Hi. Thanks for your query. Noted the history related to your Mother suffering from nausea, loss of appetite, sleepiness and difficulty in walking.She has been started on Aricept 5 mg one week ago and you have read that it may take about 1 to 3 weeks for the body to get adjusted to medication. Wants to know details and whether she will begin to eat and become more alert... Aricept is used to treat mild to moderate dementia caused by Alzheimer s disease, that you have not mentioned. In dementia the treatment is totally need dependent. Hence overall problems have to have clinical evaluation, examination and investigations as per the clinical finding to decide the cause of the symptoms that your Mother is suffering. Other causes also needs to be found out like any intra-abdominal pathology by clinical evaluation and relevant findings.