Gastro pHix

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Product Overview



GASTRO pHix® is a pelleted supplement recommended to support normal pH of the horse's stomach, plus soothe and support normal health of tissues which line the stomach and small intestine. GASTRO pHix® provides the following unique benefits:

  1. Helps maintain normal stomach pH.
  2. Supports occasional gastric distress.
  3. Supports the protective lining of the foregut.
  4. Supports normal mucous production by the intestinal tract.
  5. Helps maintain healthy intestinal cells.
  6. Helps maintain strong bones.


  • Proprietary Blend of [Sodium Bicarbonate, Deglycyrrhized Licorice, Chromium, Slippery Elm, Fenugreek  Seed, L-Glutamine, Acetyl-L-Carnitine]...40.0 g
  • Lithothamnion (Red algae)...20.0 g
  • Mannanoligosaccharides (MOS)...11.4 g
  • Flax Seed...11.4 g
  • Magnesium Oxide...2.3 g
  • ButiPearl Z EQ® (butyric acid, zinc oxide)...2.3 g


Alfalfa Meal, Anise, Vegetable Oil, Wheat Middlings.

CAUTIONS: If animal’s condition worsens or does not improve, stop product administration and consult your veterinarian. Safe use in pregnant animals or animals intended for breeding has not been proven. An examination from a veterinarian is recommended prior to using this product. Absorption of drugs taken simultaneously may be delayed.

FOR USE IN HORSES ONLY: Recommended to support normal pH of the horse's stomach, and soothe and support normal health of tissues which line the stomach and small intestine.


  • Daily Use: Administer 1 scoop twice daily.
  • Travel & Extreme Conditions: May administer 1 scoop every 3 to 4 hours

(Enclosed 8 fl oz. scoop holds 165 grams)

WARNINGS: Not for human consumption. Keep out of reach of children and animals. In case of accidental overdose, contact a health professional immediately. This product should not be given to animals intended for human consumption.

 Net Contents: 44 lb (20 kg)


(26 reviews) Write a Review

26 Reviews Hide Reviews Show Reviews

  • 5
    It works

    Posted by JS on Mar 1st 2024

    My 8 year old holsteiner had been dealing with ulcers for many years despite appropriate turn out, constant access to hay, limited travel. He had been on outlast with his previous owner, and no success. He underwent one month of omeprazole along with 5-6 months of sucralfate along with twice daily dosing of gastophix, 101 diet balancer, alfalfa pellets and turbo mag. He has been ulcer free since August 2023. He had struggled with being underweight but now he’s too fat! We are having to pull back on his alfalfa pellets and rice bran. His gut seems much more capable of absorbing nutrition. He’s a healthy happy boy.

  • 5
    Gastro Phix

    Posted by Tracy Schmidt on Nov 16th 2023

    A must have for all horses in competition. I've tried many kinds of ulcer remedies for 7 years on this hard to keep them away mare only to start over with succeed to get rid of the ulcers again. This is the first thing that has ever kept them away once I got rid of them. It has truly made a believer in me. Everything in competition in my barn will always be on it.

  • 5

    Posted by Heather Burke on Oct 8th 2023

    I LOVE this product. I recommend it to all of my clients with horses in work or any kind of stress. The best and most effective buffer I have found. A staple in all of my personal horses diets! Also, the folks at Stride are wonderful to work with!

  • 5
    So far so good!

    Posted by Stacia Tuchscherer on Sep 7th 2023

    I recently started all three of my horses on this, all which range in different ages and personalities. I have a 20 year old, 13 year old and a long yearling. My oldest is typically laid back but does have some stress around feeding time, my 13 year old is a very high stress, high anxiety horse and my yearling is good all around but being younger it comes with stressors of learning new things and training. All are more comfortable in their every day routines and my 13 year old now has better forming stools. If you have a horse with anxiety you know more often than not stool is not always ideal. My yearling also went off to training and I feel comfortable knowing that he can comfortably be in a new environment and his gut health is taken care of. He's taking everything in stride!

  • 1

    Posted by Mary dehart on Sep 4th 2023

    My horse colicked on gastrophix and cost me a large vet bill. I called and let your company know and trashed a full bag I will not purchase any products in the future.

  • 5
    Gastro phix

    Posted by Aubrey Ferris on Jul 29th 2023

    After switching from MVP to this product, we have found that not only a cost savings, but my competition horses travel better and have less GI upset.

  • 5
    Honestly the best gut product!!

    Posted by Cassandra Clairmont on Jun 29th 2023

    My Cushing gelding had been having gut problems for over a year. Then a friend of mine found this and said I needed this. She also bought it for her herd too.. Also his mood did a total 360, so happy we found this product!!!

  • 5

    Posted by Brittany Newsham, DVM on Jun 4th 2023

    I have been using this product for over a year at this point on my hot thoroughbred. She has zero issues eating it and her coat, attitude towards work, and comfort has never been better

  • 5
    Gastro pHIX

    Posted by Jane Jimerson on Apr 4th 2023

    I started my 12 yr old gelding on this 1 month ago. He was having a hard time maintaining his weight and nervous. I started seeing results in his attitude within 2 days and his weight is increasing. My boy is so much more relaxed now and his weight is much better. Thank you Blue Bonnet!