work to increase the movement of feces along the colon . [ 1 ] Some laxatives combine more than one active ingredient. Laxatives may be oral or in suppository form. Contents 1 Foods 2 Bulk-producing agents 3 Stool softeners 4 Lubricants or emollient 5 Hydrating agents (osmotics) 5.1 Saline 5.2 Hyperosmotic