Hi, thanks for using HCM. passing stool after each meal is normal, which is due to gastro colic relex. need not worry for this. If your bowel habits has changed after taking diet suppliments, then possible causes, as food intolerance ( soy protein , milk, other food allergy ) or oily food; absorptive disorders ( glucose-galactose malabsorption ); malabsorption syndrome; systemic diseases involving small and large intestine; I would recommend you monitoring properly your food and find out if is correlated with some items, then you need stool analysis and cultures to rule out infection , infestation; abdominal ultrasonography; colonoscopy. You may try now oral rehydration salts and probiotics until cause will be determined. Hope this helps you. regards