The American College of Gastroenterology evaluated a broad spectrum of medical research and conducted a rigorous review of the evidence regarding the effectiveness of testing and treatments for IBS. The results were graded by physician experts based on the quality of the scientific studies, including study design and findings and published in The American Journal of Gastroenterology in January 2009. The IBS Treatment Matrix provides an at-a-glance overview of all currently available IBS treatment options, plus evidence supporting the safety and efficacy of those options, enabling you and your physician to consider all the possible alternatives while formulating a treatment plan. Learn more.