president obama is finalizing his last state of the union address. the white house just released this preview ahead of the event. >> this is it. and never in our lives again will we have the chance to do as much good as we do right now. i want to make sure that we maximize it. caring for someone with alzheimer's means i am a lot of things. i am his guardian. i am his voice. so i asked about adding once-daily namenda xr to his current treatment for moderate to severe alzheimer's. it works differently. when added to another alzheimer's treatment, it may improve overall function and cognition. and may slow the worsening of symptoms for a while. vo: namenda xr doesn't change how the disease progresses. it shouldn't be taken by anyone allergic to memantine, or who's had a bad reaction to namenda xr or its ingredients. before starting treatment, tell their doctor if they have, or ever had, a seizure disorder, difficulty passing urine, liver, kidney or bladder problems, and about medications they're taking. certain medications, changes in diet, or medical conditions