When initially diagnosed, we start our medications from dopamine agonists, anticholinergics, and other anti-Parkinson's medicines and then off course the levodopa. The neurologists and movement disorder specialists mere add a new medicine to patient daily regime upon complaints of new symptoms. They know ZERO about what's going on in the brain and body. They have just memorized the names of the medicines and even don't know about the mechanism of action of these medicines. In this scenario patients are more knowledgeable than the doctors. In my opinion PWP should only take levodopa and refuse to add extra medicines to the daily routine. Adding on new medicines to one's regimen is just like sinking slowly in the quagmire.
Supreme Court Justice Oliver Wendel Holmes had rightly said:
“If we doctors threw all our medicines into the sea, it would be that much better for our patients and that much worse for the fishes.”