 And that was just never her. So we asked her doctor what else we could do. Rixulti is the only FDA-approved medication proven to reduce agitation symptoms that may happen with dementia due to Alzheimer's disease. Rixulti can cause serious side effects. Elderly dementia patients have increased risk of death or stroke, report fever, stiff muscles, and confusion, which can be life-threatening, or uncontrolled muscle movements, which may be permanent, high blood sugar, which can lead to coma or death, weight gain, increased cholesterol, low white blood cells,