Order within and have it by * in (edit)
Ship speed applies to in stock items, pending location. Does not include personalized items like engraving, embroidery, SmartPaks, or PortionPaks. Complete details on our Shipping Policies page.
Contact our experts 24/7: Call 800-461-8898

The SmartPak Experts are now SmartPak TEXTperts!

All of our supplement and product expertise is just a text away! Ask questions, manage your account, and place orders by texting 26756 from your mobile phone. Have a great ride!

Text us at 26756

Available Monday - Friday
7:00am - 10:00pm EST

By texting 26756, you're giving SmartPak your consent to text you to help resolve your issue, including automated replies, at the number you provided. To opt out, text STOP to 26756. Text HELP to 26756 for info. Msg&data rates may apply. Consent to receive texts not required to buy products. Terms & conditions and the full Text Message Privacy Policy can be found at https://www.smartpakequine.com/content/2waytextTC in case you're interested.
SmartPaks help you take great care of your horse, so we take great care of you with SmartPerks! When you order your horse's supplements in SmartPaks, you're automatically* eligible for our FREE SmartPerks benefits, including:
  • Free ground shipping on what you want, when you want it
  • 10% off all SmartPak brand tack, apparel, and gear
  • A free Team SmartPak calendar, exclusive email offers and discounts, and more!
Learn more about SmartPerks
*At least one horse's individual SmartPaks must be over $40. Some exclusions apply.
Visit SmartPak.com/SmartPerks or call 1-800-461-8898 for details.
As a SmartPaks Subscriber, you can get free ground shipping all day, every day on just about everything we sell at SmartPak, thanks to your SmartPerks. The few add-on items we have can be shipped free by synching them with your horse's SmartPaks, shipping on a Barn Saver Shipping day, or by having a group of add-on items that total over $75.

Have a question?
Call 1-800-461-8898 or email CustomerCare@SmartPak.com anytime!
SmartFlex® I Maintenance Pellets
SmartSupplements by SmartPak — Item #17183
  SmartPaks Over $40 Ship Free!
Free Shipping Thanks To
This item may be eligible for

Oops! Looks like you've already added this item to your order.

Please select a different recipient name if you'd like to create a new order, or give us a call - we're happy to help!

Maintains healthy joints

  • 4,000 mg of glucosamine, 5,000 mg of MSM & 1,250 mg of vitamin C support joint health
New & improved taste horses love! SmartFlex I Maintenance Pellets provide cost-effective joint maintenance for all horses in light work. This formula contains 4,000 mg of glucosamine, 5,000 mg of MSM, and 1,250 mg of vitamin C. SmartFlex I Maintenance Pellets provide the fundamentals of joint health for horses in light work, with a taste even picky horses can't resist.

SmartFlex I Maintenance Powder

View our Joint Supplement Comparison Chart

Find your horse's SmartFlex


Active Ingredients per 22 g:
(Maintenance Dose = 1 scoop (22g) daily)
  • Methylsulfonylmethane (MSM)
    5,000 mg
  • Glucosamine HCl (shellfish)
    4,000 mg
  • Ascorbic Acid (Vitamin C)
    1,250 mg
Inactive Ingredients: : Alfalfa Meal, Corn Distillers Dried Grains with Solubles, Lignin Sulfonate, Sodium Propionate, Vegetable Oil (cold pressed).


Instructions for Use:
Horse Weight Recommended Amount
Under 500 lbs. 0.5 scoops
500 – 1000 lbs. 1 scoop
1000 – 1500 lbs. 1 scoop
Over 1500 lbs. 1.5 scoops
Directions for Use: Administer 22 g daily, 1 scoop = 22 g


SmartFlex I Maintenance Pellets

Clinical Research

You Might Like
    Customers Also Shopped For
    "SmartBreathe Pellets provide 5,000 mg of MSM plus ...
    "SmartBreathe Pellets provide 5,000 mg of MSM plus bromelain and quercetin, two herbs that help support a normal inflammatory response. This customer favorite includes the antioxidants grape seed extract, super oxide dismutase, vitamin C, and bioflavonoids to support respiratory cell ...
    "Hyaluronex® is a highly concentrated liquid equine joint ...
    "Hyaluronex® is a highly concentrated liquid equine joint supplement that delivers bioactive hyaluronan. More important to professional equine enthusiasts, Hyaluronex provides the premium ingredient MHB3 Hyaluronan, now covered by six United States Patents. The unique formulation for Hyaluronex is tailored ...
    "Soothe and support your horse’s airways with SmartBreathe ...
    "Soothe and support your horse’s airways with SmartBreathe Paste. This comprehensive formula provides 5,000 mg of MSM plus the herb quercetin to help support a normal inflammatory response. N-acetyl cysteine is included for its ability to help protect respiratory tissues ...
    "SmartMetabo-Lean Pellets are designed to help manage insulin ...
    "SmartMetabo-Lean Pellets are designed to help manage insulin resistance, a condition that is part of Equine Metabolic Syndrome, and frequently associated with obesity. This comprehensive formula supports healthy metabolic function by providing ingredients such as chromium and magnesium to support ...
    "If you’re struggling with an irritable, cranky mare, ...
    "If you’re struggling with an irritable, cranky mare, SmartMare Harmony is the ideal formula to help take her from moody to mellow! These tasty pellets provide carefully selected herbs including chamomile and passion flower to help maintain a calm disposition, ...
    "Vitamin E and Selenium are important antioxidants that ...
    "Vitamin E and Selenium are important antioxidants that work together to support a healthy immune system and help neutralize free radicals, the damaging by-products of normal cellular activity. While vitamin E is found naturally in fresh grass, levels begin to ...
    "SmartGain is the weight gain solution you have ...
    "SmartGain is the weight gain solution you have been looking for, with four complementary methods of support! This comprehensive formula provides amino acids to support lean muscle development, extra calories from healthy fats, prebiotics, probiotics, and enzymes for digestive health, ...


    out of 5
    96% of customers would recommend this product to a friend!
    Tell us what you think!

    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.

    • Review 0
    • Votes 0
    • Discipline:
    • Expertise:
    • Product
    • Competitor:


    SmartFlex® I Maintenance Pellets is rated 4.7 out of 5 by 241.
    Rated 5 out of 5 by from
    Date published: 2017-03-07
    Rated 4 out of 5 by from Works great Give this to my 24 year old gelding who was A little still warming up. Now he is doing great & acts like a 6 year old
    Date published: 2017-03-07
    Rated 4 out of 5 by from trying to get some joint support into my horse I am boarding three horses at two different stables. I visit one stable daily and the other once or twice a week. I need to give the horse I don't see as often a joint supplement because he is recovering from an injury. Smart Paks was a good way for me to go because it's easier for the barn manager and the price was competitive.
    Date published: 2017-02-16
    Rated 5 out of 5 by from Excellent product! My horse has been on SmartFlex Maintanvw for a little over a month now. I started her on this due to an old injury and it making her stride just a little off in the back end. Since starting this supplement she is back to full form! Back to her natural, high action stride that I and everyone who meets her loves so much about her! I couldn't be more happy with the product!
    Date published: 2017-01-31
    Rated 5 out of 5 by from Awesome product! Started Koda on smart flex pellets in November! He has never moved so well!
    Date published: 2017-01-28
    Rated 5 out of 5 by from You make her feel so young! This product is wonderful and my senior mare feels and acts so much younger since she has been taking SmartFlex Maintenance 1. She has more spring in her step and has been wanting to jump crossrails. She has always enjoyed trails but now she acts even happier and finds her gaits and speeds up with pleasure. This supplement has made my gaited girl feel so much better and I feel better knowing she isn't moving stiffly now. She is a picky eater but has no issues eating the pellets.
    Date published: 2017-01-25
    Rated 5 out of 5 by from Less Stiffness Horse was having stiffness and occasional swelling. She's 13 so I wanted to get ahead of this before it gets worse. Mare has had no swelling and warms up much quicker since using this product.
    Date published: 2017-01-02
    Rated 4 out of 5 by from Smart flex maintenance love this product! My horse does well on it and is a great value
    Date published: 2016-12-07
    Rated 4 out of 5 by from Good for horses in light work Great product, best suited for horses doing light work. Anything jumping should be on something stronger
    Date published: 2016-11-30
    Rated 5 out of 5 by from So easy We have a young horse in training and wanted to give her every opportunity to realize her full potential. And with the extra stress of training, we decided not to leave nutrition to chance, so we put her on the SmartFlex Pellets. She's doing great. Beautiful muscle tone, coat, mane and tail. And the smartpaks are just so easy for anyone to use that we don't have to worry about who is feeding. She will always get the right dose.
    Date published: 2016-11-15
    Rated 5 out of 5 by from
    Date published: 2016-11-02
    Rated 5 out of 5 by from This is the start of the third month for my rescue Thoroughbred mare taking Smartflex-rehab-pellets Maintenance. She is 14 and would come out of her stall stiff. She no longer starts off stiff and her movement throughout riding is much more fluid.
    Date published: 2016-10-03
    Rated 4 out of 5 by from Hope loves the taste. I have just started using this product and I believe I see some results. For sure I will give this a full 3 months trial. Hoping for more results. By the way this is a Miniature Horse mare that I am using this on.
    Date published: 2016-09-14
    Rated 5 out of 5 by from Seems to be working I have two of my older boys on this (14 and 16) and they seem to be a bit springier in their step! Hoping the benefits continue.
    Date published: 2016-09-12
    Rated 4 out of 5 by from
    Date published: 2016-08-29
    Rated 5 out of 5 by from great product for the price I am very happy with this product. My QH is starting to age and I am trying to keep him as happy and sound as possible. I wanted a comprehensive, but cheap supplement to help with joints and I think that this is the one. I have made many small changes lately so I can't pinpoint what has helped the most but so far, I am very happy with my results. Doc enjoys these pellets as well.
    Date published: 2016-06-28
    Rated 5 out of 5 by from So Far So Good My horse has been on this supplement for 2 months now and I am not sure what I am suppose to see but he never comes out of his field stiff and he is full of energy.
    Date published: 2016-06-22
    Rated 5 out of 5 by from Maintenance Pellets I have add this to my horses daily grain. My gelding always seemed to showing joint soreness and stiffness. I would and still will always stretch him before riding but since I have given this to his daily routine he seems happier and moves more freely. He actually runs more on his own in pasture and to show his happiest by rearing up(which he never did before) and flickers
    Date published: 2016-06-15
    Rated 5 out of 5 by from I bought this product a little over a month ago, and I've already noticed a difference in the movement of my horse. The smartpak packaging and dosing makes it an easy addition to our feeding regimen.
    Date published: 2016-06-13
    Rated 5 out of 5 by from Great product. Very effective. My 20 year old mare has been on this smartpak for a little over a year. It works wonders for her. I started her on it just to prevent stiffness in her aging joints. And now, she acts like a 5 year old when I ride her instead of a 20 year old.
    Date published: 2016-06-07
    Rated 5 out of 5 by from Helped my gelding I have been using the smart flex maitenance for four months and I have noticed a drastic change in my geldings flexibility. I would recommend this to anyone I know that is looking to add a join supplement to their daily routine!
    Date published: 2016-06-02
    Rated 5 out of 5 by from Effective The product is giving my horse the extra nutrients she needs to stay sound.
    Date published: 2016-05-10
    Rated 5 out of 5 by from Not sure yet... Purchased for a teenage horse with lots of crackling joints. I think after 30 days it has improved a bit, but hard to tell so soon after starting it. No problem getting him to eat it.
    Date published: 2016-05-03
    Rated 5 out of 5 by from Fast working !!! I bought this bc my horse was starting jumping and started to pop and crack and he's only 12 so I bought this supplement and he's not popping and he's jumping with ease! Now that his jumping had moved up, I'm moving him to the smartflex II which I'm excited !
    Date published: 2016-04-26
    Rated 5 out of 5 by from See improvements in just a month I bought this for my AQHA gelding who is going to be 13 in May to give him some extra help as he is reaching the senior years. I can see he has improved when he first starts moving I am excited to see what this product does in another few months
    Date published: 2016-04-16
    Rated 5 out of 5 by from Great Feature! I started Ginger on this supplement over the winter months to help prepare her for CDE work ahead.
    Date published: 2016-04-06
    Rated 5 out of 5 by from Great Features! I started Ginger on this supplement over the winter to help prepare her for the CDE's ahead!
    Date published: 2016-04-06
    Rated 5 out of 5 by from Great product at a great price! My horse has been on SmartFlex 1 for nearly 6 months now, and I love it! He is only 6, but is off the track, so very prone to injuries or issues with his legs. On this product it just helps to give me some peace of mind that it keeps his joints feeling loose and supple and good. He has had a past injury on his legs, so I'm very careful to keep him from getting any more injuries or have that injury act up (especially since it is a sesamoid injury), but this gives him just enough so that he never comes out stiff or sore and his past injury never bothers him (almost like it never even happened).
    Date published: 2016-03-31
    Rated 5 out of 5 by from Impressed I bought this for my 12 year old gelding when I got him a year ago. He was very out of shape and cracked every time he walked. Riding wise he was very stiff and just wouldn't move out like he should. He's been on this for about a year and you would never guess his age or that it was the same horse. Very impressed with the outcome. No more swelling in knees and cracking when he walks.
    Date published: 2016-03-23
    Rated 5 out of 5 by from Flash Can Buck Our quarter horse paint was injured in the rodeo and was extremely tight. We have been giving him SmartFlex for two months now and he is able to run, buck and kick with the rest of the herd in this cold weather. He seems quite loose and comfortable.
    Date published: 2016-02-04
    • y_2017, m_4, d_22, h_8
    • bvseo_bulk, prod_bvrr, vn_bulk_1.0.0-hotfix-1
    • cp_2, bvpage2n
    • co_hasreviews, tv_47, tr_194
    • loc_en_US, sid_7183, prod, sort_[SortEntry(order=SUBMISSION_TIME, direction=DESCENDING)]
    • clientName_smartpak

    Q & A

    Healthy Horses  ❤  Happy Riders