Used to treat mild to moderate dementia caused by Alzheimer's disease or Parkinson's disease. It works by increasing the levels of certain chemicals in the brain that are involved in memory, thinking, and reasoning. Helps improve cognitive function, daily living activities, and behavioral symptoms in patients. Often prescribed to slow the progression of symptoms, though it does not cure the underlying disease. Administered orally or via transdermal patch for consistent delivery and reduced gastrointestinal side effects.