Thanks to everyone for the posts. I've gradually been feeling better throughout the day so it looks like I'll survive, but from now on I will regard a late chelation dose as A Serious Thing. I take it that the redistribution this causes, followed by a late dose, is worse than the inevitable end-of-round redistribution?

It's interesting how symptoms come and go. I've had a foggy brain for weeks now and it's making it difficult to do this Friday course I've started. I need to remember things I've read and heard and they seem to go through me like a sieve sometimes. But my diet, with which I'm still struggling, is probably part of that. I can tell you this: visits to gourmet chocolate shops are a BAD idea for recovering chocoholics.