Examples include ispaghula husk and methylcellulose. Bulk-forming laxatives: These help bulk up the stool, easing its passage through the digestive system.Examples include arachis oil and docusate. Stool softeners: Also known as surfactant laxatives, these increase the water content of stool, making it softer and easier to pass.Osmotic laxatives usually work within 48–72 hours. Osmotic laxatives: These draw water from the rest of the body into the bowels, softening stool and making it easier to pass.The United Kingdom’s National Health Service (NHS) notes that there are four main types of laxatives. Both help promote or ease bowel movements. There are two main types of medication for treating constipation in children: laxatives and enemas. Share on Pinterest Peter Cade/Getty ImagesĪccording to the American Academy of Pediatrics (AAP), constipation is a common problem in children, accounting for approximately 1 in 20 pediatric visits.