This is a disease of the nervous system that mainly affects body movement. People with Parkinson's disease often walk with a shuffle as they have difficulty in initiating movement. If untreated, Parkinson's disease can cause difficulty in performing normal daily activities. It is also frequently helpful in treating shaking, difficulty in swallowing and drooling. The symptoms of Parkinson's disease are caused by a lack of dopamine, a naturally occurring chemical produced by certain brain cells.
Dopamine relays messages in the part of the brain that controls muscle movement.
When too little dopamine is produced slowness of movement results. Levodopa is a chemical closely related to dopamine which allows the body to make its own dopamine. Carbidopa makes sure that enough levodopa gets to the brain where it is needed. This keeps the amount of levodopa in your brain as even as possible. If you take this medicine after the expiry date has passed, it may not work.