Objective: To evaluate the efficacy and safety of Dinggui Oil Capsule in treating irritable bowel syndrome (IBS) with stagnation of qi and cold.
Methods: A prospective, randomized, placebo-controlled, double-blind clinical study was undertaken. One hundred and ninety-eight patients with IBS and syndrome of stagnation of qi and cold were randomly divided into high-dose Dinggui Oil group (DGO-H, 1.