I am also on 4 tablets, 3 times a day, total of 12. I think that's 4800 mg right? My GI says anything over 12 isn't going to help any more. But i read several posts of people who are on 16 per day. Either way, 12 or 16 is probably max and if not managing symptoms anymore, is time to move onto another treatement.
That's basically where I am now. 3 years with NO flares after diagnosis & begin treatment...2 major flares in the last 2 years. I don't know if Asacol isn't working as well anymore, or if i'm just in a more active phase of the disease. I hate idea of moving onto Imuran or similar.
Frustrating disease - you don't know if you're declining or just in a bad phase. It's a guessing game.