I used Infliximab for quite a while, and it was just as effective for me. I just started on the newest one, Renflixis (first dose three weeks ago), and have recently started to see a return of my RA symptoms. However, I don't know if that's due to the Renflixis or the fact that my doctor cut my Aza dose in half because I'd lost 40 pounds over the past year. I'm going to ask my doctor if I can return to the full dose of Aza to determine if it's the Renflixis that caused the change.