Read this recent HF post for a new idea 
www.horseforum.com
Here’s a page from Mad Barn. Coconut Oil for Horses: Nutrition, Benefits & How to Feed [Review] | Mad Barn
My gelding is cured! FWS/Chronic Diarrhea
You won't believe it when I tell you this... Coconut Oil. Yup, a cup of so a day mixed in with his feed and he's been dry for a month! I can't believe it. I don't know if it will work for others, but I wanted to share it with you guys. Everyone who has a horse with FWS is desperate for a...
Here’s a page from Mad Barn. Coconut Oil for Horses: Nutrition, Benefits & How to Feed [Review] | Mad Barn