Superior Horse Supplements for Superior Performance!

Mega Grand Flex


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Equine Joint Supplements Formulated for:

  • Aging
  • Intense Training
  • High Level Competition
  • Can be Combined with Grand H.A. to Maximize Results.
  • Aggressive Joint Support
  • Helps to Maintain Joint, Tendon and Ligament Health
  • Helps reduce Inflammation, Stiffness and Discomfort Associated with Normal Exercise
  • Provides Support for Joint Concerns
  • Extremely High Levels of Glucosamine
  • Fights Free Radicals

MEGA Grand Flex™ is an ideal equine joint supplement for senior horses, competition horses, and horses in various disciplines. We recommend using MEGA Grand Flex when a more aggressive approach is needed. MEGA Grand Flex contains all the important co-factors contained in original Grand Flex, plus 12,500 mg of Glucosamine and 10,000 mg of MSM per measure to promote healthy joint function. For a more powerful approach, Grand H.A. can be added, or you can switch to Grand H.A. Synergy. When results have been achieved, it may not be necessary to use MEGA Grand Flex on a long-term basis; we recommend following with our original Grand Flex, Grand Complete, or Grand H.A. for long-term maintenance and joint support.


Product Facts • Per 1oz. (28.5 g) unit

Glucosamine HCL
12,500 mg
10,000 mg
Vitamin C
1,000 mg
250 mg
200 mg
200 mg
Vitamin B-3
150 mg
100 mg
80 mg
50 mg

Weight 3.75 lbs

3.75 lb., 10 lb., 20 lb.


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Grand Meadows Price Increase3rd Quarter 2021

Thank you for being a Grand Meadows customer and we hope our products are working well for you and your horse(s).

At Grand Meadows, we have always been very reluctant to raise prices as one of our core principles is to make our products affordable. However, over the last year, we have had a series of significant cost increases across multiple areas from raw materials, packaging supplies and transportation costs, which we have had to absorb. The cumulative effect of these increases has forced us to increase the prices of all Grand Meadows products.

The price increase will be effective as of September 1, 2021.

We look forward to our continued, long-term partnership.  Thank you for trusting us with the health of your horse.

Best Wishes,

Nick Hartog