Natren Equi-Flora For Horses 20 Ml (Ships Cold) Potency guaranteed through Exp. May be use on horses with IBS, gastrointestinal issues associated with training, traveling or age. Natural ingredients with no chemical fillers. May be used for horses with loose stools, diarrhea, nutrient absorption problems. May be used following antibiotic, deworming therapy. Simple, accurate dosing. Backed by over 30 yrs of probiotic expertise by Natren.