Hi, welcome to the forum!
I'm pretty sure Colazal isn't new. Colazal is in the same "level" of drugs as Asacol, so it can be used as a replacement. I used Asacol and Lialda, and then switched to Colazal.
The generic form of Colazal is covered by my insurance ($20 co-pay), so you might want to look into that. I started Colazal while I was on Remicade, so I don't know if Colazal has helped or not. The only side effect was the fact that I had cramping if I took the maximum dose (9 capsules/day); when I switched to 6 capsules/day, I was fine.
Female, Age 19
9 Asacol, Rowasa, 1000 mg Canasa, Proctofoam, Rifaximin 2/day
Digestive Advantage (Crohn's & Colitis), 1 Florastor, 50 mg 6MP,1 Primadophilus reuteri, Remicade (3 infusions), 2.4 g Lialda, 1 Forvia, 6 Colazal/day, 1 Anucort