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A Phase 2b, Randomized, Double-Blind, Placebo- Controlled, Multicenter Study to Assess the Safety, Efficacy and Pharmacokinetics of RNIB21 in the Treatment of Patients With Irritable Bowel Syndrome With Diarrhea (IBS-D)

The purpose of this study is to examine the effectiveness of using a combination of a drug, rifaximin and a dietary supplement, N-acetyl-L-cysteine (NAC), to t…