Mega-Flx +HA

Item #0040482



Mega-Flx +HA

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Mega-Flx +HA contains a balanced ration of selenium, vitamin E, MSM, keratin, key amino acids and HA. Builds joint resilience, protects joints, improves mobility, & reduces inflammation in horses in as little as 7 days. Read More

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Joint Supplement Ingredients Explained

Trying to find a joint supplement can be a daunting task if you don't already know what you want. (Sometimes even if you do.) Here are some of the more common ingredients used in joint supplements and how they are supposed to help... 


Mega-Flx +HA

Free 32 oz Mega-Flx+HA
With the purchase of a gallon of Mega-Flx+HA.
No limit. While supplies last. Ends 1-10-2022.

Contains a balanced ration of selenium, vitamin E, MSM, keratin, key amino acids and HA for muscle soreness and joint health.

Mega-Flx +HA Key Points:

  • builds joint resilience
  • protects the joints
  • improves mobility
  • helps reduce inflammation
  • contains no animal or marine by-products
  • palatable liquid formulated for excellent absorption
  • used by veterinarians and trainers
  • reduces muscle soreness
  • improves joint condition

Results can be seen in as little as 7 days.

See a video here for more information

Functions associated with the key nutrients in the product.

Joint Repair Keratin, Proline, Glycine
Joint Health Keratin, MSM, Proline, Glycine, Glutamine, Manganese, Copper, Hyaluronic Acid
Joint Lubrication Hyaluronic Acid
Muscle Repair Selenium, Vitamin E
Muscle Tone Selenium, Vitamin E, Glutamine
Antioxidant Keratin, Selenium, Vitamin E, Vitamin C, Copper, Manganese
Connective Tissue Production Vitamin C, Copper, Proline
Healthy Coat & Hoof Keratin, Selenium, Vitamin E, MSM, Vitamin C
Improved Mobility Keratin, Selenium, MSM, Hyaluronic Acid
View manufacturer and/or label information


  • Brand: Spectra
  • Form: Liquid
  • Ingredients: Selenium,Vitamin E,MSM,Keratin,Key Amino Acids,Hyaluronic Acid
  • Size: 32 oz,1 Gallon
  • Day Supply: Up to 64 Day Supply,Up to 256 Day Supply

Reviews (8)

Write A Review

  1. 5.0 out of 5 stars


    Have seen positive results within 2 weeks of starting to use.

  2. 2.0 out of 5 stars

    "Too bad about... "

    The label shown on this website must be old, does not show that this has Red Dye 4O in it. That's really too bad. Not sure why they have to take a good product and add something like that just to make it look red ? I am a Veterinarian and I really like the formula but that's not something I will feed my horse every day for any length of time. Too bad : ( Sent it back.

  3. 5.0 out of 5 stars

    "Good for senior horses"

    Been using this 2 years now and seems to help with flexibility.

  4. 5.0 out of 5 stars

    "Great Product"

    I tried this on a whim because of a sale add I received by email and after using several other, more expensive, joint supplements. I love it, my horse loves it, and so does my bank account. He is 18 years old, but don't tell him! This product has helped him tremendously.

  5. 5.0 out of 5 stars

    "Mega flex"

    Great product!

  6. 5.0 out of 5 stars

    "Great supplement!"

    I have a 5 year old mare that was having severe back soreness. After having my saddle checked by my vet and chiropractor, feeding magnesium supplement, testing neg for hypp and pssm I finally tried this product along with a back on track pad and kept on the magnesium supplement. FINALLY my mare is sound and feeling like her same old self. It has been 12 long months since she has felt this good and is now working amazing on the barrel pattern! Thank you Spectra Supplements!!

  7. 5.0 out of 5 stars

    "It worked in more ways then one"

    I have a 10 year old Quarter mare that has been having breathing issues when riding or longing. We had tried a round of anti-biotics, Antihist and was starting to think she might be a roarer but it did seem to come and go so it coulnd't be. A friend came over one day and I longed her to show her the way she was moving, almost pacing instead of loping. Now mind you this a very SHORT STOCKY rough moving mare. She said she looked sore in her stifles and recommended mega flex. She made a comment have you ever got hurt and it took your breath away? Of course I have, Somewhat understanding, but not convinced I figured it doesn't hurt to try. So I ordered and by the way Jeffers is the only place I found it. I did the load dose for a week and half before I rode her. So far I have ridden her about four- five times and no breathing issues. She is even playing in the pasture again.

  8. 5.0 out of 5 stars

    "Best Supplement Ever"

    I have been very skeptical about many joint supplements for my horse because I havent found one that works. I have a 12yr old gelding that was used heavily for barrel racing before I bought him and I use him for another running sport and had issues with his joints in his hocks. He popped nearly everytime he walked and one could tell he was in pain. This stuff took effect in five days and the popping has all but stopped and he is doing well enough I may not even have to have his hocks injected again. Great Product!

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