Robert - Thank you for your post. I was kind of wondering about all that and your posted answered it. I will try the kinds that you recommended. It does seem like an inexpensive and safe treatment option. I am glad to hear it is working for you for your Parkinson's.

You mention not to get ones with other active ingredients and I was just wondering why that is? The reason I ask is that I have seasonal allergies and it would be great to get a 2 for 1, so to speak, medicine - a neuroprotective and an antihistamine. Do the other ingredients reduce the neuroprotective effect?