Senior Flex

  • Category: Joint Supplements
  • Brand: MVP Med-Vet Pharmaceuticals
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The Original #1 Senior Joint Support! 

Senior Flex is a unique combination of support for the senior horse!  Contains glucosamine, chondroitin Sulfate, MSM, yucca and Ester-C to support healthy joint function.  Direct fed microbials (probioitics) to help support digestive function.


Provides (Per 1 oz serving):  5,000 mg glucosamine; 500 mg chondroitin sulfate; 3,000 mg MSM; 1,200 mg Ester-C; 5,500 mg Yucca; plus direct fed microbials, vitamins A,D and E.


(Excludes Sand-Free)

The map below indicates ground transit time via Fed Ex. All orders placed before 3:00 p.m. CST will be shipped the same day.  ALL orders placed Friday (after 3PM)/Saturday/Sunday will be shipped the following Monday.


Orders placed over the weekend (Friday after 3PM/Saturday/Sunday) will be shipped the following Monday.  All vaccines orders are shipped to be received within the same week (ie. Any order placed Wednesday (after 3 p.m. CST), Thursday or Friday to ship 2 day air, we will hold your order to ship on the following Monday).  No vaccines will be shipped on a Friday.

We strongly recommend ALL vaccine orders be shipped 2nd day or Next day air. Vaccines not shipped in this manner are non-returnable/non-refundable.  All vaccine orders are shipped in a bio-cooler with ice ice packs.  

2-DAY AIR:  $22.00
Next Day Air:  $35.00

NOTE  Express order delivery time:  Example:  2 day air (2 business days) - if your order ships on Monday, you will receive it Wednesday.  Air shipping Flat Rates apply to FedEx service only.  Vaccines are not shipped on Fridays - NO Saturday express deliveries unless requested (additional express charges will apply).

WEATHER DELAYS:  We are not able to reimburse air charges due to inclement weather that is not in our control.



Unless item is designated "FOB", or marked "Freight Charges Apply" shipping by ground service is FREE within the contiguous 48 states (Fed Ex ground or SpeeDee only).

 MVP supplements ship FREE (Exlcuding Sand Free).

If shipping to a commercial address: Your package will be delivered during the work week (Monday through Friday).

WHEN ORDERING REMEMBER $35.00 minimum order necessary for shipment.
$35.00 - $75.00 order add $6.95 handling.
ALL products marked FOB (Freight On Board) OR Freight Charges Apply - will incur a freight charge.







National Animal Supplement Council (NASC), an industry group dedicated to protecting and enhancing the health of companion animals and horses throughout the United States. Founded in 2001, NASC Members are industry participants and other stakeholders of the finest animal supplements who are committed to the highest current standards of quality in the industry today.

The Council's overriding goal is to promote the health and well-being of non-human food chain animals that are given nutritional supplements by their owners, and to protect and enhance the integrity of the animal supplements industry.

The cornerstone of NASC's mission is to work cooperatively with state, federal, and international governmental officials to create a legislative and regulatory environment that provides a framework that is Fair, Reasonable, Responsible and Nationally Consistent.

Such an environment of safety, accuracy and quality serves the interests of NASC's members by ensuring that ethical manufacturing and labeling practices are complied with throughout the industry.

NASC Seal of Quality…

As part of its ongoing effort to improve and standardize the animal supplement industry, NASC initiated its Quality Seal Program. The Seal is a way for consumers to know that when they buy a product, they buy from a reputable manufacturer that has successfully completed a facility audit. Different from the NASC logo, the Seal is a privilege for members to use on their products and signifies that the company has been audited for the implementation of specific standards. Members must agree to adhere to NASC’s quality standards, part of which includes submitting to an independent audit to ensure conformance with quality system requirements.



SKU:  Size FOB Cost/Serving Price Quantity
73160628 5lb (80 servings) Foil Bag Ships FREE $1.04 $83.45
73160632 10lb (160 servings) Foil Bag Ships FREE $1.00 $160.00
73160636 20lb (320 servings) Bucket Ships FREE 95¢ $304.00

Product Ratings and Reviews

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5.0 out of 5.0 stars
  • Deborah
  • Shelbina, MO
  • Monday, December 18, 2017
I have a 27 year old OTTB with a low back. I started giving him SeniorFlex about two years ago and, aside from his back, you would never guess he is as old as he is. He struts around, prances all over the place and appears to have no joint discomfort. I highly recommend this supplement.
  • Jo
  • Howe, TX
  • Friday, March 25, 2016
My 15 year old quarter horse has some serious knee issues and I truly believe that Senior Flex has helped him stay sound and has relieved the pain associated with this knee. Prior to using Senior Flex, I had to give him Bute on a regular basis, but not any more.
  • Lannette
  • Metamora, MI
  • Sunday, March 29, 2015
Great product for older horses. Using it for two 32 year old horse and saw immediate improvement in movement for both of them. Would recommend to anyone.
  • Catherine
  • Merced, CA
  • Sunday, January 26, 2014
Excellent Product...Last year my 23 mare must of taken a real header...Had the chiropractor out, and the adjustment helped, but she was still sore. I put her on Senior Flex and she was back to top performance and being the boss mare with in 2 wks.
  • Pegi
  • Delano, MN
  • Monday, December 17, 2012
I rate this TOP of the line. My 31 year old mare has been on it for many years and is mobile and happy. She leads her herd to this day - with body language only. It all started out with a sore shoulder and I put her on Senior Flex and it resolved and we've never looked back. She has been on it for over ten years. I wouldn't change a thing about the formula. Anything for Miss America!