I have done extensive research on this subject, and I am having some success with 5 mg dose at bedtime and 2.5 mg at 3:30 in the afternoon. Sundowning has stopped after 4 days dosing and has not occurred for 13 consecutive days. Too soon to tell if this is actually having an effect. Charting mood, anxiety demonstrations and very little confusion to this point. Memory is not improved, however but that was not expected. Please let me know if anyone has had any experience with this therapy.