Hi again Tracy,

I have Andy Cutlers book and he suggests you can ascertain this by examining urine samples etc.
Easy to do if you are under a doctor! He suggests generally to use DMSA for approx 2-6 months so I figure if you don't have the support of a doctor its about how you feel and a bit of guesswork?!
I'm going to give it the minimum 2 months and then get started.
Melanie.