 this year. He is in great shape and spirits for his age, however the last 6-8 months I’ve noticed his back leg muscles were losing mass and he was much more wobbly when we went for walks.
I started him on this product and after 2 months, there is a noticeable difference in his energy levels and physical ability. He is playing with his younger sister more often, he is in higher spirits, and he is getting stronger and less wobbly every day with his walks.
Christine | Verified Buyer
My dog is visibly better looking and more active
This product has been amazing for our dog! He is 4 years old and we work out of the house most days. Since starting this muscle builder supplement for dogs, he's visibly better looking and more active!
BoxerDogMom | Verified Buyer
Great supplement!
This is a great supplement for senior dogs. My dogs are thirteen and fourteen years old. The fourteen year old has had health problems that have made him lose a lot of weight and muscle mass recently. This is the first time that I have tried a supplement like this. They regularly eat hard food and they didn't like having the powdery substance on the surface of their food. It seemed to make one of them cough and the other one didn't want to eat his food with this on it. I tried adding it to soft food and blending it in. They love it like that. They see the soft food as a bonus to their diet and they have had no negative side effects from it. I haven't seen any major changes to my dog. He isn't losing any more weight, so that is a bonus. I plan to continue to give them this. I think that it is worth trying especially for dogs with health problems.
Stephanie C. | Verified Buyer
My dog is visibly better looking and more active
This product has been amazing for our dog! He is 4 years old and we work out of the house most days. Since starting this muscle builder supplement for dogs, he's visibly better looking and more active!
Christine | Verified Buyer
My picky dogs love this!
My dogs are so picky with food and treats, but my they can’t get enough of this supplement! They try to eat it right out of the scoop! So glad they’re getting nutrients from something they love!
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