Probios Powder is a probiotic supplement for horses and dogs that contains guaranteed levels of Lactobacillus plantarum, Enterococcus faecium, Lactobacillus casei, and Lactobacillus acidophilus. Probios is the world's most widely recognized, researched, and used brand of DFM (direct-fed microbial). When fed with a balanced diet, Probios Powder may aid in supporting a healthy gut during deworming, travel, antibiotic therapy, and showing.