I've had another careful look at those links Bex. I could maybe manage the 25mg one, for 3 months.

Like I said though, I'm frightened. I don't know if the Detoxica, garlic, and some chlorella I bought this morning at a health food shop will do for me. Or if I added DMSA on top of this, if I'd be in danger of really hurting myself. There's so much guesswork here.