This is not really a question, more an attempt to answer it. I have noticed many different spellings being used, and I bought a book about Parkinson's which includes drug names.
The most commonly used drugs seem to be
Mirapexin also known as pramipexole
Requip also known as ropinerole
Symmetrel also known as amantadine
CR after the first two means controlled release
There are many other drugs that might be used, and it's confusing to read about them all, but the leaflets in the packs of tablets are helpful. One thing is clear, what suits one person may not suit another, as everyone reacts differently. Another thing that is clear is that none of them are going to cure Parkinson's, but we can kive in hope