Rivastigmine is a parasympathomimetic or cholinergic agent used for treatment of dementia related to Alzheimer's, as well as dementia that is a result of Parkinson's disease. Dementia is a brain disorder that affects the ability to remember, communicate, think clearly, and perform daily activities. It may result in changes in mood and personality to those people suffering from Alzheimer's disease. Rivastigmine works by increasing the amount of a certain substance known as acetylcholine found in the brain. This substance helps reduce symptoms of dementia in patients suffering from Alzheimer's disease. This drug can be administered orally or through a transdermal patch.