Diarsanyl for Large Dogs, Foals and Calves promotes the growth of healthy bacteria in the gut to help treat and prevent diarrhoea and upset stomachs. Diarsanyl for Large Dogs, Foals and Calves promotes the growth of healthy bacteria in the gut to help treat and prevent diarrhoea and upset stomachs. It contains Montmorillonite, Prebiotics and Dextrose which work together to coat and protect the intestine, absorb toxins, maintain ordinary intestinal balance, and provide an essential energy source for the intestine. Diarsanyl for Large Dogs, Foals and Calves can be administered directly from the syringe or can be mixed in food. For best results, administer 2 times a days for 3-5 days or as advised by your veterinarian....