What are the main classes of laxatives?
Stimulant (Senna) Bulk forming (isphaghula) Osmotic (lactulose) Softners Enemas
How do stimulant laxatives work?
Increasing intestinal motility
How do bulk forming laxatives work?
Hold water in the stool increasing weight and making the stool easier to pass
How do osmotic laxatives work?
Promote the secretion of water in the lumen of the bowel
How do softener laxatives work?
Surfactants that ease interaction between water and the stools
How do enema laxatives work?
Used in impaction