The objective of this study is to evaluate the safety and efficacy of ID1201 in patients with mild Alzheimer's disease

ID1201 is a fruit extract of Melia toosendan. ID1201 alleviates Alzheimer's disease-type pathologies and cognitive deficit through the various actions of its effective components such as α-secretase activation followed to Aβ reduction, RAGE inhibition, neuro-protection, and anti-inflammatory activities.

Inclusion Criteria:

1. Patient diagnosed with dementia of Alzheimer's type according to DSM-IV criteria and probable Alzheimer's disease according to the NINCDS-ADRDA
2. modified Hachinski Ischemia Scale score of less than or equal to 4
3. Mini-Mental State Examination score 16 to 26 and Clinical Dementia Rating-Global Scale score 0.5 to 1
4. Amyloid postivie PET image (BAPL score 2 or 3)
5. Patients who have not received AChE inhibitors or NMDA antagonist at least for 3 months prior to the screening visit

Exclusion Criteria:

1. Patients diagnosed or accompanied with Dementia due to other Neurodegenerative disorders other than Alzheimer's disease
2. Chronic alcohol and/or drug abuse within the past 5 years
3. Subjects who have medical history of significant renal disease (ccr<30ml/min) or hepatic disease( 3*ULN <= ALT or AST)
4. Has received choline agonists, anticholinergics, anticonvulsants, antidepressants, antipsychotic drugs, Ginko biloba extract, Vitamin E, hormone replacement therapy etc. in the previous 4 weeks