Psyllium Hydrophilic Mucilloid

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SIL-ee-um HYE-druh-fil-ik MYUS-uh-loid - Pronunciation guide

Brand Names

  • Equi Aid Natural Psyllium Fiber Pellets
  • Equi Aid Natural Psyllium Fiber Powder
  • Miracle Sand Out Pellets
  • Sand-Rid Psyllium Pellets


Psyllium hydrophilic mucilloid is derived from the ripe seeds of varieties of Plantago species. The seed coating has a high hemicellulose mucillage content, which swells in the presence of water, making it a major component of bulk-forming laxatives.


Psyllium hydrophilic mucilloid is used in horses that have a problem with constipation, and some veterinarians recommend it for treatment of sand colic. By swelling as it absorbs water, psyllium increases bulk in the intestine and is believed to induce peristalsis and decrease intestinal transit time. In treatment of sand colic, psyllium is thought to help collect sand and lubricate its passage through the gastrointestinal tract.

Dosage and Administration

Method Dosage
(click row for calculator)
Concentration Period Duration
Oral 5-7.5 ounces 20450 mg/ounce Daily for 7 days Repeat Monthly


  • The duration of administration depends on the condition being treated, response to the medication and the development of any adverse effects. Be certain to complete the prescription unless specifically directed by your veterinarian. Even if your equine appears to feel better, the entire treatment plan should be completed to prevent relapse.
  • This medication may be available in forms and concentrations not noted in the above table. Always check the label and literature provided with the medication about the form and concentration and DO NOT USE the calculator if the information differs.


Bulk-forming laxatives should not be used when prompt intestinal evacuation is required, in cases of fecal impaction, or if an intestinal obstruction is present.


Because the potential exists for bulk-forming laxatives to bind digoxin, salicylates, and nitrofurantoin, it is recommended that bulk-forming laxatives be administered at least 3 hours apart from other drugs.


If administered with sufficient liquid, psyllium overdose should cause only an increased amount of soft or loose stools.


EquiAid Psyllium Hydrophilic Mucilloid PelletsEquiAid Psyllium Hydrophilic Mucilloid Pellets

SandClear Psyllium Hydrophilic MucilloidSandClear Psyllium Hydrophilic Mucilloid



About the Author

EquiMed Staff

EquiMed staff writers team up to provide articles that require periodic updates based on evolving methods of equine healthcare. Compendia articles, core healthcare topics and more are written and updated as a group effort. Our review process includes an important veterinarian review, helping to assure the content is consistent with the latest understanding from a medical professional.