Fiber Supplementation in Irritable Bowel Syndrome: A Systematic Review and Meta-Analysis of Randomized Controlled Trials https://pubmed.ncbi.nlm.nih.gov/42600900/ Fiber supplementation, and psyllium specifically, significantly alleviate the symptoms of irritable bowel syndrome (IBS). Daily intake of acacia powder (acacia fiber) can alleviate symptoms of irritable bowel syndrome (IBS)