<prompt> Best for treatment of irritable bowel syndrome with spastic colon isLiquid paraffinSennaBisacodylDietary fibers  <response>: Ans. d Dietary fibers. Ref. KD Tripathi 5th ed. - 614Spastic constipationIrritable bowel1st choice laxative: Dietary fibers Bulk forming laxative such as Ispaghula, methylcellulose.While Stimulant purgatives like: Castor oil, Senna, Bisacodyl, Phenolphthalein... are contraindicated. 