Probiotics as a cure for ADHD?
I'm sorry, but no. I can't jump on that bandwagon.
I have never seen anything that says ADHD can be cured, period. You may develop coping skills or you brain chemistry may regulate itself a little better as you get older, but there is no cure. That's not how it works.
Now, something like probiotics may help with symptoms that can be part of ADHD such as irritability. But a cure? No.