Plum fruit, particularly in the form of dried plums or prunes, is supported by scientific evidence for its use in treating constipation in children. Plums and prunes are rich in dietary fiber (both soluble and insoluble), and they contain sorbitol, a naturally occurring sugar alcohol with well-established laxative properties. Several clinical studies, though more commonly performed in adults, have demonstrated that prunes are effective in increasing stool frequency and improving stool consistency.

For pediatric use, evidence is somewhat less extensive but still supportive. The American Academy of Pediatrics and various pediatric gastroenterology guidelines include prunes as a recommended dietary intervention for mild constipation in children. A 2014 randomized controlled trial in children aged 2–12 years found that prune juice was effective and well-tolerated for treating constipation, often compared favorably to other treatments such as psyllium. While high-fiber foods in general are recommended, prunes are specifically mentioned due to their combination of fiber and sorbitol.

Traditionally, plums have also been used in many cultures for digestive health, but the scientific validation for their use, particularly in dried form, is robust enough to recommend them as a first-line dietary management for mild to moderate constipation in children. However, overuse can lead to diarrhea, and dosing should be appropriate for the child’s age and weight.