ABSTRACT
Irritable bowel syndrome is one of the most common gastrointestinal disorders characterized by chronic abdominal pain, altered bowel habits or changes in stool consistency. Unfortunately, no specific treatments for relieving IBS symptoms have been suggested yet. This pilot study was conducted to evaluate the efficacy of the Cumin extract, a kind of herbal used in the treatment of gastrointestinal disorders like bloating, and other symptoms of IBS. Fifty seven patients with IBS [according to the ROME II diagnostic criteria] with no nay other accompanying illness enrolled in study. Patients were advised to discontinue their other treatments during the study course, then 20 drops per day of Cumin essential oil was administered for included patients. IBS-associated symptoms including abdominal pain, nausea, painful defection, presence of mucosa in stool, changes in stool consistency and defecation frequency were evaluated using a questionnaire before treatment, 2 and 4 weeks after beginning treatment and 2 and 4 weeks after stopping treatment. Abdominal pain, bloating, incomplete defecation, fecal urgency and presence of mucus discharge in stool were statistically significant decreased during and after treatment with Cumin extract. Stool consistency and defecation frequency were also both statistically significant improved in patients with constipation dominant pattern of IBS. Cumin extract can be effective in improving all IBS symptoms. Considering its low cost and easy availability Cumin administration in patients with IBS may have economic benefits