Used primarily in the treatment of mild to moderate Alzheimer's disease, it functions as a reversible acetylcholinesterase inhibitor, helping to increase acetylcholine levels in the brain, which supports cognitive function and memory. It also acts as an allosteric modulator of nicotinic acetylcholine receptors, enhancing cholinergic transmission. Due to these dual mechanisms, it is prescribed to improve mental performance and slow disease progression in patients with Alzheimer's. Additionally, it has been explored for use in other neurological conditions such as vascular dementia and post-polio fatigue.