Parkinson's Disease Support Group
Parkinson's disease is a movement disorder often characterized by muscle rigidity, tremor, a slowing of physical movement, and in extreme cases, a loss of physical movement. The primary symptoms of Parkinsons are due to excessive muscle contraction, normally caused by the insufficient formation and action of dopamine, which is produced in the dopaminergic neurons of the...
http://www.parkinson.org/Parkinson-s-Disease/Treatment/Medications-for-Motor-Symptoms-of-PD/Anticholinergic-Drugs
You can order a a free booklet on medications from the above site. Go to the top of the page and click on the publications site. Everyone should have a copy of the medications booklet cause it explains most of the drugs used for Parkinson's symptoms in an easy to understand way. Take it with you when you go to see your doctors so you can use it when the doctor suggests medicines for you.