RecruitingDietary supplementProbiotics in Adults With Rheumatoid ArthritisThe goal of this clinical study is to collect data on the effect of probiotic administration on clinical outcomes in rheumatoid arthritis patients. Participants will: * Have a 6-week daily administration of a probiotic * Collect fecal samples every other day during the first 3 weeks of the study and twice weekly over the last 3 weeks * Visit the clinic at Baseline, Week 3 and Week 6 for checkup and testing