Safety and Efficacy of EXV-802 and EXV-801 in the Treatment of Agitation in Alzheimer's Disease Dementia

Inclusion criteria: 1. The participant is an adult male or female between the ages of 55 to 90 years inclusively, who can move around by themselves, with a walker or a wheelchair. 2. A previously established diagnosis of AD dementia. 3. The participant has clinically significant, moderate/severe agitation at the time of screening and for at least 2 weeks prior to randomization 4. The diagnosis of agitation must meet the International Psychogeriatric Association (IPA) provisional definition of agitation. 5. Caregiver who is able and willing to comply with all required study procedures and who is in contact with the participant at least on four individual days for at least two hours per day. Exclusion criteria: 1. The participant has a confirmed primary diagnosis of a dementia-related disease other than AD dementia. 2. The participant has symptoms of agitation that are not secondary to AD dementia 3. The participant has a history of uncontrolled seizures or a history of epilepsy. 4. The participant has a major medical illness or unstable medical condition