Participants with active RA flair will be assigned to take on one of two Acthar doses, either 40 units per week or 80 units twice a week. Both arms will be taking the drug for 4 weeks. Each participant will be coming back for visits at 2 weeks, 1 month and 3 months after the initial baseline visit. During these visits the following information will be collected: MSUS of joints, DAS28, and Health Assessment Questionnaire-Disability Index (HAQ-DI). Participants will also be asked to fill out a questionnaire about their health status.
Efficacy of Acthar to decrease evidence of MSUS synovitis and disease activity measures will be analyzed using the above mentioned instruments, as well as Acthar's ability to prevent the necessity to change patients' RA treatment regimen.
