Primarily used in the treatment of moderate to severe Alzheimer's disease, it helps to slow the progression of symptoms such as memory loss and cognitive decline. It works by regulating glutamate activity in the brain, which is involved in learning and memory. Additionally, it is sometimes prescribed for other neurological conditions like Parkinson's disease and dementia-related symptoms. It is often administered orally in tablet or liquid form and is typically part of a broader treatment plan that may include other therapies.