Table 1.

List of Study Inclusion and Exclusion Criteria

	Inclusion criteria	Exclusion criteria
Age (year old)	50 ≤ 85	< 50 or 85 <
K-MMSE score	≥ 23	< 23
Liver function test (AST, ALT, or bilirubin levels)	< three times the upper limit of the normal range	≥ three times the upper limit of the normal range
Renal function (serum creatinine level)	≤ 2.0 mg/dl	˃ 2.0 mg/dl
Cognitive function	Subjective memory complain	Dementia
Participation another clinical trial	> one month	≤ one month
Taking medications, food affecting cognition	> 4 weeks	≤ 4 weeks
Allergic to ginseng	None	Yes
Other medical conditions		GI absorption dysfunction Major mental illness Addiction Pregnancy (planning breast feeding)

AST (aspartate aminotransferase); ALT (alanine transaminase); GI (Gastrointestinal).