My mom started Aricept at 5mg for 4 weeks which went fine. A couple of vivid dreams the first couple nights, but no other side effects. Going into week 5, she increased to 10mg as instructed. Again, a couple of vivid dreams the first couple days. Around days 4 and 6, she woke up with her heart "pounding into the mattress" Slightly faster than normal, but nothng to cause alarm. She has no heart disease. We cut her back to 5 mg, but she said she felt "more alert" with better communication skills. She wants to try 10mg again. Any other similar complaints? Resolution? Thanks