A horse's stomach is structurally sensitive and prone to damage, especially when feeding rhythm, stress, training, or fasting periods place a burden on the stomach. For this reason, gastric ulcers are a common research topic, particularly in sport and performance horses. At the same time, interest has also focused on nutritional factors that affect stomach contents and mucosal protection.
Pectin and lecithin often appear together in research because they act in the stomach in different but complementary ways. They are not examined as medications, but as part of feeding and gastric physiology.
The Stomach, Acid, and the Mucosa – Why Does Structure Matter?
In the horse's stomach, acidity is not distributed evenly. There are areas where acid concentration is high, and areas where the mucosa is more vulnerable to damage to its protective layer. Studies have shown that the physical structure of stomach contents—whether contents are watery, layered, or more uniform—affects how acid comes into contact with the mucosa.
In this context, soluble fibers and fats connected to the surface structure of the mucosa have become topics of interest. Pectin and lecithin represent precisely these two different perspectives.
Pectin – A Fiber That Modifies the Structure of Stomach Contents
Pectin is a soluble dietary fiber that occurs naturally in many plants. Its distinguishing feature is its ability to bind water and form a gel-like structure. In research, this property has been central because it influences the composition of stomach contents and the way acid moves within the stomach.
Equine studies have found that soluble fibers such as pectin can make stomach contents more uniform and less layered. This does not mean the removal of acidity. Instead, it means that acid may not come into contact as easily with the more sensitive mucosa of the stomach. In this way, pectin's relevance is linked to the physical behavior of stomach contents, not to gastric acid production.
This perspective has been discussed, among other places, in studies published in the Journal of Equine Veterinary Science, where the role of soluble fibers in gastric protection has been examined from a nutritional point of view.
Lecithin – Part of the Stomach's Natural Protective Surface
Lecithin belongs to phospholipids, which are a key component of cell membranes and the surface structure of mucosal tissues. In the stomach, phospholipids form a water-repellent layer on the mucosal surface, helping protect tissue from an acidic environment.
In studies, lecithin is not viewed as a separate "protective film," but as part of the stomach's normal structure. When this phospholipid layer is intact, the mucosa tolerates acid and mechanical stress better. Lecithin's relevance therefore lies in the structural resilience of the mucosa, not in neutralizing stomach acid.
Pectin and Lecithin Together – What Has Equine Research Found?
In multiple equine studies, pectin and lecithin have been used together because they affect the stomach via different mechanisms. Pectin modifies the structure of stomach contents, and lecithin relates to the mucosal surface structure. Together, they form a structural combination in the stomach that, according to studies, has been associated with fewer mucosal lesions.
Venner et al. (1999), Lybbert et al. (2007), and Sanz et al. (2014) reported that horses whose diets included a pectin–lecithin combination had fewer occurrences or recurrences of gastric mucosal lesions compared to control groups. In these studies, it is essential to note that the combination was used as part of feeding, not as drug therapy, and that the focus was on the condition of the mucosa as assessed endoscopically.
Sanz et al.'s study published in Veterinary Record also highlighted that the combination was of interest both for managing gastric ulcers and from the perspective of recurrence, as part of an overall feeding strategy.
How Is This Interpreted in Practice?
Based on studies, pectin and lecithin are not a "treatment for a gastric ulcer," but nutritional factors that influence gastric physiology. Pectin changes the structure of stomach contents, and lecithin supports the mucosa's normal surface structure. Together, they are connected to the stomach's ability to withstand strain caused by an acidic environment.
For this reason, these ingredients are examined especially in situations where the stomach is more heavily burdened than usual, such as hard training, stress, or irregular feeding. This is a preventive and structural approach. ulceration
Summary
Pectin and lecithin appear together in gastric ulcer research because they affect the stomach in different but complementary ways. Pectin modifies the structure of stomach contents, and lecithin is part of the mucosa's natural protective surface. In equine studies, their combination has been associated with better preservation of the gastric mucosa under conditions that predispose horses to ulcers, as part of feeding.
References
- Lybbert, T. et al. (2007). Effects of a pectin–lecithin complex on gastric ulceration in horses. Journal of Equine Veterinary Science.
- Sanz, M. G., Viljoen, A., Saulez, M. N., et al. (2014). Efficacy of a pectin–lecithin complex for treatment and prevention of gastric ulcers in horses. Veterinary Record.
- Venner, M., Lauffs, S., Deegen, E. (1999). Treatment of gastric lesions in horses with a pectin–lecithin complex. Equine Veterinary Journal Supplement.
- Verry, F. et al. (2020). The role of soluble fibres in gastric protection and gastric emptying in horses.
