A Study to Evaluate the Long-term Efficacy and Safety of KarXT + KarX-EC for Agitation in Alzheimer's Disease (ADAGIO-3)

Inclusion Criteria: * Participants must have completed study CN012-0023 or CN012-0024 per protocol. * Participants must have an identified caregiver who has sufficient contact (approximately 8 hours over a week). Exclusion Criteria: * Participants must not have clinically significant cardiovascular (eg, untreated or unstable hypertension, clinically significant tachycardia), pulmonary, renal, hematologic, GI, endocrine, immunologic, dermatologic, neurologic, or oncologic disease or any other condition that, in the opinion of the investigator, would jeopardize the safety of the participant or the validity of the study results. * Other protocol-defined Inclusion/Exclusion criteria apply.