Shirley, the issue in the green drinks is the antioxidants in the greens - and particularly because juice is so concentrated. MMS works as an oxidizer, antioxidants may weaken MMS, making it less useful.
You should probably stay away from citrus fruits and juices - this is actually MORE than Jim Humble would say, but I'm thinking of Kerri Rivera and her autism kiddos, and this is what she says - because she feels we really don't know HOW LONG it takes to get the Vitamin C (which will killl MMS) out of the blood. IMHO this is probably critical in your case, because you are so sick. I think you can eat other veges and greens with vitamin C in them - just not in the concentrated juiced or supplemented form.