• Antioxidants
  • Amino Acids
  • Gelatin/Licorice
  • Prebiotics
  • Probiotics
  • Levucell


    SC Active Yeast
  • Herbals: Slippery Elm, Aloe Vera, Marshmallow Root Powder & Fenugreek Seed Powder to help soothe and support soft tissue function.

  • Brand: MVP Med-Vet Pharmaceuticals
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GASTRO-PLEX™ is recommended to help support healthy digestive function. Key ingredients (antioxidants, probiotics and herbals), help support healthy stomach tissue lining plus Levucell® SC, a powerful yeast that reduces the risk of colic/digestive disorders by supporting the hindgut:    

  • Offsets negative impact of high starch diets
  • Improves fiber digestion in the hind gut
  • Provides direct source of nutrients to nourish good bacteria
  • Stabilizes digestive flora during periods of stress for overall health and performance

*Levucell® SC is clinically researched and a registered trademark of Lallemand Specialties, Inc. (France)


Basic management to prevent G.I. discomfort: 
  •    Free choice hay 24/7
  •    Plenty of water
  •    Feeding 1 oz of salt twice daily
  •    Avoid high intake of starchy concentrated grains,
  •    Restore microbial balance with a quality probiotic/prebiotic 



(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.





 Product Reviews/Testimonials

These testimonials are presented for informational purposes. The information is not intended to be a substitute for visits to your local veterinarian.  Rather, the testimonials offer the reader information written by horse owners and/or veterinarians concerning animal health and products that have shown results.

Click here to read reviews/testimonials



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
73164340 3lb (32 servings) *Foil Bag Ships FREE $1.90 $60.75
73164344 6lb (64 servings) *Foil Bag Ships FREE $1.79 $114.75
73164348 12lb (128 servings) *Foil Bag Ships FREE $1.67 $214.00
73164352 24lb (256 servings) Ships FREE $1.62 $415.65
73164356 50lb (533 servings) *Bag Ships FREE $1.55 $825.00

Product Ratings and Reviews

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4.9 out of 4.9 stars
  • Maddy
  • Minneapolis, MN
  • Monday, October 15, 2018
I received a two month supply from a friend as a gift, so I was initially skeptical. Within about 3 weeks of using it, my horse was less spooky and tense. She ate it mixed in with her regular food no problem! I eventually ran out, and she became spooky and tense within weeks of not having it so I had to buy more! She's back to her old, happy, self.
  • Sophie
  • ,
  • Tuesday, August 21, 2018
Love love love Gastroplex! This supplement has helped my horses so much. They eat and drink better while on the road are not as nervous as they were before. I saw results in the first week! No more ulcers and no more worries!
  • Julie
  • Helix, OR
  • Wednesday, June 13, 2018
Noticed a difference within 30 days of using this product. It helped improve digestive issues with my horses. My mare no longer has a nervous stomach.
  • Wendy
  • Larrabee, IA
  • Monday, March 19, 2018
I've seen huge improvements in my mare. No longer cinchy, a lot happier! And she loves this supplement, normally she picks threw her grain. Would recommend to anyone. And we will not be going without, EVER!
  • Bailee
  • Loring, MT
  • Monday, February 26, 2018
I have had to treat (Omeprazole) two of my performance horses for ulcers in the past. Since using Gastro-Plex I have not suspected them of any gastric issues. They are eating well and maintaining their weight wonderfully on the road. I highly recommend this product.