While my experience was not severe with my gelding with FFW I was able to turn it around pretty quickly. He has always had some issues with his gut (I adopted him at 5 weeks he was taken from his mom at 4 weeks and is a rescued nurse mare foal) I had started him on GUT twice a day to help regulate some of his GI issues. When the FFW started I had Absorb All on hand for my 29yr old gelding and I double dosed him for a week (full scoop twice a day) continuing the GUT twice a day and it cleared it up quickly. I had tried the Psyllium first with no luck but the Absorb All worked quickly at the double dose amount.