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Gastro-Plex Pellets

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Product Overview

Supports healthy gut function

Gastro-Plex Pellets are a palatable supplement designed to support healthy gut function. The key ingredients in this comprehensive formula include antioxidants, amino acids, licorice, and a propriety blend of herbs (aloe vera, marshmallow root powder, fenugreek seed power and papaya) to help soothe and support the stomach lining. In addition, it provides prebiotics and probiotics for normal digestive function.
  • Provides targeted ingredients to help maintain healthy stomach tissue lining
  • Also includes prebiotics and probiotics for normal digestion

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Key Ingredients


Supplement Facts

Ingredient Name Amount Per Serving
Ingredient Name Amount Per Pound

Ingredient Details


Weight Recommended Amount Loading Amount

How the Ingredients Work


Supporting Success

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The reviews provided on this website represent the experience of the individual posting the review. We do not adopt, edit, or endorse any of the submissions posted within the reviews section. Rather, the reviews are part of an online community of animal owners that desire to share their particular experience with other individuals. These reviews are not a substitute for discussing the health of your animal with a veterinarian.

SmartPak customers are some of the most conscientious animal owners around. We encourage you to share your experience with the products we sell to help fellow customers to make informed choices for their animals. We do not edit these reviews in any way - they are direct customer-to-customer communication. We do monitor reviews for positive and negative feedback, and use this feedback to improve our selection as well as sharing feedback with product manufacturers to help them improve their products. Please note that we recommend consulting your vet with serious health issues.

Gastro-Plex Pellets is rated 4.7 out of 5 by 13.
Rated 2 out of 5 by from Hasn't improved my horse's gut digestion This is quite an expensive product for not improving my horses digestion. It hasn't made his fecal matter worse, I used 2 products that gave him massive diarrhea after one dose, but there has been no improvement after a week's use, while I tried smartdigest paste and saw improvement in just half a dose, and the best gut microbiome supplement was actually proviable DC for dogs and cats. I saw drastic improvement with his fecal matter, his mood, and his belly within a few doses. The best part is that I only need 2 pills(large dog amount) to see a drastic improvement. I was pretty disappointed with Gastroplex and how expensive it is but every horse is different.
Date published: 2021-06-13
Rated 5 out of 5 by from Pleasantly Surprised I brought both my boys home recently from a small muddy pasture to 2 acres of wonderful grass. My arab cross, who has traditionally been a picky eater but was eating well, became very reticent to eat his special blend/alfalfa pellets and normal supplements he was on before the move. I tried wetting it and switching him back to plain alfalfa pellets, with minimal improvement in appetite. He was also ignoring the grass at times and actively pawing and eating a large rotting stump versus fresh grass or alfalfa hay - this isn't right... To top it off, he was becoming excessively cranky about even light leg on his right flank while under saddle. I didn't want to put him on a PPI and started researching gut supplements with low expectations - I had him on a high cost total gut supplement in the past and it did nothing for him except cause diarrhea. I picked this supplement on a whim, and wow has it made a difference. I was concerned at first due to the strong smell of the pellets, I'm thinking there is no way this horse is going to touch this. The horse loves it, and within a couple days he's eating his grain, his supplements, hay and leaving the stump alone. Five days in and now he's running up from the pasture at feeding time and whinnying for dinner, no joke. I really had low expectations that a bunch of random herbs and minerals would do much for him, but I was very wrong. I haven't been on him since hes seemed to start feeling better but am hopeful he will be less grumpy under saddle as well.
Date published: 2021-04-26
Rated 5 out of 5 by from Great features This pony loves this product!! He looks forward to eating it !!His coat looks amazing!!
Date published: 2020-08-12
Rated 5 out of 5 by from Great stuff The gastroplex really helped my nervous barrel horse. It calmed his stomach and he could perform much better.
Date published: 2018-11-23
Rated 5 out of 5 by from Another MVP Success I have a 4 year old Trakehner who is undergoing treatment for EPM. In addition, he is the kind of horse who is ulcery by nature. I purchased this to follow up 30 days of UlcerGard and am pleased with the results. He is cleaning up his meals, and is better about eating hay during the day. He is less reactive to girthing, and his overall demeanor seems more settled.
Date published: 2018-09-28
Rated 5 out of 5 by from Saw good results for my gelding He was showing signs of minor ulcers, since I had switched his routine and put him in a stall during the day, instead of full pasture, for weight management and uv exposure reasons. The signs went away with this product after a few weeks. I just dont want to overdo the licorice root. I also have him on hilton herbs freeway, and omega horseshine. I have had excellent improvements with those as well. I believe it worked excellent and will probably use it again this coming fall
Date published: 2018-06-22
Rated 5 out of 5 by from Nice product! My gelding has been looking better after starting him on Gastro-Plex!
Date published: 2017-10-27
Rated 5 out of 5 by from great ingredients I really like the quality of the ingredients. This smells so good and my mare loves it! It makes me feel good to know that this is protecting her every single day.
Date published: 2017-07-11
Rated 5 out of 5 by from Worked great! I bought this about 6 weeks ago and it has helped greatly. About 3 weeks in my horse had to go on antibiotics and this kept him from getting an upset stomach on top of everything else and my horse eats it right up
Date published: 2016-09-28
Rated 5 out of 5 by from What a difference Per my vet diagnosing my ultra grumpy gelding with hind gut users I began adding powdered marshmallow root to his diet. He wasn't happy about eating it but with the addition of molasses he begrudgingly ate it. Fortunately the results were fenominal. Everything improved, his attitude, his gaits, his desire to try, and best of all he could stretch his hind legs behind himself. As he hated the marshmallow root powder, my search for a pelleted SmartPak supplement containing it began. So far Gastroplex is keeping him happy and comfortable. The fact that he readily consumes the pelleted Gastroplex is an added bonus.
Date published: 2016-09-24
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