My Grandma experienced severe stomach pain and vomiting with Aricept. After speaking to her Dr. we discontinued the medication.
We also tried Aricept with Mom and her side effects were increased agression, insomnia and her confussion became much worse. After speaking with her Dr. the Aricept was stopped. I wish they would have responded better to this medication as I've heard others have but they did not.
Good luck to you and your patient.