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💥 Unlock your dog’s prime with every scoop — because aging is optional!
MYOS Canine Muscle Formula is a 360g all-natural muscle builder powered by Fortetropin, clinically proven to reduce muscle loss and support joint stability in dogs of all ages. Trusted by vets and backed by 14 studies, it enhances strength, mobility, and recovery with a clean, palatable powder that fits effortlessly into your dog’s daily routine.



















| ASIN | B07GY12825 |
| Allergen Information | Eggs |
| Best Sellers Rank | #2,073 in Pet Supplies ( See Top 100 in Pet Supplies ) #32 in Dog Hip & Joint Care |
| Brand | MYOS CANINE MUSCLE FORMULA |
| Brand Name | MYOS CANINE MUSCLE FORMULA |
| Customer Reviews | 4.4 out of 5 stars 2,001 Reviews |
| Dog Breed Size | Large |
| Flavor | Other |
| Item Form | Powder |
| Item Weight | 360 g |
| Manufacturer | MYOS Rens Technology Inc. |
| Manufacturer Part Number | FP-M-01 |
| Model Number | MCMF |
| Specific Uses For Product | Joints |
| Target Species | Dog |
| UPC | 851701006705 851701006477 |
| Unit Count | 12.7 Ounce |
E**E
Works Really Well - Made a Noticeable Difference in 13yo Husky in Under 2 Weeks
It's only been a 1.5 weeks but I'm so happy with my purchase!! I have a 13-year old husky who was always really active and healthy but lost a lot of muscle (and mobility) in his hind legs almost overnight when he turned 13. He was struggling to get up our stairs and struggling to get up when laying down. He had visible muscle loss around his hips, too. Literally one week of this supplement (I do three scoops a day, he's 56 pounds) and we can notice a big difference in his physique and mobility. We went out of town for the week and had a dog sitter giving it to him, and when we came back I couldn't believe the difference. His hips have filled back out almost to what they used to be already, he's walking faster and starting to pull us again like he used to. He does the stairs a lot easier, too. His fur is also shinier and healthier looking. We ran into a friend today who said that she could tell the difference! Another huge bonus for us is that he actually likes it. Our husky is super duper picky (I've baked supplements into beef meatballs before and he wouldn't eat them) but I guess because this is egg-based, he licks up every speck without us even having to mix it into anything. That was unbelievable to me because I was afraid of how hard it was going to be to get him to eat this supplement. I'm extremely happy with my purchase and excited to see how he continues to improve since it hasn't even been two weeks yet. Very much worth the money to me!
L**G
Great product, poor delivery
The MYOS really made a difference for my dog. I don’t know about muscle regrowth, but he was more alert, wanted to play more, and gobbled up his meal, so the taste didn’t bother him. Noticed a difference in behaviors within two weeks and it was a little gradual. Amazon fulfillment, I would give 0 stars for this order. They said they attempted to deliver it, but it never left the facility then the order didn’t come the next day, and instead of contacting us, they just canceled the order. The product worked so I went ahead and ordered it again, but you can get the product from the company and maybe elsewhere if further problems arise.
J**E
Works for senior dog
Dog loves the taste. It works well for a 10.5 year old dog with arthritis. He has been on treatments and supplements for his joints, but this supplements on muscles retain his current muscles pretty well. Saw an improvement on his mobility when he became more willing to run around. Pricy but will continue to purchase
C**S
Jury's still out on this product... 3.5-4 Stars at this point...
** Jan. Update Cont. ** Raised to 4 stars for the incredible customer service we've received from MYOS. With their support, we are continuing the Fortetropin & hoping for quality of life improvement. We are not in the market for creating an immortal dog. Unfortunately, they just do not stay with us long enough. Our primary goal is comfort through the aging process, and mobility. We do not have a definitive diagnosis on what's causing the muscle loss in his legs (primarily back legs, and front legs but to a lesser degree). My gut tells me that this product provides significant support to dogs convalescing from surgery or illness - and I would encourage you to give this product a try! For chronic illness/disease - I think the most rational goal to aim for is comfort and slowing down decline. This is what we're hoping for, and I'll continue to update. Our thanks to MYOS for helping us continue w/this product & their great customer service. Tip: I've found it mixes best with canned food that has NO gravy or liquid. It has a course parmesan-cheese consistancy/texture, and mixes better with a "pate" style dog food. It has no flavor or aroma - and our dog has no sense that it's in his food (or else he'd turn his nose up at it). If your dog is on kibble - add warm water to the food to soften (plus dogs just like it, and hydration is so important) - then sprinkle on top. I've also taken a high flavor canned food (for fun, not part of his regular diet), combined a spoonful with the fortetropin, and created meatballs (when he was on a prescription food that was somewhat soupy). *January Update* - we were unsure of whether or not to keep going, but will continue with Fortetropin - and stay hopeful that we can see more significant improvement. I want to report that one important thing to note is that our dog has not declined since being on this product. Improvement, so far, as been slight. As we continue with Fortetropin, I plan to get our veterinarian involved to help document any changes at this point, and will share the results here. I see so many people reviewing this product with the same hope that we have - and I think sharing our results is so important. I continue to recommend that people at least try this product - as it could just be that certain conditions will respond better than others. Stay hopeful! :) Just completed our first container of this product. My 12 yr old collie has had declining muscle control in his back legs for the past few years that has come to a point where support (nutritional, medication, supplement, etc) is required. He has not been diagnosed with Degenerative Myelopathy at this point, and we suspect it has more to do with a spinal condition. That said, the atrophy is significant, especially surprising in his front legs (given they're providing much of the support for his body at this time). Pros: It didn't cause stomach upset, it was easy to administer/mix into food, and there could be a slight amount of increase in muscle mass, but it is VERY slight. Cons: Extremely expensive. I don't think it was a waste of time or money to try this - and I would encourage people to give it a go (it can't hurt). In our case, however, the improvement was not so notable that I am clamoring to buy the 2nd container. Still contemplating it at this stage. I will continue to update. I would rate it 3 1/2 stars at this point, but will change this rating if we see more noticeable improvement.
A**R
Great supplement for our 11 years young pup
This supplement has made all of the difference in our senior pup. At 11 he started to lose weight faster and faster, muscle too. We decided to take a chance on MYOS. It has been 3 months now and I can say that he has retained muscle that he had and even has gained a little. We did gradually introduce it and mixed it in with his food. Seems to like the taste and hasn't had any digestive issues with it.
M**D
Very good support for older dogs with muscle weakness
This product is amazing! My older Old English sheepdog had weakness in his hind legs in addition to some osteoarthritis. I found this by accident and read the reviews so I started him on it. After two months on it my Vet was amazed at how much better he was (I'm not talking about jumping fences or running for miles but there was a significant improvement in his mobility and ability with his hind legs). My vet had never heard about it before but he started recommending it to other dog owners. Bear lived comfortably for another two years. It's definitely worth a try.
J**K
Likely effective, but caused pancreatitis.
My vet recommended for our elderly Yorkie. I should have checked for possible effects aside from building muscle. It has very high fat content. She developed pancreatitis within a few days of starting, even at a much reduced dose.
M**R
Definately works to regain muscle loss due to age/injuries. Noticed difference at 2 months.
I honestly didn't think this product would work and wondered how could fertilized age make a difference. The first month I saw little change but decided to give it another month before making a determination of the efficacy. At 1.75 months I thought I noticed a change in my dog's (Diesel) muscles. She has gotten bony in the hind end and along her lower spine. She has been having shakes or tremors in the back legs which had slowly gotten worse over several years. It effected how she ran, stood, etc. People always thought the shakes were from fear which was not the case. I thought she might have some spinal issue so took her to a Chiropractor that works on dogs. The Dr. adjusted her in a number of places along the spine and her tremors lessened a little. I started the supplement right after Diesel's first visit to the Chiropractor. At her second month visit the Dr noticed, as I had, that she appeared to have regained muscle in her back legs and along her spine. I told the Dr that I too thought I had noticed a change and she was regaining her strong, "beast-like" former strength but was afraid of just being hopeful. The Dr said that I was not imagining a change and that she too noticed a difference in Diesel's back leg muscle and muscles along the spine. Diesel just was not as bony as before. I gave the supplement at about 75% of what was recommended (3 scoops v. 4 scoops) due to it's expense. Even at this slightly lower dosage Diesel still gained enough muscle for both me and the Dr to notice a substantial difference. Now at three months of use Diesel has gained several pounds, the majority of which is muscle and not fat. Some other supplements have so much fat in them that the dogs will gain fat v. muscle. That is not the case with this supplement. Diesel lumbers when running when she gains a few pounds of fat so I know muscle was added as her performance has improved even thought the scale shows a 3 lb gain. I attempt to kept her weight at 62 or 63 lbs. Lean dogs live longer and healthier lives. One does need to adjust the food proportions the account for the added calories of the supplement so as to assure any weight gain is muscle and not added fat. But I am so please with the muscle gain in my nearly 10 yo dog that I am starting my 8 year old on it too. The younger dog, Quinn, doesn't yet show any muscle loss but I decided to start her on this supplement as a preventative (at a lower dosage) since nearly all older dogs loose muscle mass especially in the hind end . This causes difficulties in walking, running and rising up off the ground. Then they become weaker and weaker. Yes, it is damn expensive stuff but it is the ONLY supplement I have tried, and I have tried a number of the common brand, that has actually done what it says it will do. I have not studied or asked the company if this is a life-time supplement or not. Afraid if I stop now that Diesel has regained muscle mass she previously lost that were I to stop she might loose it again. I would highly recommend this supplement and just ordered my 4th month container. Be patient and give it at least two months before deciding whether it is worth it or not to continue. IMO it works. I wish I had taken some comparative photos. The attached photo is at the start of supplementation. If one looks closely one can see her leg muscles are not a pronounced as they should be. However, the best way to tell is to just feel the muscles when you start and at the end of each month of supplementation.
M**S
It's helping my elderly dog - excellent supplement.
My 14.5y.o has osteoarthrosis and whilst he takes a range of joint care supplements, because his exercise is now not as extensive as it once was - his leg muscles aren't as strong these days. A month of being given two scoops of Myos daily, easily mixed in with his food, I can certainly see the benefit and will continue to administer it. It is a little costly due to being imported to the UK, but for us worth it.
D**A
Miracle supplement
Our dog has muscle wasting due to steroids for an autoimmune disease, she couldn’t handle stairs, jump into the car, get on the bed and she was looking scrawny in her back end. This was recommended by our vet and what an amazing turn around! Our beautiful old girl now has a little meat on her bones, strength is much better and poops are the best they’ve been her whole life! This is a miracle supplement. Thank you so much for giving my dog a few years of quality life.
M**U
Très efficace et livraison rapide
Ce supplément apporte vraiment un soutien au niveau de la musculation de mon chien vieillissant. Que dire de la livraison on me promettait la livraison dans une semaine, je l’ai reçu 2 jours après l’avoir commandé. Je suis super satisfaite!
M**A
Excellent Product. Buying Again Definitely
We used MYOS muscle supplement for our dog after a recent injury when he was having difficulty walking, getting up on his own and climbing stairs because of weak muscles. After using it regularly, we noticed a very good improvement in his strength and mobility. He is now able to get up more comfortably and move around much better. The product quality is excellent and our dog had no side effects at all. Very happy with the results and would definitely recommend it. We will be buying the bigger pack next.
K**N
Haven't noticed anything yet!
We were told to try this for our Pomeranian with 2 ACL tears we haven't yet seen any improvement but still early so will update of something changed.
Trustpilot
1 week ago
2 weeks ago