Donepezil is used to improve mental function in cases of memory decline such as Alzheimer's disease. It works to increase the concentration of acetylcholine in the brain, which helps improve concentration and attention. It is used regularly under the supervision of a doctor and its effect appears gradually with continued use. It does not treat the underlying cause of the disease, but it slows the deterioration of the condition and enhances the ability to interact daily. It does not cause drowsiness and is usually taken in the evening to reduce stomach upset that may accompany its use. It is important to adhere to the dose and not stop taking it suddenly to avoid a deterioration of the condition.
Donepezil helps the patient maintain a degree of independence and improves quality of life in the early and middle stages of mental decline.