The active ingredient in OsmoLax is called Macrogol 3350, the ‘gold standard’ for the treatment of constipation, especially in children. In fact, macrogol containing laxatives are the most prescribed type of laxative by Australian doctors. OsmoLax restores the body’s natural rhythm. It is virtually unabsorbed, so it remains in the bowel and directs water into the stool. This lubricates and softens, as well as bulks the stool which stimulates the urge to go to the toilet. The result is a natural and comfortable bowel movement.