Mechanism of action as a laxative<unk>  is an osmotically acting laxative; that is, an inert substance that passes through the gut without being absorbed into the body. It relieves constipation because it causes water to be retained in the bowel instead of being absorbed into the body. This increases the water content and volume of the stools in the bowel, making them softer and easier to pass, as well as improving gut motility.
Macrogol
Medrogestone
Diatrizoate
Icodextrin
Corn starch
Ellagic acid
Methyl cellulose
Phospho soda