Mom is 92, in NH and has probably mid or mid/late stage dementia. She was on aricept for 8 years living independently until emergency surgery caused a rapid decline into rehab and NH. A few fainting type episodes 6 months ago promped her DR to take her off the aricept (and BP meds) to try to stabilize the heart rate which now is fine. She is experiencing sundowners now and is going through what seem to be cycles of “normalcy” for a few days, then high anxiety and agitation (happy, not mean, but seems to be back at work in the office) for 24 hours then sleep/naps for a couple of days, then back to “normal” for a week or 2. At the advice of the nursing staff who are used to this type of behavior, we are putting her on a low dose 7.5 mg time release dose of Namenda. She has kidney issues that must be watched closely, but her lab work just came back and the Dr says as long as we watch the kidney tests closely, she’s healthier than I am. My question for those whose loved ones are on this drug, did it seem to help with the sun downing or dementia, and are there any side effects that I should watch for? DR says we can discontinue it if it seems to be having ill effects. How long should I give it for potential side effects to show? She just started on it yesterday. Thanks!