Hello, jaykay -- and a late "welcome" !
I am just another pwp who is ignorant of VP, I'm afraid. I tried to research it, too, and found about as little info as you did. One source did say that levodopa can be effective in some cases; another suggested taking an aspirin per day if your doctor approves (an anti-stroke technique). Go home and take an aspirin? That's almost adding insult to injury, I think.
So I'm sorry none of us has been able to offer anything but sympathy so far. Maybe someone more knowledgeable will post later. Best wishes to you -- J