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Cosequin® Optimized with MSM

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Product Overview

Supports Healthy Joints & Cartilage

Cosequin® is the #1 veterinarian recommended joint health supplement brand*. Cosequin Optimized with MSM is a tasty powder containing higher levels of active ingredients compared to the original researched formula, with the addition of high-quality MSM (methylsulfonylmethane). This supplement is a convenient way to provide MSM along with the scientifically researched ingredients in original Cosequin.  When performance matters, choose Cosequin.

  • Joint Health Support for Horses: This supplement is formulated with glucosamine, chondroitin sulfate, and methylsulfonylmethane (MSM) to support joint health.
  • Optimized Formula with MSM: This supplement is a convenient way to provide MSM along with the proven ingredients in the original Cosequin formula.
  • Easy to Serve: Cosequin Optimized Equine Joint Health Supplements come in an easy to administer tasty powder.
  • Formulated for Your Horse: The researched ingredients in Cosequin work together to help protect the cartilage in your horse’s joints by supporting healthy cartilage matrix as well as inhibiting certain enzymes that break down cartilage.
  • Backed by Science: Nutramax Laboratories Veterinary Sciences supplements are veterinarian formulated with high-quality ingredients to support your horse’s joint health, no matter their discipline or performance level.
Also available as a pellet! Cosequin® Optimized with MSM Pellets

*Survey conducted among equine veterinarians who recommended oral joint health supplements. 

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Key Ingredients


Supplement Facts

Ingredient Name Amount Per Serving
Ingredient Name Amount Per Pound

Ingredient Details


Weight Recommended Amount Loading Amount

How the Ingredients Work


Supporting Success

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The reviews provided on this website represent the experience of the individual posting the review. We do not adopt, edit, or endorse any of the submissions posted within the reviews section. Rather, the reviews are part of an online community of animal owners that desire to share their particular experience with other individuals. These reviews are not a substitute for discussing the health of your animal with a veterinarian.

SmartPak customers are some of the most conscientious animal owners around. We encourage you to share your experience with the products we sell to help fellow customers to make informed choices for their animals. We do not edit these reviews in any way - they are direct customer-to-customer communication. We do monitor reviews for positive and negative feedback, and use this feedback to improve our selection as well as sharing feedback with product manufacturers to help them improve their products. Please note that we recommend consulting your vet with serious health issues.

Cosequin® Optimized with MSM is rated 4.8 out of 5 by 48.
Rated 5 out of 5 by from Love how this works My mare is 37 and has arthritis, I give her this once a day and she is so much happier!
Date published: 2019-05-28
Rated 5 out of 5 by from Amazing Product! My older guy, 27 yrs old, was unable to get up on his own. On the advice of my vet, I tried Cosequin. It's been a little over a month and voila! He not only gets up on his own but is back to his old fiesty self. Thank you Cosequin and Smartpak!
Date published: 2019-05-20
Rated 5 out of 5 by from A supplement staple in our barn Our horses have always been on Cosequin with MSM as a maintenance supplement, and I would never take them off! We have an older mare who requires no regular maintenance and two show horses (14 and 15) who do not require maintenance either. It is a barn staple and I would highly recommend it to anyone looking to place their horses on a joint maintenance supplement.
Date published: 2018-10-24
Rated 5 out of 5 by from Seems to Help Prevent Arthritic Stiffness I've used Cosequin for years for my older horses and it seems to be effective in postponing the effects of arthritic stiffness and lameness. The horses are happy to eat it with their pelleted feed.
Date published: 2018-10-16
Rated 4 out of 5 by from Cosequin We bought this on recommendation of other fellow horse owners of approaching senior horses. Our Mojo seems to move around around a bit more since we started him on Cosequin - i would recommend your try it.
Date published: 2018-08-22
Rated 5 out of 5 by from Great product to help keep your horse feeling good I have used Cosequin for many years and although I have tried other joint supplements, I always come back to this one.
Date published: 2018-08-13
Rated 5 out of 5 by from GREAT tasting... horses eat it up! Recommended by our Veterinarian. I am glad that I took her advice! They love the product and are moving better.
Date published: 2018-02-26
Rated 5 out of 5 by from Really like this product! My 19 year old OTTB has been on Cosequin with MSM for about a year now, he is more comfortable and moves much better. Before I started using Cosequin, he was stiff and his joints popped!
Date published: 2017-07-25
Rated 5 out of 5 by from This has made a huge difference in my horses joint health
Date published: 2017-06-28
Rated 5 out of 5 by from I bought this for my 16 year old gelding with joint problems and he seems to be so much more comfortable!
Date published: 2017-03-13
Rated 5 out of 5 by from Works well on all horses I use this on my performance horses and my retired horses as well.
Date published: 2017-01-09
Rated 5 out of 5 by from Noticed a HUGE difference in my horse! I have always used Cosequin ASU and found it worked really well for my horse. Recently, I switched to the MSM formula and noticed my older boy was moving much free-er. Over two months, I've seen a huge difference in warming him up.
Date published: 2016-02-09
Rated 5 out of 5 by from Totally worth the money! My barn manager recommended this for my new horse, she has had a lot of success with it so I decided to give it a try. My new horse Fagan who is a 13year old 18 hand Hanoverian gelding has never had any problems with his joints. So Fagan has been on Cosequin Optimized for almost a month and I like knowing he is moving comfortably now that we are moving up to third level dressage work.
Date published: 2015-05-22
Rated 4 out of 5 by from my equine vet says it's a great product seems to be keeping my 20 yr old nsh very spry…only problem is that he doesn't care for the apple flavor! i find ways to get him to ingest it tho!
Date published: 2015-02-13
Rated 5 out of 5 by from Excellant product I've had both of my show horses on this product for quite awhile. I've seen the benefits in both my 20 year old, that's still going strong in the showring, and my six year old, who is still growing. Great product!
Date published: 2015-01-12
Rated 5 out of 5 by from Product works well. Price was very good compared to other stores. Vet recommended it. My horse eats it well.
Date published: 2014-11-29
Rated 4 out of 5 by from Try it My mare wouldn't eat this, so frustrating. After some trials and errors I found that if I put it on a little senior feed that it sticks to and mix it over her feed she eats it. It took a while though so stick with it.
Date published: 2013-12-31
Rated 5 out of 5 by from Great Product My horse is 23 and is doing great. I have used this product for about a year. He had some injuries in the past but you would never know it. He acts like some of the younger horses in pasture.
Date published: 2013-04-18
Rated 5 out of 5 by from All better! My farrier recently suggested I put my horse on cosequin and when I started looking into it I felt this is what would work best for her for the price. I did have to up her grain in order for the supplement to have enough to cover and at first my mare wouldnt touch it. She slowly got over it and decided it didnt taste too bad. Since being on it shes been running and playing a lot more. Shes had the winter off so I havent been able to see about the difference under saddle.
Date published: 2013-03-07
Rated 5 out of 5 by from Great Product i can recommend this product,have been using it for my 23 old mare when she showed first signs of arthritis.cosequin made a real difference in the way she moves.
Date published: 2012-12-25
Rated 5 out of 5 by from Totally impressed. I had never tried a Cosequin product before, but decided to go with this one due to its apple flavoring. I must say I have noticed a big difference. My horse had a fluid pocket drained around his hock and chestnut area, and my vet recommended I put him on a joint supplement just to cover our bases. Not only have I noticed more "free" movement in his ouchy hock, but I have noticed it all over- he's swinging his shoulder, has no trouble with turns on the forehand, and he's seemed overall more flexible and willing to stretch his body. I'm totally impressed with this product and I'm SO happy I put him on it. Only gave it a 3/5 for palatability because it is in a powder form, and so I have to mix it with a handful of sweet feed before I put it into his dry pellet feed or else I'm not sure he'd eat it up (my boy likes to dump his feed and then pick it out of the sawdust). I wish there was a pelleted version- I may switch to another Cosequin product for this reason alone.
Date published: 2012-11-22
Rated 5 out of 5 by from Cosequin/ MSM Works for Navicular relief My 23 yr old ASB has the mysterious heel pain syndrome that used to be called navicular. He became "ouchy" when he was 7 so I have used all of the cosequin products over the years. In his case, along with a very good barefoot trim, and 24 hour turn out, the MSM version seems to work the best at keeping him riding sound and comfortable. It really makes a difference. I started using Cosequin originally because they had an actual research study available for review. I have experimented with other similar products but have always come back to Cosequin. At 23 he still really wants to gallop a field with me so it probably helps with any osteoarthritis as well.
Date published: 2012-09-26
Rated 5 out of 5 by from I love this supplement! This is the best supplement ever! My horse is 18 and he has arthritis but because of cosequin his joints feel amazing and he can still jump and do dressage! I've had him on this for 3 years.
Date published: 2012-06-26
Rated 5 out of 5 by from Keeps Him Going My police horse is now 22 years old, and the Cosequin has added many years of service to his career. He goes out in the morning just as peppy and smooth as the youngsters he is with. I am very happy with this product and the results I have seen.
Date published: 2011-02-09
Rated 5 out of 5 by from Skeptic I was told by my vet to choose between this and another product. I didn't want a powder because it is expensive and he can just blow it right out of his feed bucket. But I chose this one because it has MSM in it to help with respiratory problems. I started using it and my horse is making leaps and bounds everyday. He is completely sound, he quit dragging his hind legs, and he actually wants to work instead of finding things to spook at because he doesn't want to work. He never refuses and he has become an awesome hunter. He tends to get quick and moving a little too forward(because he is no longer sore) but we are working through that. I do reccommend putting either oil or water in their feed with it because it helps the powder stick to the food but only moisten the food right before they eat it. He has made a complete transfromation but now he is going on SmartCalm pellets.
Date published: 2010-11-30
Rated 5 out of 5 by from COSEQUIN Optomized tHIS PRODUCT HELPED MY HORSE USE HIS HOCKS JUST AS WELL AS HOCK INJECTIONS. He hasn't needed them in over 1 1/2 years! He no longer drags his hind toes and is able to engage his hind end more easily. To see him so comfortable makes me very happy as it seems he is a lot happier in his work.
Date published: 2009-12-05
Rated 5 out of 5 by from Cosequin Optimized MSM My Vet recomended feeding a supplement for joint health and matience. His educated opinion was to stay with the Cosequin products. He felt that there was definate evidence that these products produced positive results. He also advised me that there are many popular joint supplements that people believe in and word of mouth is they work but NO real proof that they do. Additionally, I understand that the Cosequin ASU works wonders if you are having joint issues. For now I am using the Optimized for daily health and matience. Ashley Bolen
Date published: 2009-10-22
Rated 5 out of 5 by from Cosequin Optimized With MSM This is a powerful supplement that has been very effective with my Morgan stallion who does dressage. We started using this supplement after his hocks became sore. His hocks respond very well to it & we will not be without it! Good value & great impact!
Date published: 2009-09-28
Rated 5 out of 5 by from good product This product though pricey does what it says it does and is worth the cost. my two eventing horses stay sound and happy.
Date published: 2009-07-21
Rated 5 out of 5 by from Healed!!! This is the best purchase I've ever made. I bought a beautiful quarterhorse who was doomed because of arthritis in his back hocks. Only 7 years old, but all of the sudden nobody wanted him. My vet advised I not buy him. Said he should be unshod, put to pasture for at least 6 months, then re-evaluated to see if his hocks had self fused. They gave me the disk with his x-rays on it. This is the first and only horse I've ever owned. I bought him anyway, researched my options, and started him on Cosequin optimized with MSM. He was more comfortable in a matter of weeks. I then rode him, gently, no jumps, and loved him, and made sure he had the correct amount of cosequin in his feed bags everyday. After a year and a half I decided to get him re-x-ray'd to see how things were going. The vet first flexed him, which went surprisingly well, then reviewed the prior x-rays. We discussed injections and so forth. Then we did the new x-rays. He is well! No other way to put it! The vet was dumbstruck. The space is there, the gaps are gone, and he is an awesome, valuable, ready to get in tip top shape horse! He will always be my baby, but I feel vindicated to say the least! I'm now known as the horse nurturer at the barn, instead of that crazy woman who doesn't know what she is doing. I'm keeping him on the Cosequin forever, but want to say to everybody out there with a horse you love who is suffering from arthritis - try this stuff! It takes some patience and some discipline, but you will be amazed at the results.
Date published: 2009-06-09
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