• Antioxidants
  • Amino Acids
  • Gelatin/Licorice
  • Prebiotics
  • Probiotics
  • Yeast Cuture
  • 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 and may help ease occasional discomfort.                                       

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 $1.80 $58.35
73164344 6lb (64 servings) *Foil Bag Ships FREE $1.70 $110.40
73164348 12lb (128 servings) *Foil Bag Ships FREE $1.59 $205.95
73164352 24lb (256 servings) Ships FREE $1.54 $399.95
73164356 50lb (533 servings) *Bag Ships FREE $1.50 $799.00

Product Ratings and Reviews

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4.9 out of 4.9 stars
  • hannah
  • birmingham, AL
  • Friday, April 14, 2017
Back in January of 2017 I noticed that my mare was no longer eating on the road. She used to eat anything and everything you put in front of her so her not eating quickly became a concern of mine. I tried using a different brand that offered gastric support and it never worked. So in February I had her seen by my vet who said she was 150 pounds underweight (she was getting 2 scoops of quality grain, free choice hay, and a different brand of gastric support supplement), he had me run an ulcer treatment through her (omerprazole), switch feeds and put her on MVP's Gastro-Plex for additional gastric support. Within 45 days i could see a drastic change in both her body condition and personality. she now drinks and eats on the road and stands tied at the trailer calmly. MVP helped me get my horse back to running better then ever!
  • Jennifer
  • Morton, IL
  • Thursday, March 23, 2017
I battled with gastric issues for years with my horse and was going to retire him at only 17 after the season end last year. I tried countless things and still struggled to get into the gate every time. He'd climb fences, walls, and even tried climbing up the hood of a truck once. Everyone knew when I was up to run just by the sound of the ruckus at the gate. I was told about Gastro-Plex in October and the paste during a whole weekend, and as the weekend went on getting in the gate became easier each time. By the end of November we were going in the gate with minimal issues, so I was sold. I started him on the daily pellets and am getting ready to start the new season and I see a dramatic improvement in his attitude while working the pattern at home and I made a practice run the other day and had no issues. I am grateful for this product and am looking forward to getting more seasons out of my horse now. Thank you MVP!!!
  • Cheyenne
  • Vian, OK
  • Wednesday, September 28, 2016
Both my mares love this product! It helps them in times of stress to keep their stomachs settled! We love our MVP!
  • Lindsey
  • Tuesday, August 9, 2016
I have tried every gastric support supplement under the sun and this one wins hands down! Very palatable, no wasted crumbs in the bottom of the bucket. My horse has never looked better!
  • Penny
  • Jefferson, WI
  • Monday, April 25, 2016
I was previously using another "gastric support supplement" from another vendor when I found out my young mare had severe ulcers. During the course of her veterinary medical treatment with omeprazole, my veterinarian recommended that I start her on this product as well for gastric maintenance. While not able to know for sure if the results and change in this mare were a result from the GastroGard/UlcerGard or this product or both - there is an extreme difference shown in this mare for the better. As I was so pleased with the progress of my mare, I decided to switch one of my geldings off of the "other product" onto Gastro-Plex as he was showing signs of not appreciating being touched on his sides nor on his sternum. After two weeks of this product he no longer pinned his ears or tried to bite when brushing or touching his sides and showed improvement when touching his stenrum. It has now been about 4 weeks into this product and today he did not pin his ears or try to bite when brushing him - ANYWHERE! I strongly recommend this product. In fact, I am switching all of my horses over to this product.