Nature&rsquo;s Farmacy Equine DFM Horse Supplement, 10-Pound Contains Amylase, Protease, Phytase, Cellulose, Hemicellulose, Lipase and other digestive enzymes Poor digesters, colic candidates, older or stressed horses, stallions at stud, pregnant mare, foals & rescue horses all do well on this supplement No.10 pail would last the average horse 160 days