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Choose AutoShip to become eligible to apply for the FREE Colicare Program after checkout.

ColiCare is a FREE veterinarian-directed wellness program that provides enrolled horses with up to $7,500 of colic surgery reimbursement.

How Does it Work?

  1. Order any ColiCare Eligible Product in SmartPaks
  2. Fill out the quick application online- no paperwork required!
  3. Complete the Annual Wellness Requirements every year:
  • Physical exam performed by your vet
  • Dental exam performed by your vet
  • Vaccinations administered by your vet
  • Deworming program developed with your vet that includes at least one fecal test and two deworming administrations per year

Provided you meet the requirements above, if your horse undergoes any type of colic surgery, you'll be eligible for up to $7,500 of reimbursement.

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  • This horse already has an existing AutoShip SmartPak. Please select the "AutoShip" checkbox or enter a different horse name.
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Please call 1-800-461-8898 to order this product.
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  • This horse already has an existing AutoShip SmartPak. Please select the "AutoShip" checkbox or enter a different horse name.
  • SmartPak Pouches are currently only available for horses receiving one daily dose supplement, but the horse you've selected is already receiving other daily dose supplements. Please select "SmartPak Strips" to add this supplement to your horse's current order or enter a different horse name.
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Feeding Chart

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.
( Cups / Meal)
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Maintenance dose

You're eligible to apply for our FREE ColiCare Program after checkout.

ColiCare is a FREE veterinarian-directed wellness program that provides enrolled horses with up to $7,500 of colic surgery reimbursement.

How Does it Work?

  1. Order any ColiCare Eligible Product in SmartPaks
  2. Fill out the quick application online- no paperwork required!
  3. Complete the Annual Wellness Requirements every year:
  • Physical exam performed by your vet
  • Dental exam performed by your vet
  • Vaccinations administered by your vet
  • Deworming program developed with your vet that includes at least one fecal test and two deworming administrations per year

Provided you meet the requirements above, if your horse undergoes any type of colic surgery, you'll be eligible for up to $7,500 of reimbursement.

Learn More »
  • This horse already has an existing AutoShip SmartPak. Please select the "AutoShip" checkbox or enter a different horse name.
  • SmartPak Pouches are currently only available for horses receiving one daily dose supplement, but the horse you've selected is already receiving other daily dose supplements. Please select "SmartPak Strips" to add this supplement to your horse's current order or enter a different horse name.
Please call 1-800-461-8898 to order this product.
New ship same day!
These are for:
Sign in to choose an existing
  • This horse already has an existing AutoShip SmartPak. Please select the "AutoShip" checkbox or enter a different horse name.
  • SmartPak Pouches are currently only available for horses receiving one daily dose supplement, but the horse you've selected is already receiving other daily dose supplements. Please select "SmartPak Strips" to add this supplement to your horse's current order or enter a different horse name.
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Targeted support for senior joint health

  • 5,000 mg of glucosamine, 500 mg of chondroitin sulfate, 3,000 mg of MSM, & yucca for healthy joints
  • Includes vitamin A & vitamin E for antioxidant support, plus probiotics for healthy digestion
Senior Flex is a unique combination of joint, digestive, and antioxidant support for the senior horse. Provides 5,000 mg of glucosamine, 500 mg of chondroitin sulfate, 3,000 mg of MSM, 5,500 mg of yucca, 1,200 mg of Ester-C, 15,000 IUs of vitamin A, 1,000s IU of vitamin E, and probiotics to aid in weight gain, body condition, and digestive function. Senior Flex is apple-flavored with a rice bran base for added palatability.

Also consider Senior Flex H/A Pellets!

100% Happiness
Guarantee
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At SmartPak, your happiness is at the core of everything we do. We back every order with our 100% Happiness Guarantee so that you can shop with confidence. If you're ever less than thrilled with your purchase, just let us know and we'll refund you right away. No hassles, no hoops, no kidding.

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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.

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.

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Ingredients

(Maintenance Dose = )
Ingredient Per Serving Per Pound
How the Ingredients Work
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Instructions

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Clinical Research

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    Reviews

    Senior Flex is rated 4.6 out of 5 by 137.
    Rated 2 out of 5 by from Senior horse would not eat this product. Senior horse would not eat this product. Smart Pak kindly replaced it with the house brand in pellets.
    Date published: 2017-08-10
    Rated 4 out of 5 by from Loved the taste! I had to separate feed time because my younger horses wanted to eat this all up.
    Date published: 2017-08-01
    Rated 5 out of 5 by from Senior Flex for Maintenance I started Cheyenne on Senior Flex about 6 months ago to help prevent any joint pain or injuries. It seems to be helping my horse who will be 11 years this year. I will continue to use it as long as I am seeing improvement!
    Date published: 2016-12-20
    Rated 5 out of 5 by from Chancy Tru loves senior flex. My 20 year old Mare. Chancy has hip problems and was really stoved up. With Senior flex she feels much better and can actually kick up her heels some..
    Date published: 2016-09-08
    Rated 4 out of 5 by from Has everything she needs! My 24(?) year old mare needed something more than the Butlers pellets she was on to manage her mild arthritis. This supplement has good amounts of everything i was looking for (MSM, glucosamine, etc) with the added bonus of antioxidents for her immune system and probiotics. Don't have to supplement in probiotics for her anymore which is great because she will only eat so much extra "stuff" with her grain. She's picky and eats this well
    Date published: 2016-05-22
    Rated 5 out of 5 by from My horse loves it I am so happy that I bought this it has helped my horse
    Date published: 2015-11-12
    Rated 5 out of 5 by from Supplement fantastic, packaging not so great I've had my horse on Senior Flex for over 10 years. It's the only thing that keeps his 36, almost 37 year old joints happy. However, the recent packaging change isn't the greatest. I saved my last bucket to pour it in, as the people who help care for my horse spilled the bag twice, as it's not nearly as stable as a bucket with lid.
    Date published: 2015-08-27
    Rated 5 out of 5 by from All around good product! I have used this product for many years on several horses. I now have 2 senior horses who both are in remarkable shape for their ages; the oldest is 29 now. I like that it has good, familiar ingredients I feel comfortable giving my horses, and can look at them and see how well it works! Plus, they love it!
    Date published: 2015-08-04
    Rated 5 out of 5 by from Great product Have been using Senior Flex for over a month now and my horse looks and feels great.
    Date published: 2015-02-13
    Rated 5 out of 5 by from Easy to use in smartpaks Giving this to our 28 plus year old appy and he is also a lesson horse and has more spunk than ever. Working great!
    Date published: 2015-02-03
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