Aricept and loss of appetite

After a year and 8 months on 10 mg. of Aricept for AD, my mother's loss of appetite became so severe she almost refused to eat and experienced frequent gastrointestinal upsets. After stopping Aricept about 2 months ago, her appetite improves and the upsets are less frequent, however, in the last two months her memory seems to be declining rapidly and she wandered away from home in the night.

Vivid Nightmares, I wake crying and shaking I haven't slept a nights sleep since I started taking it. Loss of appetite, weight loss of course, nerves are shot and of course I am agitated all the time. My nightmares are all bad and gruesome. I am a very serene and content person and this is affecting me in a very hurting and unhealthy way for me I also just came home from the hospital from having astete put in my left artery of my heart and these nightmares are lacking my needed sleep. Is there any other Meds for Alzheimer's?