Diarrhoea, weight loss and abdominal distress are signs a horse has been eating sand. If your horse shows these signs consult your veterinary surgeon. Left untreated intestinal sand can lead to impaction Pysllium husk has been shown to help support the removal of sand from the intestine. Psyllium is a natural soluble fibre derived from the husks of a seed grain. It absorbs liquid in the intestines and swells to support the prevention and removal of compactions caused by ingested sand and foreign matter. Can be given to horses of all ages including young foals.