Lactitol (CAS No 585-86-4) is a sugar alcohol primarily used in the research category of carbohydrate metabolism and enzyme activity studies Originating as a hydrogenated form of lactose it functions by impacting osmosis and fermentation pathways in the gut It exhibits a mild laxative effect by altering water absorption in the colon leading to its frequent use in gastrointestinal research Common in vitro activity is observed within the nanomolar to low micromolar range indicating its high efficacy in relevant cellular pathways Typical applications include studies on cell models such as intestinal epithelial cells and animal models to investigate digestive processes and metabolic disorders Additionally lactitol is employed in drug screening to evaluate its effects on enzyme activity and nutrient absorption Experimental concentrations typically depend on the specific research design allowing for tailored exploration in diverse scientific inquiries