Diarrhea in horses is a common problem ranging from a single soft stool to severe, prolonged episodes that can become life-threatening. This article covers the main causes, symptoms to watch for, when to call the vet, and how to support your horse through recovery.
Causes of diarrhea in horses
The most frequent triggers are sudden feed changes, stress (transport, competitions), parasites, antibiotic use, infections, toxins, and high-starch rations that disrupt the cecal microbiome.
Symptoms and red flags
Watch for fever above 38.5C, dehydration, lethargy, colic signs, blood in stool, or rapid weight loss. Any of these signs requires an immediate veterinary call.
How to support recovery
Provide constant clean water, do not fast the horse, slowly reduce concentrates, support gut flora with probiotics. Elektro+ replaces electrolytes lost through diarrhea. Lacta Ease supports digestive recovery. PH helps maintain a healthy stomach pH.
Prevention
Make all feed changes over 10 to 14 days, manage stress around transport and competition, follow a vet-led deworming schedule based on fecal egg counts, and ensure access to fresh water. Read more in our knowledge base.