We are are all right to look for and insist upon something better than Sinemet, but let's let Dad have a standard medicine that will help him and be acceptable to all involved. I suggest that standard medical practice (at the MDS level) is what will work in his situation.
Viola, it's possible that the right medications could make your dad more responsive, too. I see your job as an advocate for reason and better medical care for him.
If you and your dad would still like to experiment with mucuna, You will pick up a lot of background on mucuna here:
http://www.parkinson.org/NETCOMMUNIT...=459&srcid=461
a scientific study of it here:
http://www.pubmedcentral.nih.gov/pic...1&blobtype=pdf
and a discussion of Zandopa dosage here:
http://www.wemove.org/ubb/ultimatebb...pic/17/14.html
BTW, a thought just crossed my mind! "God helps those that helps themselves" is NOT in the Bible.
Jaye