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SmartFlex® Senior Pellets

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Daily Serving

Dog Weight - lbs Inactive Dog Active Dog Working Dog
Inactive Dog - Less than 30 minutes of vigorous exercise daily
Active Dog - At least 30 minutes of vigorous exercise daily
Working Dog - More than two hours of vigorous exercise daily
This is only a guide. Please consult your veterinarian to determine the perfect feeding amount for your dog.
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Product Overview

Which horses benefit from senior joint support?

Normal aging and years of work can really take a toll on joints, causing stiffness and discomfort that can make a senior horse’s life more difficult. By providing your old friend with joint support designed to help keep him comfortable, you’re showing him how much you love him and appreciate the years you’ve shared. 

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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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    Not sure which SmartFlex® formula is the best one for you? Watch this short video & see if SmartFlex Senior is right for you and your horse.
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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.

SmartFlex® Senior Pellets is rated 4.7 out of 5 by 1586.
Rated 5 out of 5 by from Wonderful for my old man! SmartFlex Senior Pellets have renewed my old man! I love that this supplement includes high amounts of glucosamine, chondroitin sulfate, and HA to support healthy joints. However, what I love most about this supplement is the devil's claw and boswellia. These herbs help tremendously with the stiffness and soreness my horse sometimes experiences!
Date published: 2022-05-17
Rated 5 out of 5 by from See the results with this product! My 24 year old OTTB had been slowing down, he was on MSM since that is what I had in the barn, and you could tell he still wasn't feeling great between his arthritis and the bone spur on the back of his knee. Cantering wasn't happening at all and trotting was only happening in short bursts. After being on SmartFlex Senior for 2 1/2 months, he is feeling 100Xs better! I rode him for the first time since starting SmartFlex Senior (bad weather here has prevented it before now). He trotted as long as I wanted and cantered on his own multiple times for longer stretches than I ever expected - even breaking into the canter when my daughter popped on for a quick ride after she rode her pony. To say I'm pleased is an understatement - I'm tickled to death to have my old guy feeling so good again!
Date published: 2022-04-05
Rated 5 out of 5 by from
Date published: 2022-03-28
Rated 5 out of 5 by from Really works! I have my 27 year old retired gelding on this and I started my 9 year old barrel mare on this a month ago and wow at the difference in a short amount of time! The length of her stride and her movement improved dramatically. I’m very happy with this for both horses. Highly recommend!
Date published: 2022-03-28
Rated 5 out of 5 by from These saved my gelding I began feeding these to my old gelding (he’s about 28) about a year and a half ago. They have completely changed his life. We were talking about retiring him and needing take him out of the field because he was struggling so much to walk but after about 3 weeks of these I began to see major improvement. He has arthritis in his front legs and the swelling has decreased in both of them. He went from barely being able to walk to rearing up and kicking down stall doors when he’s mad. I cannot recommend these enough. After seeing the great results my horse has, three other horses at my barn are trying these. I cannot say enough good things about these supplements.
Date published: 2022-02-15
Rated 5 out of 5 by from Horses love it My horses are picky and when I introduced this to them they ate it with no fuss!
Date published: 2022-02-11
Rated 5 out of 5 by from Great product! I put my 23 year old mare on this and she is showing much more energy and overall wellness, and seems to not be as stiff in her movements. That is very promising as she has been showing her age previously. She has only been on this product for a little over a month and am already seeing promising results.
Date published: 2022-01-26
Rated 5 out of 5 by from Great supplement, I noticed a big change My 13yo OTTB gelding has been on this for about a month. He's arthritic (average what you'd expect for a teenage OTTB in full work), and he has mild KS. I had read elsewhere that devil's claw was a good ingredient for mild pain associated with KS, plus I liked that this has all of the standard joint supplement ingredients. It's affordable and palatable. My horse is a semi picky eater, he's funny about strong smells or a large amount of powder. This is pelleted and doesn't have a strong smell at all. He didn't even notice it in his grain. I noticed a difference within a week or so. My horse tends to get tense, anxious, and hollow in cold weather due to discomfort, and he became a lot more relaxed, soft, and elastic after being on this. I am combining this with a separate dose of pure MSM for the winter months, which has helped him even more. The only downside of this supplement is that it's not USEF legal. If you're not showing, it's definitely worth trying! That is the only reason I switched to something else.
Date published: 2022-01-04
Rated 5 out of 5 by from Great product for maintenance of senior horses I use this supplement for all of my senior horses as a part of their regular support care. I do find that it seems to make them more comfortable. My pony is a bit of a picky eater and he happily scarfs this down.
Date published: 2021-12-27
Rated 5 out of 5 by from Improved Comfort!!!! I have been using this product for over a year now for 2 of my horses. My 24yr old morgan has always had a gimp at a trot in his later years, but last year it was noticeable while riding so I started him on it and it improved so much. This summer I upped his dosage, because why not and my family noticed he does NOT limp anymore even while riding. My 20yr old QH has had leg problems due to confirmation problems since he was young, but was never lame. We noticed a change a year and a half ago that his weird stance started to become more normal. Last year his hind legs when weight was placed on them they would pop (to go into the normal weight-bearing position) and even I could feel it while riding him. I placed him on these supplements and in the span of a week he was my normal riding, jerk of a horse. Even this year he felt great during the summer and it made me so happy. This product is a lifesaver.
Date published: 2021-12-15
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