I am not on any meds and never have been.
I am not officially dx'd with PD.
That said ... I watch, listen to and skim DOZENS of health videos weekly.
(Only leads to a LOT of confusion when doctors can't even agree if "meat" or "grain" is OK to eat!)
But while listening to this very good video, somewhere in the 'middle' (sorry I can't be more precise) -- this 2021 video doctor mentions a "new drug" (sorry again, I can't remember because I listen to these while in bed) ... that helps to stop the drug fluctuations.
I hope you find this helpful.
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