I have found a great pain relief. It is cbd which comes from marijuana or industrial hemp. If you get the extract from hemp there is no the so you don't have to worry about tests. I take half a dropper twice a day under the tongue.
I get mine from Sootheen.com.
From the same site I get cream with cbd which does wonders for my neuropathy. Hope this helps. People always think that Parkinson's just makes you shake and walk slow. I wish! I fell twice in the last week, once against a concrete fireplace. So there's those extra pain things!!! The other thing about cbd is it doesn't seem to have any side effects.