Hey Grant. I've been on it for just over 3 years and it's fab. After about a year I noticed that the last week of the 8 week cycle was too tiring for me so I get it every 7 weeks now which makes a difference. I know someone who was on it for a few years, then he experimented with coming off for 4 months but sadly that didn't work so he went back on & it was just as successful. My consultant says that even when we are in remission, the condition is still working there in the background and the trough levels of Infliximab (Remicade / Remsima) gradually drop over the weeks so that explains any fatigue that may set in for some of us. It's a miracle med, worked straight away for me. Hope you continue to have good experiences with it : )