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SmartFlex® Senior Herb-Free Pellets

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Product Overview

Keeps your senior going strong

SmartFlex Senior Herb-Free Pellets are designed to provide well-rounded joint support for older horses. This herb-free version of SmartFlex Senior is ideal for older horses that compete.

For joint support, SmartFlex Senior Herb-Free Pellets provide 8,000 mg of glucosamine, 700 mg of chondroitin sulfate, 75 mg hyaluronic acid, and 12,000 mg of MSM. This formula also contains 500 mg of the amino acid phenylalanine to help address stiffness and discomfort associated with aging. And because senior horses benefit from extra antioxidants, this supplement also contains vitamin C and super oxide dismutase. Your horse will love these tasty pellets!  For even more comprehensive senior support, consider our multi-purpose formula SmartCombo Senior Ultra Pellets.
  • 8,000 mg of glucosamine, 700 mg of chondroitin, 75 mg hyaluronic acid, and 12,000 mg of MSM
  • Herb-free formula ideal for competitive seniors

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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

Supercharge Your Supplements

  • Choose Your Flex: SmartFlex® Senior
    Not sure which SmartFlex® formula is the best one for you? Watch this video & see if SmartFlex Senior Herb-Free is right for you and your horse
  • Simplify with SmartPaks | Consistent, Custom, Convenient
    Simplify your life with SmartPaks: custom-made, pre-measured daily doses of your horse's supplements.


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.

SmartFlex® Senior Herb-Free Pellets is rated 4.7 out of 5 by 369.
Rated 5 out of 5 by from Best support! I purchased the SmartFlex® Senior Herb-Free Pellets for my new Thoroughbred that retired from the track with some arthritis in his knee. I knew he would benefit from a joint supplement to help maintain his joint health. Even though he is young, his joints have already experienced quite a bit of wear and tear so I chose this 'senior' formula. The SmartFlex® Senior Herb-Free Pellets contain high levels of glucosamine, chondroitin sulfate, and hyaluronic acid which are all utilized to support and maintain different aspects of joints. It also contains 12,000 mg of MSM per serving which is great for supporting a normal response to inflammation. I also appreciate this herb-free formula since my horse is actively competing!
Date published: 2023-09-19
Rated 5 out of 5 by from Picky eater! My horse is a picky eater so when she liked this I was excited. I really think it is helping her to have this supplement. I would recommend it!
Date published: 2022-10-24
Rated 5 out of 5 by from Amazing stuff! I have had my 16 year thoroughbred mare on this for about six weeks. My vet had given me medicine for her stiffness. After about a month I noticed her movement was so much more fluid. I have not had to use what the vet gave me. I’m impressed!
Date published: 2021-11-15
Rated 5 out of 5 by from Easy feed I have noticed a little more energy from my senior.
Date published: 2021-07-15
Rated 5 out of 5 by from Great products Customer service is great and my order is always on time.
Date published: 2021-01-25
Rated 5 out of 5 by from Easy to feed I bought this for my Clyde cross mare when she was diagnosed with a stifle issue. It not only works , but overall her disposition is calmer and less stressed when in her stall due to bad weather . It took about two full months of building up into her system however, it was worth the wait . Due to her being 1,500 pounds , she is on a custom dose of three wells . I say give this product a try but do give it some time . My horse is more comfy and I am happy she no longer needs injections or a harsh prescription to keep her at a comfortable level of health .
Date published: 2020-09-15
Rated 4 out of 5 by from Great features I am so glad I switched to the herb free. My mare seems to do better on this one.
Date published: 2020-08-15
Rated 5 out of 5 by from Best Senior Supplement! I have been using this for a while now and I have tried all the senior supplements and my poor pony never changed, until I tried this one! He no longer limps from his arthritis and has more energy!
Date published: 2020-07-28
Rated 5 out of 5 by from Really needs the full dose I have an 11yo TB mare that I wanted on pretty comprehensive joint support as she's been jumping her whole life. I had her on this, then to save a couple bucks I dropped her down to a custom dose of only half the recommended dose. That was a mistake! Within 2 weeks I noticed she was cracking and popping when she got up from laying down. I'm adding this back to her regular SmartPaks as I never noticed this while she was on the full dose. My mare gobbles it up without an issue.
Date published: 2020-06-07
Rated 5 out of 5 by from It must be Delicious! my senior horse takes an oral med for arthritis. He hates it. I tried hiding it in his food. I tried hiding it in his food with syrup. I tried giving it with a peppermint. I tried giving it inbetween two peppermints glued together with syrup. I tried shoving it in an apple. Finally resorted to shoving it way back in his mouth with my hand, but he was really good at working it back out and spitting on the ground in front of me. One day I got smart and hid it in a few grains of the SmartFlex Senior Herb-Free supplement and he gobbled it up!!! No more problems, he takes it like a champ.
Date published: 2020-06-03
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