ADHD women and the effects of menapause?

I have been in treatment for peri-menapause using natural hormones, vitamins and lifestyle changes while also experiencing a significant increase in my ADHD symptoms for the last 4 years.  Symptoms have included much more distractibility, memory loss and forgetfullness, trouble recalling names and mild depression.  Have been taking Concerta with vague results, and now trying a trial of Amantadine after reading "Delivered from Distraction". 

I've been told by three practitioners that ADHD and the hormonal changes that accompany menapause is uncharted territory ... was hoping Melissa might be able to suggest further reading on this subject?

Thanks, J