Blue dahlia and dilmar I too lost a huge amt of wt on agonist.
Greg, I wish it'd caused sleepiness in me!
Instead at my most manic phase on it I went 4 nights without sleep busily writing poetry which I believed due to agonists unfortunate side effects was absolutely brilliant poetry btw!
I did heaps of silly things on it and my thought process reverted to boring old insecure me when agonist was stopped.
Bubbleshar, be conscious of the mind altering effects that agonists may cause in your Father.
You seem like a very astute caregiver and perhaps it will help improve his PD symptoms, anyway these are just some of our experiences and under your watchful eye he may react well to it's introduction but if he starts to suddenly doing things which are out of character that could be why.
Best wishes.