I have spoken before about paying close attention to new medicines prescribed, to take along with your regular regimen of Parkinson's tablets. It's a very delicate balancing act finding the right medications, dosage, best intervals between meds and times of day to take them, as anyone suffering Parkinson's will well know.
Please pay attention, for a doctor can easily prescribe a pill, patch or even a harmless sounding cream to treat some additional health issue you may have, forgetting to take into account the effect this new addition will have in relation to your Parkinson's medications. Since taking, what I thought was a harmless travel pill a few years ago, where I almost passed out, felt seriously ill for several hours afterwards, do I now realise the importance of reading thoroughly the paper inside the box of any medicine. It was printed quite clearly that this pill should not be taken if one is on medications for Parkinson's.