This study tries to determine if stopping certain medications that are used to treat dementia
will cause worsening from the patient and family perspective.
All of the participants will take pills that look identical, and that may contain active drug
or an inactive pill (a placebo). Half of the group will receive the same treatment they were
taking before the study -- this is called the "sham discontinuation" arm. The other half will
receive a reduced dose of their medication, and then an inactive pill (placebo) -- this is
called the "real discontinuation" arm.
Participants will be able to return to their previous dose of medication at any time during
the study. The percentage of people who return will be measured and compared. Other medical
events and factors such as behaviors, thinking, and caregiver distress, will be measured and
compared between the groups.