In this short-term study, the incidence of attacks was similar in both groups, and there have been no full cases of C. In summary, the results of these two phase 3 research showed that treatment with rifaximin at a dose of 550 mg three times daily for 14 days provides better comfort of symptoms of IBS than will placebo for up to 10 weeks after completion of therapy.. Tag Pimentel, M.D., Anthony Lembo, M.D., William D. Chey, M.D., Salam Zakko, M.D., Yehuda Ringel, M.D., Jing Yu, Ph.D., Shadreck M.It is also used prophylactically to prevent the development of overt intracranial metastases in individuals identified as having small-cell lung carcinoma. But there is a downside to the procedure. As the hippocampus and the limbic area are irradiated combined with the remaining brain, the procedure causes memory lapses, difficulty with executive planning, and poor fine motor control. The results could be devastating for patients, whose quality of life is deeply affected. Related StoriesNew scientific trial uses aggressive procedure for sufferers with pancreas cancerCharles Bonnet syndrome: an interview with Dr.