My 12 year old is ADHD co-morbid with juvenile bipolar disorder (a common comorbidity and I highly recommend the website www.bpkids.org if you think your child might be bp). He cannot take stimulants or wellbutrin because of the bipolar. Our pdoc mentioned a very few studies showing aricept, a medicine used for Alzheimer patients, is effective for ADHD. Has anyone heard of it or used it? Thanks.