Parsons Technologies' "Medical Drug Reference for Windows."
This is a drug reference on CD-ROM, with information
on more than 6000 drugs. It has listings for Amantadine,
Sinemet and
Eldeperyl. I paid $44 (includes update later in year); company
address is
One Parsons Drive, P.O. Box 100, Hiawatha, Iowa 52233-0100
 
Requires 2 MB RAM, 10K hard drive space, Windows 3.1, CD-ROM
drive
(There are other drug references available on CD-ROM, too)
 
I hope this is useful.
                        -Bill Levinson