Synopsis

Source of validity: Scientific
Rating (out of 5): 3

Galactomannan, a soluble dietary fiber extracted from guar beans (often referred to as guar gum), has been studied for its efficacy in treating constipation in children. The scientific basis for its use rests on its ability to increase stool bulk and water content, thereby facilitating bowel movements. Several randomized controlled trials (RCTs) have evaluated the effects of galactomannan-containing fiber supplements in pediatric populations with functional constipation. For example, a 2011 randomized, double-blind trial by Staiano et al. found that partially hydrolyzed guar gum improved stool frequency and consistency in children with constipation compared to placebo. Further studies, such as those summarized in systematic reviews (e.g., Tabbers et al., 2014, Cochrane Review), suggest that dietary fiber supplementation, including galactomannan, can be beneficial, although the magnitude of effect is moderate and not all studies show statistically significant improvements. Guidelines from pediatric gastroenterology societies generally recommend increasing dietary fiber intake as part of a comprehensive approach to managing constipation in children, and galactomannan is one of the fibers sometimes recommended. However, evidence is not uniformly robust, and fiber supplementation may not be effective in all cases—especially in children with very low fiber intake to begin with. In summary, there is moderate-quality scientific evidence supporting the use of galactomannan to relieve constipation in children, with clinical studies demonstrating benefit, but responses may vary and it should be considered as part of a broader treatment strategy.

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