“Effect of a Multispecies Probiotic Supplement on Quality of Life and Symptoms in Patients with Irritable Bowel Syndrome: A Randomized Double-Blind Placebo-Controlled Trial” – Pubmed Article (Error Code: 504) I included a brief description of the article and the error code to provide additional context for the title. If you specifically want just the title without any additional information, you can use: “Effect of Multispecies Probiotic Supplement on Quality of Life and Symptoms in Patients with Irritable Bowel Syndrome” – Pubmed Article (Error Code: 504)