In this article:
- The Dangers of Sudden Feed Changes in Spring
- Disruption of the Gut Flora – What Happens in the Horse's Intestine
- Endotoxins & Laminitis – Underestimated Risks of Pasture Grazing
- How Zeolite Specifically Helps with Pasture Grazing
- Frequently Asked Questions About Zeolite Use for Pasture Grazing
From Hay to Lush Spring Grass
Spring not only brings warmer days and blossoming landscapes, but also the eagerly awaited time when our horses can finally go out to pasture again. This season is a joy for horse owners and their animals alike, offering the opportunity for natural exercise and fresh feed. However, the transition from hay to lush spring grass also carries risks that we, as responsible horse owners, must not underestimate.
The Dangers of a Sudden Change in Feed
When our horses are led back to spring pasture after winter, the abrupt change in their feeding plan can lead to significant health problems. To better understand these, it is helpful to consider the following three main dangers:
1. Disruption of the Gut Flora
The digestive systems of our horses are adapted to a specific composition and amount of bacteria in the gut, primarily geared towards processing hay and straw. This roughage promotes the multiplication of bacteria that can break down cellulose. A sudden intake of fresh, carbohydrate-rich grass leads to a drastic change in the gut microbiome. The new feed components cannot be efficiently processed by the existing bacterial strains, leading to dysbiosis – an imbalance that can cause digestive disorders such as bloating, diarrhea and fecal water.
2. Production of Endotoxins
When horses are abruptly switched to protein and carbohydrate-rich grass, many of these carbohydrates can pass through the small intestine without being fully digested. Once in the large intestine, these undigested carbohydrates are fermented by the bacteria present there, leading to acidification of the intestinal environment and the death of healthy gut flora. The breakdown products of these dead bacteria, known as endotoxins, enter the bloodstream and can trigger systemic inflammatory reactions that affect not only the digestive tract but the entire organism.
3. Risk of Laminitis
One of the most feared complications of feed changes is laminitis, a serious and painful condition affecting horses' hooves. Acidification of the gut and the release of endotoxins contribute to the development of laminitis. The high fructan content in early pasture grass, especially after cold nights, can further increase the risk, as fructans in high doses can be particularly toxic to the hoof structure.
This underscores the need to carefully manage access to early spring grass and gradually adjust feeding to protect the health and well-being of our horses.

How can Zeolite help with grazing?
Zeolite can play an important role in feeding pastured horses by helping to mitigate some of the risks associated with the transition from hay to fresh pasture grass. Here are the main benefits of zeolite in relation to feed change:
1. Binding of Excess Fructans
Zeolite has the ability to adsorb and bind certain molecules such as fructans. Since fructans in high concentrations can cause digestive problems and laminitis, the addition of zeolite to the feed can help reduce the amount of these carbohydrates that reach the intestine and cause problems there.
2. Stabilization of the Gut Flora
Due to its adsorbing properties, zeolite can also help bind toxins and other harmful substances that arise in the gut when horses are switched to fresh pasture. This contributes to maintaining a healthier pH value in the gut and supports the balance of the gut flora. A healthier gut flora minimizes the risk of digestive disorders such as diarrhea and colic, which often occur with sudden feed changes.

3. Reduction of Toxin Release
If less undigested fructans reach the large intestine due to zeolite application, the production of endotoxins is reduced. These endotoxins normally arise when bacteria break down excess fructans and can trigger systemic inflammatory reactions. By reducing the amount of endotoxins that enter the bloodstream, zeolite can help reduce the risk of inflammation-related diseases such as laminitis.
4. Support for Detoxification
Zeolite can generally support the detoxification processes in the horses' bodies. Due to its porous structure and ability to bind heavy metals and other toxins, zeolite helps to free the body from absorbed harmful substances, which contributes to the overall health and well-being of the horse.
In summary, zeolite offers a natural and effective way to support the digestive system while minimizing the risks associated with feed changes.
Study References
The connections between fructan intake, endotoxins, and laminitis in horses are well-documented scientifically. Studies on the effect of clinoptilolite zeolite on gut flora, toxin binding, and fecal quality in animals can be found in our detailed study summary – with all sources and DOI numbers.
👉 Zeolite for Fecal Water – Efficacy & Study Situation →
Customer Reviews
⭐⭐⭐⭐⭐ Stress-free grazing start "Our older gelding always had problems when starting grazing – soft stool, restless, ate poorly. Since we've been gradually introducing zeolite, the transition every spring has been much calmer." — Verified buyer, HORSEKRAFT Zeolite Powder
⭐⭐⭐⭐⭐ Fecal water during pasture change "We've tried many remedies and even the vet couldn't find a cause. After we started feeding Steinkraft Zeolite, we noticed an improvement week by week. The bloated belly disappeared and the horse no longer had to constantly pass gas." — Renate & Sandra, HORSEKRAFT Zeolite Pellets
⭐⭐⭐⭐⭐ Prevention during grazing "My horses get it as a preventive measure and they love it. Both lick the bowl completely clean." — Pia M., HORSEKRAFT Zeolite
⭐⭐⭐⭐⭐ Poisoning by pasture plants "It was used on donkeys and horses and freed them from a nasty poisoning by poisonous plants in hay in just two weeks. Highly recommended, bought multiple times!" — Asino F., HORSEKRAFT Zeolite Powder
Read all experiences from horse owners → ⭐⭐⭐⭐⭐ 4.96 out of 5
Frequently asked questions about the use of zeolite to support our horses during grazing:
1. How much zeolite should I give my horse? How do I dose zeolite correctly?
The dosage depends on your horse's body weight:
- Pony up to 250 kg → 10–20 g daily
- Small horse 250–400 kg → 20–30 g daily
- Large horse 400–600 kg → 30–40 g daily
- Draft horse over 600 kg → 40–50 g daily
We always recommend starting with half the amount and gradually increasing within 7–10 days – especially if you start 2 weeks before grazing. The included measuring spoon holds 10 g level.
👉 To the complete dosage instructions with table
2. When should I start feeding zeolite?
Start 2 weeks before your darling begins grazing; then he will already be accustomed to the natural mineral, you will have established a feeding routine – we are practical – you will already know how he eats it, how to dose it well; and you can focus on lovingly observing his grazing.
3. How long should I feed zeolite?
Zeolite can be used short-term during transition phases, such as pasture changes in spring, or long-term for feed optimization.
4. Can zeolite help with other health problems of my horse?

In addition to supporting feed changes, zeolite is known to have a number of other benefits, including improving general digestion, aiding in detoxification, and possibly alleviating symptoms of chronic diarrheal diseases. Zeolite can also help improve general well-being and strengthen the immune system.
Read on here >>>
Zeolite for Horses: Everything you need to know.
5. How does zeolite work in my horse's digestive system?
Zeolite primarily acts in the digestive tract through its adsorption properties. It can bind pollutants, toxins, and excess nutrients like fructans, thereby reducing the likelihood of fermentation processes and acidification in the gut. These binding properties help maintain a healthy pH balance in the digestive system and promote a more stable gut flora, ultimately leading to improved digestion.

Mindfulness towards our horses is a profound expression of our love for life in all its facets.
By embracing the seasons and their transitions as natural cycles of life, we open ourselves to new experiences and learning opportunities. The careful transition of our horses to pasture in spring, supported by zeolite, demonstrates our endeavor to live in harmony with the rhythms of nature. It is our wish to support the well-being of our loyal companions in every phase and to enable them a gentle transition into the fresh and invigorating season.
Spring is coming – and with it the chance to give your horse the gentlest transition to pasture. Start with zeolite two weeks beforehand, introduce it slowly, observe calmly. Your horse will thank you for it.
👉 HORSEKRAFT Zeolite Powder – start now
👉 HORSEKRAFT Zeolite Pellets – dust-free & practical
👉 Read dosage instructions
Read more? YES!
Delve deeper into the topic of zeolite for horses >>> Challenges for our horses in spring
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Another question? 🐴
Perhaps your exact question has already been answered – on our comprehensive FAQ page for STEINKRAFT Zeolith. There you'll find everything about quality, dosage, and application for humans, animals, and gardens. And if not: just write to us. We will reply personally.
👉 To the FAQ page →


