which Iams did you feed? Fish? Carrageenan? Menadione? Wheat Gluten? Try some Nutro natural choice see if it still happens? Stick to chunky chicken or turkey loaf. See if it continues.
One other kind of Nutro Natural Choice to try might be minced chicken: it's also carrageenan-free, fish-free, and grain-free. Our cats love Nutro Natural Choice, especially the chunky chicken. I'd probably try re-introducing wet food very slowly!Between both brands they had all those ingredients so it is really hard to say what it is that is making them sick . I am going to stay away from those brands or anything like it .. They are eating just the Evo kibble now and no problems .. I will try they Nutro Natural Choice though . It will have to be chicken though , they do not like turkey ..
Good luck!