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SmartFlex® IV Ultimate Pellets Original

SmartSupplements by SmartPak — Item #18293
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Joint support backed by clinical research

  • High levels of the major ingredients for joint, tendon & ligament health
  • Our exclusive super fruit blend, BerryPlex, plus resveratrol offers powerful antioxidant support
New & improved taste horses love! Uncompromising joint and connective tissue support for the equine athlete at the top of his game. SmartFlex IV Ultimate provides an unrivaled combination of the most powerful ingredients for joint, tendon, and ligament health, including 10,000 mg of glucosamine, 1,000 mg of chondroitin sulfate, 150 mg of hyaluronic acid, 500 mg of cetyl myristoleate, 10,000 mg of MSM, 500 mg of silica, and 1,000 mg of collagen.

Designed to support elite performance horses in intense work, this formula also includes 1,000 mg of resveratrol, the potent antioxidant found in red grapes, to help neutralize the damaging free radicals that are released during times of stress or heavy activity. Additionally, our exclusive super fruit blend, BerryPlex™, combines the antioxidant power of pomegranate, cherry, acai berry, goji berry, blueberry, and cranberry. Finally, a joint supplement that works as hard as your horse. 

View Clinical Research on SmartFlex IV Ultimate Pellets

View Our Joint Supplement Comparison Chart 

View Our Comfort Supplements Comparison Chart

Find your horse's SmartFlex


Active Ingredients per 80 g:
(Maintenance Dose = 2 scoops (80g) daily)
  • Glucosamine HCl (shellfish)
    10,000 mg
  • Methylsulfonylmethane (MSM)
    10,000 mg
  • Ascorbic Acid (Vitamin C)
    5,000 mg
  • Chondroitin Sulfate (bovine)
    1,000 mg
  • Hydrolyzed Collagen
    1,000 mg
  • Resveratrol
    1,000 mg
  • Omega 3 Fatty Acids
    520 mg
  • Silica (Orthosilic Acid and Magnesium Silicate)
    500 mg
  • Cetyl Myristoleate (11% Cetylated Fatty Acid Complex)
    500 mg
  • Pancrelipase
    200 mg
  • Sodium Hyaluronate
    150 mg
  • BerryPlex™ (a proprietary blend of Blueberry Fruit Powder, Cranberry Powder, Acai Berry Extract, Goji Berry Extract, Pomegranate Extract, Tart Cherry Powder)
    600 mg
Inactive Ingredients:: Alfalfa Meal, Corn Distillers Dried Grains with Solubles, Lignin Sulfonate, Maltodextrin, Sodium Propionate, Stabilized Flaxseed Meal, Vegetable Oil (cold pressed).


Instructions for Use:
Horse Weight Recommended Amount
Under 500 lbs. 1 scoop
500 - 1000 lbs. 2 scoops
1000 - 1500 lbs. 2 scoops
Over 1500 lbs. 3 scoops
Directions for Use: Administer 80 g daily, 1 scoop = 40 g (2 scoops daily)


SmartFlex IV UltimatePellets

Clinical Research

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    SmartFlex® IV Ultimate Pellets Original is rated 4.7 out of 5 by 81.
    Rated 5 out of 5 by from Worth every penny My horse has been on this product for over a month. I have seen a big difference in his comfort level. He has arthritis in his hocks and this joint supplement has helped him to move better. It's very much worth the price
    Date published: 2017-05-17
    Rated 5 out of 5 by from Worth the Price Both of my boys are in their late teens, and are starting to get a little creaky, especially my Thoroughbred (he had kind of a rough life before we got him). Both of them are doing really well on this. Their recovery after their workouts is much quicker, and I don't hear any creaking anymore when I pick their feet. I've never seen a joint supplement make that much of a difference that quickly. They will be staying on it long term. It's definitely worth the price. SmartPak makes excellent supplements.
    Date published: 2017-05-09
    Rated 4 out of 5 by from Nice but expensive I've had my older horse on this supplement in the past and just recently had my younger one on it for a couple months. I think its a good supplement that they both will eat with quality ingredients, but I just don't notice enough of an improvement over the Resilience formula to justify the cost. It certainly does it's job, but I'll just stick with the Resilience formula for my horses from now on.
    Date published: 2016-12-29
    Rated 5 out of 5 by from Fantastic! After one month I noticed a huge difference in my apps movement. He had an old injury to his suspensory tendon that didn't heal as intended, but what a difference; he moves so nicely and it's rare to hear his hocks pop and crack anymore. I couldn't be happier!
    Date published: 2016-12-23
    Rated 5 out of 5 by from great breeches My horse has been on SP digestive supplement for awhile and is doing great with the product. So, when decided to add a joint supplement I felt confident this would just as good! Great to have everything in one package and at a discounted price plus addition of hoof and coat!
    Date published: 2016-08-17
    Rated 5 out of 5 by from Good prevention Upgraded from Smart Resilience 3 to prevent issues during a conditioning and training program. My horse is injury free.
    Date published: 2016-08-06
    Rated 5 out of 5 by from Wonderful Truman is moving better than ever after being on for two months
    Date published: 2016-06-23
    Rated 2 out of 5 by from horse would not eat it I tried several ways to hide this in her feed, to no avail. She just would not eat it. Thankfully, Smartpak gave me a refund.
    Date published: 2016-06-06
    Rated 5 out of 5 by from Great product My horse is a picky eater, but eats this with no hesitation. Seems to work better & not as anxious.
    Date published: 2016-05-13
    Rated 4 out of 5 by from Trial Run I am really happy with the trial period SP runs for supplements but I believe it would've taken longer than 2 months to see any results and unfortunately I couldn't stomach the price with all of the corrective shoeing and vet visits I've had to pay for. I can't really say that it helped much.
    Date published: 2016-05-03
    Rated 5 out of 5 by from Great Joint Supplement for the Competitive horse This is an easy to give all encompassing supplement. I used to give each of these separately. With a horse on the road showing, this is a constant in his regimen.
    Date published: 2016-05-02
    Rated 4 out of 5 by from Everything joint plus Resveratrol Bought a OTTB 14 year old mare end Aug 2015 and started Smartpak IV as a preventativeJan 2016 highly recommended by my coach. It has everything including HA Resveratrol and Omega 3 as work over fences and suspension has become more demanding. She's required treatments or imprint injections and is pain free and blooming. It is expensive but if you breakdown the ingredients I'm looking for by any reputable source its on point
    Date published: 2016-03-26
    Rated 5 out of 5 by from Great results I bought this on the recommendation of my vet. This has helped my 15 year old gelding continue to be competitive in the dressage ring.
    Date published: 2016-03-23
    Rated 5 out of 5 by from Love Smartpak I trust Smartpak to provide the highest quality products and they also have terrific customer service.
    Date published: 2016-03-17
    Rated 5 out of 5 by from This stuff works miracles! I've been using this in my 17 year old paint for two months. He has been shown hard all his life and has had hock and stifle lameness for a year and a half. I was ready to retire him but I thought I'd give this a shot. i just got off of him after a two month rest and he had NO SIGNS OF LAMENESS OR STIFFNESS. I had him on every mixture of supplements you can imagine for probably seven years and this WORKED. You won't regret trying it!
    Date published: 2016-03-09
    Rated 5 out of 5 by from Really great product for horses with special needs We use this on a horse that has off and on soundness issues and is chronically cold backed. It has helped him move freer and warm up more quickly. This is also very palatable so we know he is eating all of it!
    Date published: 2016-02-08
    Rated 3 out of 5 by from Smart Flex IV Ultimate Pellets After a month there was no noticeable improvement. For the the price and claims about this product, I expected my farrier to tell me that the gelding was not as stiff as he had been. The farrier advised that he might have seemed slightly better, but the improvement was so minimal, he was still difficult. She provided me with the name of a product she uses and I will probably order that and stop the auto deliveries.
    Date published: 2016-02-02
    Rated 5 out of 5 by from Worked very quickly I have been feeding the Resilience III pellets with very good results, but lately noticing a bit more "snapping and popping" sounds coming from my girl's joints (hock and/or stifle) before and after work. Thought it might be of benefit to up the ingredients, so started her on the Smartflex IV Ultimate pellets. Very quickly stopped hearing any noise.
    Date published: 2015-12-02
    Rated 5 out of 5 by from Wonderful product! I have been giving this in combination with the Bute-Less pellets and I am so thrilled with the results! My mate has been on them for about 2 months and I can see and feel a huge improvement! Not only in her back end which used to be so stiff and uncomfortable for but in her attitude to! She enjoys her work so much more and I'm so happy with my purchase!
    Date published: 2015-10-24
    Rated 5 out of 5 by from Vey pleased so far! Danny is startign his 2nd month on the SmartFlex IV pellets. It has everything I could want in a joint product - at (or higher than) the levels need to be for optimum results. I also like the extras like biotin, pre & pro biotics, omegas etc.
    Date published: 2015-09-08
    Rated 5 out of 5 by from Excellent product
    Date published: 2015-07-31
    Rated 5 out of 5 by from Amazing Results My horse loves this product and so do I. He has already improved so much!!
    Date published: 2015-06-29
    Rated 5 out of 5 by from This stuff really works - I've tried different joint supplements over the years and never really thought that they did much, however, the difference in my 2 older driving large ponies after just a week on this supplement was significant. One is 21 and would be retired without this. Gait is more fluid, and desire to work has increased to feeling like her old self. She has been on it for a month. I will be stepping down to level III to save a little money and hope it works nearly as well, but would go back to this if not. Time will tell. Only negative is price!
    Date published: 2015-06-20
    Rated 5 out of 5 by from Love this product! This is our second month on this product.it is working great on our triple regigered show horse . We started with the bulk bag but now have the a smart pack and it's do easy at feeding time!
    Date published: 2015-06-13
    Rated 5 out of 5 by from AH-mazing, no really, I'm not kidding. Starting using this product 3 months ago. Gave up on Cosequin which my arthritic mare had been on for 5 yrs and honestly, there were zero changes while on Cosequin. Even if the Cosequin were merely for maintanence, I thought it wouldn't hurt to try something different. So I researched and read all the ingredients in the Smartflex IV and figured I'd give it a try... really, what's the worst, I'd have to go back to Cosequin? Here it is 3 months later and my usually lame 10yr old OTTB is as sounds as can be... it's something short of a miracle. I'm at the point where I have to whisper my excitement for fear of it coming and biting me in the keister. Will this work for every horse? Don't know. Does it work for my horse? Indeed, it does. My mare is SOUND and eats the Smartflex IV up. Need I say more?
    Date published: 2015-04-28
    Rated 5 out of 5 by from Soundness I like what I saw in the ingredients in this product and think it will be the ticket to help keep my barrel horse running and turning for years to come
    Date published: 2015-03-05
    Rated 5 out of 5 by from Awesome and effective Have had multiple horses on the product at this point. But first tried it with a middle aged event horse that I never found a huge difference in any of the supplements he was previously on. Went into the retail store back when the smartsupplements first came out after trying everything on the market and was offered a first month discounted and money back guarantee and have never looked back! I suggest the supplement in its various levels to friends and clients on a regular basis!
    Date published: 2015-02-04
    Rated 3 out of 5 by from terrible smell, but ingredients are top notch I wanted to try this product because the ingredients are fantastic. Everything and more that one would want in a joint supplement. Only one of my horses ate it in his pellets and the other one would eat it only if mixed with O&M. I used it for about 2 mos. so I can't say whether or not I saw an improvement. I wish the one one would've eaten it b because then I could see whether or not this would help.
    Date published: 2014-12-21
    Rated 5 out of 5 by from So far, so good! So, I'm an equine masseuse, very much into prevention vs. cure, and treating the whole horse to obtain better health. My 12 yo OTTB had been on oral joint supplements before with no real difference. For a while, he was on Adequan injectable only. Usually, about 2-3 weeks after his Adequan injection, he starts to feel stiff again. I only massage him about once a month right now, and his massage was four weeks ago today. I had been noticing that even with massage and Adequan, he still wasn't as free in his motion as he had become famous for (he is *extremely* comfortable). The source of his stiffness was primarily in his right stifle and hock. Cold laser helps immensely, but I can't cold laser every joint, every day, so I wanted to try daily support again. He has arthritic changes in literally every joint in his legs, previously bowed tendons (trained but never raced--bowed almost immediately in training), and wind puffs behind. For the price, I was willing to give it a try, and might even have been relieved if it didn't seem to help as it is a bit pricey. But if it does help, it's worth it to me. He's only 12, so prevention of any further joint deterioration, as well as any possible reversal of existing changes is my focus right now. I liked the fact that this supplement offers quantifiable improvements in joint health as well as anti-oxidants for overall health. Maybe it's too soon to say, but he felt FANTASTIC this weekend with no massage, laser or Adequan for the past four weeks. He also tends to get big-giant-leg cellulitis with every leg cut, and his most recent big-leg was back to normal in two days. I'm wondering if perhaps the extra anti-oxidants were responsible. Long story short, I might be stuck with the price, because it might be giving me my sweet ride back.
    Date published: 2014-12-02
    Rated 4 out of 5 by from So far, so good. I just switched to this in place of SmartFlex and SmartTendon Pellets. My horse gobbles them up and it's less expensive and less plastic waste.
    Date published: 2014-11-21
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