There has been some downward change in short term memory and confusion about when and for how long we're going somewhere, but otherwise he functions very well. Drives, when I'm with him. He uses his iPhone, the computer and even day trades stocks. So, when his primary care physician prescribed Namenda I was surprised, as I thought it is for moderate to severe dementia. With the possible side effects, I'm not sure he should take it. What to do?