The use of psyllium husk and magnesium sulphate is well established as a protocol for the treatment of sand impactions in horses. Several studies exist showing that this is an effective treatment for sand enteropathy.
 
Psyllium husk are used as a sand accumulation management tool that is used in feed. Some horses are resistant to the taste and texture of too much psyllium; therefore, combining the psyllium husk and magnesium sulphate in an easy to feed palatable pellet is the perfect option.

Psyllium absorbs liquids from the intestines and swells as it moves through the digestive tract, helping eject the sand from the GIT tract. The purely mechanical action of psyllium mucilage is to absorb excess water while stimulating normal bowel elimination. 

Magnesium sulphate (Epsom salts) is the laxative most often used in the treatment of impactions. Its osmotic action results in the hydration of the impacted mass in the intestinal lumen.