In my case it's genetic. My mom & sister also have it. My grandmother has Parkinson's, so I'm extremely likely to also get it at some point. I've tried all recommended vitamins, supplements, etc. nothing really helped as much as Concerta.
You should get a full genome run on yourself and whoever else is affected and start investigating if you have polymorphisms in some of the genes responsible fro making dopamine or issues with antioxidant enzymes like GPX:
