Unlock your Horse’s Full Wellbeing

70% of your horse’s immune system is in the gut. The latest research links gut health to behavior, appearance, and overall wellbeing.

A well-balanced gut is the key to unlocking a strong immune system and a happier, better looking horse.

The benefits of

DigestiveHP

The benefits of

DigestiveHP

Improved nutrient digestion and absorption

Consistent, healthy appetite

Promotes topline

Healthy coat and hooves

Protects your horse from hidden toxins

Robust gut and immune system

Optimal energy for pre and post performance

Improved manure quality

Ingredients

Developed with Experts.

Backed by Research.

DigestiveHP was developed in collaboration with leading microbiologists, veterinarians and equine nutritionists to deliver targeted gut support for performance horses.

Each ingredient is scientifically validated to provide measurable benefits at the microbial and cellular levels, ensuring real, lasting results.

Dual-Action pH Buffers in DigestiveHP combine seaweed-derived calcium (from calcified red marine algae) renowned for its open honeycomb structure and superior buffering capacity with

magnesium hydroxide, a fast-acting, research-backed buffer.

Together, they help neutralize excess stomach acid and support a balanced pH and create a longer-lasting protective layer in the stomach - unlike short-acting antacids that offer only temporary relief.

DigestiveHP contains an advanced blend of prebiotics and a next-generation TruEquine™ postbiotic that work together to protect and repair the gut. It features a natural postbiotic technology that delivers targeted metabolites to support gut health, helping horses better manage stress (including post-exercise cortisol) and maintain cartilage integrity - supporting overall resilience and performance.

TruEquine™ is a patented, next-generation postbiotic trusted by veterinarians and backed by over 80 years of fermentation expertise, 40 years of equine research, and 17 peer-reviewed studies. 

What TruEquine™ delivers:

• Promotes a resilient, balanced gut microbiome

• Enhances nutrient absorption and fiber digestion

• Supports a strong, responsive immune system

• Helps horses better cope with stress, transport, and environmental changes

• Speeds up post-exercise recovery with proven metabolic benefits

Digestive enzymes enhance feed breakdown and improve nutrient absorption - essential for horses needing precision digestive support. Horses naturally have low and variable levels of the enzymes needed to digest starch efficiently, which can lead to undigested grain and digestive upset.

DigestiveHP contains concentrated carbohydrase enzymes derived from fermentation sources. These enzymes are backed by research to significantly improve starch digestion, especially when grains are part of the diet.

DigestiveHP contains five amino acids essential for maintaining gut wall integrity, muscle recovery, and overall health. L-Threonine, L-Glutamine, L-Proline, L-Serine and L-Leucine are designed to improve mucous production and reinforce gut wall support to reduce susceptibility to injury.

DigestiveHP provides a carefully balanced Calcium to Magnesium ratio to support optimal nutrient absorption and overall health. An imbalanced ratio, especially with excess calcium, can interfere with magnesium uptake, potentially leading to weakened bones, poor growth, and impaired energy metabolism. Maintaining the right balance is essential for bone strength, healthy nervous system function, and balanced behaviour.

DigestiveHP includes ETX-5, a dual-action (toxin deactivation and binding) mycotoxin binder designed to support horses exposed to mycotoxins commonly found in stored feed and pasture. Unlike conventional binders, ETX-5 is formulated to target both polar and non-polar mycotoxins-without binding essential nutrients. This ensures effective detoxification while maintaining optimal nutrient availability, helping to protect gut health and overall performance.

Your Horse’s Health Journey

Month 1

Gut starts to repair

Manure is firming up

Shinier coat

Month 2

Healthier appetite

Improved feed conversion

Calmer behavior

Healthier hoof condition

Month 3

Improved topline

Better performance and responsiveness in training

Overall wellness and condition

*Results vary — some horses take longer to respond as their gut microbiome restores balance. If there are no obvious symptoms, changes may be subtle, like better hoof growth or immunity. Consistency is key. Long-term gut health, paired with the right diet and Digestive HP, supports lasting performance and well-being.

The Pioneering Gut Health Supplement

DigestiveHP

vs

Regular Gut Health Supplements

Sugar Free and Safe for Metabolic Horses.

Mycotoxin Binder Included

No Fillers or Grain By-Products

Active Ingredients at Effective Levels

Inclusion of Postbiotics as well as Prebiotics

Amino Acids & Digestive Enzymes

Optimal Calcium to Magnesium ratio

Supported Modes of Action

5

BRAND B

Low

Low

3

BRAND C

Low

Low

1

5

BRAND B

Low

Low

3

BRAND C

Low

Low

1

Thousands of incredible horse transformations

Don't just take our word for it.

Hear it from our regular customers.

Horse Owner Approved

Real and honest reviews from horse owners using DigestiveHP

These results reflect the unique experiences of real customers. These observations are not intended to replace advice from your veterinarian and are not guaranteed.

Customer Reviews

Overall rating: 4.5 / 5 from 191 reviews.

Excellent response from my horses digestive tract using this product.

My mare Pearl has been on Digestive HP for over a year now. She is 22 with quite the health history. She always had a beautiful shiny coat and great feet until Cushing's. A friend suggested I try Digestive HP and in just a few weeks the change in her coat was amazing, and it wasn't long before I noticed an improvement in her feet. Then 4 months ago I brought Pearl home, and with her Cushing's being on turn out 24/7 was definitely challenging. We started her on Metabolize 2 months ago and wow, it's been amazing! In just a few days I could see the fat deposits were disappearing. She is happy, dappled, and like her old sweet self. So thankful for Poseidon's great supplements!

My horses have been on the paste when traveling or horse shows, along with the powder for the last year and 1/2. No colic, no anxiety, coats look outstanding and they love their cow work!! Thank you

Dear Dr. Roddy, We started Poseidon Metabolize mid February as my horse developed metabolic laminitis . Testing done in December had indicated an insulin level at 180 on a scale of 10-40., but we had little dietary guidance from our vet. At onset of laminitis I sought a prescribed diet from an equine nutritionist of reduced starch and sugar, vitamin and mineral supplements , including Metabolize and Digestive HP. I am forever grateful for your personal phone call at that difficult time in early February. These photos show the results obtained in just 10 weeks on Poseidon products. Labs done in mid-March showed his insulin levels at 63 instead of 180 after the first 4 weeks on Metabolize.

My horse has completely changed his appearance, more focused less anxiety under saddle . His tail and even his forelock looks thicker . So shiny . He been on this project coming 3 months now

Finny has had ulcers and lacks forward energy. He seems to enjoy running around and jumping now!

She’s feeling great under saddle. Still monitoring ulcers

I have three horses on Digestive HP and they are all doing well. Our mare had ulcer trouble and had some resentment towards the right leg aide. That all disappeared on Digestive HP. My older gelding’s coat is glowing and he has great gut health. Our new horse had some behavioral issues and poor hoof health. He has made huge improvements on Digestive HP and Metabolize. Great products all around.

We travel Internationally with our horses and we love having a product we can depend on and that’s safe and effective. We feel so good using this in our feeding program Especially while traveling we don’t worry as much about the gut upset during any travel stress

Easy to order and has kept my horses very happy!

I was hesitant at first because it’s not cheap. But after a few years of not much of an improvement with the SmartPak’s my horse was on, I had to give it a try. And honestly, it wound up being less than the SmartPaks. He was having extremely loose manure and was a little irritated when being ridden. We started him on the DigestiveHP in July 2025 (left picture) the picture on the right is from today February 19th 2026. Look at that butt and tail!!! He has been so much happier riding wise, still gassy every once in a while but soo much improvement in the quality of his manure. I do wish it could be a pellet instead of a powder. It is a lot. But we split it between his two feedings and wet it slightly so it sticks. Other than that we love it and will keep feeding it.

I’m so pleased with this product, I have an IR/ulcer prone mare. This has helped with her general overall condition, top line, and behavior. She is happy being groomed and in her work. Thank you

Love love this! My horse that had great hooves, coat, poop and top line improved in all cases. He is definitely ulcer prone. He is much improved in the two months on this!

I have been using the digestive HP for two months now my broodmare is feeling like a 2 year old again. Her coat is amazing

I found it fabulous fo helping William.

My horses look amazing

Both horses are on the powder twice a day and paste when they travel for shows and while they are there. I’ve had excellent results and supported by Dr. Erin Roddy part of your veterinarian team have learned how important it is to balance their gut. This product has changed these horses health, performance and mental wellbeing. Thank you

Dr. Martha Faraday recommended the Posideon for my horse after he experienced kidney failure (it’s a long story)! He’s doing fantastic and I am so happy! Thank you!

Since March I am giving my horse Digestive HP. He’s doing so well No more upset gut and his behaviour is so much calmer than before. He looks and acts very happy and is more focused in the dressage arena. I won’t stop giving him this amazing supplement.

Definitely helped him get over the ulcer symptoms we’ve been struggling with.

The first pic is before I gave the Digestive HP to my horse Blue. His gut wasn’t healthy. Second and third pic is after the loading dose giving him 2 scoops a day. His coat is so shiny and he performs so well. He’s more relaxed and is happy since using Digestive HP

This is my 34 year old per Ron quarter cross. My kids safe steady girl. A true babysitter. She has fecal water syndrome and your product has helped me keep her clean, healthy, and happy. I didn’t think there was a product out there that would work. I thank you for that. I was afraid I was going to have to put her down soon. I also use it on my other Police horse. She was diagnosed with ulcers a month ago and it has made a large improvement in her ulcers. And one very happy customer.

I have been giving it to my endurance horse as a preventative for ulcers. So far so good.

My horse has been having immune and health issues. He had been on pre/probiotics for years, but I decided to completely change his diet to try to support him better. The nutritionist I'm working with recommended Digestive HP and it has made a huge difference. His body is much less touchy and his attitude is better. I was a little worried that he wouldn't eat it since it's a large scoop of powder, but he does.

I am not a big one to write a review but this gut supplement has truly been a game changer. My mare has terrible fecal water syndrome as well as being a super picky eater this supplement has made a 180! Within days on this her butt has been clean and dry and she is licking her bowl clean, she also seems so much calmer and comfortable- we aren’t even though the introductory dose yes but man this has made a tremendous difference! So grateful and thankful!

I’ve been very impressed with the Digestive HP. My sweet gelding is ulcer prone and I have tried so many products. Some were helpful for the short term, and others didn’t do much of anything. I hated the idea of giving him omeprazole long term. We are almost 2 months in and I see such a difference in his overall demeanor. He’s more relaxed and social and moves out in a forward way under saddle. His dapples are coming back, he’s my cuddly giant again. I also started using the Stress Paste and that was immediately helpful. I will be keeping that on hand for showing, trailering, etc. Thank you for this wonderful product!

I can’t believe the results after many years of trying different products posidon has really nailed it My horse is finally putting on weight and is performing at her best Absolutely love it

PollyAnna has been on Digest HP for a little over a month now. Definitely does what it says it will. Better stool, better skin and generally feeling better in movement and work! I am pleased and will continue using this product. Thank you

I started my very picky OTTB mare on Digestive HP. In the years I’ve had her she’s been on multiple gut supplements. They’ve made her agreeable, but Digestive HP made her eat. This mare was the type to never lick the bowl clean and usually only made it halfway through a meal before losing interest. Her first week on Digestive HP she was licking the bowl clean and has been ever since. She has also mellowed out some under saddle and been filling out with more muscle and fat over her ribs. I am very excited to see in the next few months how this helps her hoof health as well. Because of her success I have put multiple other horses on it as well. Digestive HP has made a noticeable difference for my heat sensitive gelding. He maintains healthy manure now in the heat and when traveling. I am very pleased with Digestive HP and grateful to have this product available for my horses!

Digestive HP has been nothing short of a miracle for my horse, Willow. For the past three years, Willow has been unrideable and has struggled with her appetite, rarely finishing her food. However, since starting Digestive HP, she’s not only eating all of her food but is also showing signs of improved health and energy. Seeing Willow enjoy her meals and regain her vitality has been incredibly heartwarming. It’s a huge relief to see her so much happier and healthier. Digestive HP has truly transformed Willow's life, and I couldn't be more grateful. Highly recommend this product to anyone with a horse facing digestive issues!

My now 4* horse was as a 2* horse a particularly challenging devil. There was no right turn. He just stood on his hind legs. Within a week of going on HP he turns right like a charm. Happy gut, happy horse, happy rider

I can't believe the incredible transformation in my horse, Barbie, since we started using Digestive HP! She used to be quite a marey mare. Her overall demeanour has improved drastically—she's so much calmer and happier and her coat is so shiny! Barbie is working better than she ever has! She's more energetic and responsive, making our training sessions a joy. I couldn't be happier with the results. Digestive HP has truly made a world of difference for Barbie. Highly recommend!

Both our big warmblood Spider and our superstar eventing pony Poppy are on Digestive HP. After colic surgery in 2022, we used HP as an integral part of Spiders recovery. He had been tricky to feed and keep condition on without being hot and stressy for some time. A bout of extremely hot weather put him off his feen and he colicked. He had lost significant condition due to the surgery, and we used HP to help him reestablish a healthy gut. 2 years on and he is fat, happy, and no recurrences of the gut issues. We now feed him less than we ever have, and he looks and feels super. Our super pony Poppy has been on HP as part of an ulcer prevention gut health plan for some time. She is competing at 1* eventing and up to 1.30 showjumping, and at only 14.1, needs to be very fit. HP has helped us maintain her gut so she is able to utilise her feeds well without the need for a lot of high energy feed. She has also been prone to ulcers, and we find HP helps in their management.

My trainer asked me to try Digestive HP for one of my horses with skin problems. This horse doesn’t drink enough either. I also ended up using it for all three of my horses. All three had a more consistent manure and the one that I get concerned about his reduced drinking is drinking more! His manure looks consistently better, and I think his skin has improved.

I have been feeding Digestive HP since December and within 5 days noticed a massive improvement in one horse who has been struggling with picking up her right canter lead even though she’s 15yrs old. My main showjumper stopped picking up the left canter lead in a show jumping round and is now much more willing. My daughters pony has given her the run around the entire time we have had him and since being on Digestive HP has stopped running out at jumps and is much more obliging 😅 I have all of our horses on it now and have recommended it to a few people who have noticed a difference in a matter of days! It’s affordable and everyone should at least try it. Thank you!

Holly has transformed over a month with the help of Poseidon. Day 1 we slowly introduced Digestive HP, while reviewing her diet - this was incredibly important for nutrient absorption AND supplement efficacy. Once we had her diet specifically formulated for her, it was almost set and forget! We continued with high fibre forage and low stress, low impact training. With such a holistic yet simple approach, Holly’s physical attributes, trainability and calmness under saddle developed enormously! This process is essential with our team. It not only saves my clients and I time and money, it creates a happier and healthier horse!

Digestive HP is a game changer, my horse has improved in a whole lot of ways. I can go for rides without him getting stressed and losing weight. His manner has changed from a horse that doesn't want anything to do with me to one that loves being around anybody now. Love it ❤️

I didn’t realise you could get such a shiny grey coat until I found this stuff! It is amazing.

Our racehorse condition really improved and he has dapples. Great stuff

Anyone wanting to know how good this product is i have found it to be the saving grace for my QH. Nearly 4 yrs out of work with sore back and cranky and unable to even touch his stomach area particularly bad on right side as he pinned ears back and gave warning bites intermittent temps of 42. Tried 3 different vets had all the blood and urine tests, ultrasound, xrays, adnominal taps and not one vet could find the reason or help him. We are now about to start his 3rd 4kg bucket of digestive HP and hes back in light work being led of my other horse doing 10kms a day and no more pain hes happy and back to his normal self. I am so grateful for this product and the advice given to me by them. Weight or eating was never a issue for this horse hes always held weight.

FAQ

DigestiveHP is a complete, premium gut health supplement, designed to maintain and strengthen equine gut health.

Benefits of great gut health are:

  • Healthier appearance and hooves

  • Happier, easier behavior

  • Stronger appetite

  • Stronger immune system

When gut health is compromised, it can lead to reduced hormone and vitamin production, poor appetite, inefficient digestion and decreased energy supply.

Research continues to reveal the importance of a healthy gut, and the impact that can have on rider safety and overall horse welfare.

By providing nutrition that supports gut health, we can enhance a horse’s mental and physical well-being, improve behavior, and optimize performance

Whilst you may see similar benefits with these products, their intended usage is what makes DigestiveHP and Stress Paste fundamentally different.

DigestiveHP is the daily gut-health supplement that supports your horse through their day-to-day stressors, to keep them healthy, happy and performing at their best.

Available in both 10lb sachets and 40lb pails, the powdered form makes it ideal to mix with feed. 

Stress Paste plays best in instances of acute stress, designed to deliver immediate gut and nervous system support in the face of high impact events including competition, travel and extreme weather. Stress Paste is also recommended when first starting DigestiveHP to provide that extra buffer support at the very beginning.

Conveniently formulated in a concentrated paste, Stress Paste is easy to give ahead of known or predicted stressful events.

Horse owners who are using DigestiveHP often report seeing improved changes in as early as 4 weeks, with horses appearing calmer and more settled.

Another noticeable improvement is in the consistency of manure. Some horses that have been scouring for months have reportedly formed solid manure within days of using our digestive gut supplement.

In 2 months, horse owners are beginning to see improved top line and condition, particularly noticing filling out above the flanks around the loin area.

After 3-4 months people are consistently noticing significant behavioral, performance, and recovery improvements, as well as a noted improved suppleness under saddle and putting on weight.

If you don’t see a result that quickly, don’t panic. Every horse is different with some taking longer to respond due to repopulation of healthy microbes, particularly in their hindgut. If your horse doesn’t have obvious outward symptoms of gastrointestinal upset, positive changes are going to be less obvious but can be as subtle as improved hoof growth and increased immunity.

But remember, seeing the results is just the start. Supporting optimal digestion and the health of your horse’s gastrointestinal tract longer term with the correct diet in combination with DigestiveHP will ensure optimal health and performance into the future.

As part of the research and design phase of our digestive gut health supplement, we initially conducted trials with an early formulation. This formulation was tested on a variety of horses across different disciplines, yielding consistent reports of improvements in condition, topline, behavior, manure consistency, performance, appearance, and stress resilience. Since then, the formulation has only improved, further enhancing these benefits.

Additionally, a separate field study was conducted by Professor Andrew Dart (BVSc PhD, Dip ACVS, Dip ECVS) from the University of Sydney, with a cohort of randomly selected horses. The results showed a remarkable increase in feed conversion, with some horses experiencing up to ninefold increases in weekly weight gain. Prof. Dart commented, "It is difficult to dismiss the relationship between weight gain and the addition of this supplement."

Ingredient selection is at the heart of what we do. In DigestiveHP, we only use raw ingredients that have been extensively researched across multiple species, meeting the highest standards of scientific evaluation. Each ingredient is carefully chosen based on its proven functionality, with inclusion rates aligned with research to ensure their effectiveness in equine health. While we don’t conduct the original research on individual ingredients, we source only those that are backed by robust science and incorporate them into a formulation designed specifically for horses.

DigestiveHP is now supported by testimonials from horse owners and receives strong support, recommendations, and endorsements from veterinarians.

Yes it is. Like everything with laminitic horses, introduce it slowly, just to be on the safe side. Laminitis can be unpredictable, so slow is always best when adding something new to their diet.

Yes, DigestiveHP can be safely fed to pregnant and lactating mares to support their gut health and potentially also their milk production. It should be fine for foals to nibble on a bit of their mother's feed containing DigestiveHP. However, as there aren't studies specifically aimed at foals for a majority of the ingredients, we can't recommend giving it as part of a foal's feed. 

As DigestiveHP includes ingredients specifically designed to address gut health, it should be safe to feed alongside most other feeds and supplements. You may find that with the addition of DigestiveHP and a balanced diet with vitamins and minerals, your horse may not need additional supplements. For example, DigestiveHP contains a good amount of calcium, magnesium and a toxin binder, so if you are already feeding another supplement with those in it, you may find you can cut it out. No need to waste money on over-supplementing.

Please note that our supplements are not complete feeds and should be paired with a balanced diet and adequate amounts of forage.

A 10lb sachet will normally last a 1000lb horse 35 days.

Digestive HP

Digestive HP

$133.00

Size 10lb Bag
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