I live in the US in a no-marijuana state but only 5 minutes from a recreational-legal state. I usually go to my sister's house (in the legal state) at bedtime, grab an edible, then head home to sleep (it takes about an hour to kick in).
Without THC, I barely sleep at all. It takes 4-5 hours to fall asleep, and then I sleep for only a few hours before waking again. With THC, I sleep like a baby for 8 hours and wake up (without an alarm clock) feeling fine.
I can't do THC during the day because if I take a dose that's large enough to calm my PD symptoms, it makes me sleepy and VERY nauseous. When I take it at night, I can get up to go to the bathroom if I need to, but I have to go straight back to bed. If I try to walk around at all, I get dizzy and vomit.
I've noticed that my tremor, rigidity, bradykinesia and mild dystonia on my left side (mostly left arm/hand) are GONE during the night when I take an edible. I can move my left hand easily and fluidly--even better than when I take Sinemet. Of course, it doesn't do me any good as I can't get up and do anything lol.
I'm thinking about levodopa and FUS-PTT, and wondering where THC fits into the picture. I'm hoping that my state legalizes medical marijuana soon (we're working on it), so I'll be able to experiment with it a lot more.