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Geriatr Gerontol Int ; 17(2): 211-218, 2017 Feb.
Article in English | MEDLINE | ID: mdl-26711658

ABSTRACT

AIM: Yokukansan (YKS), a traditional herbal medicine, has been used to treat behavioral and psychological symptoms of dementia (BPSD). The present study is the first double-blind, randomized, placebo-controlled trial to determine the efficacy and safety of YKS for the treatment of BPSD in Alzheimer's disease (AD). METHODS: A total of 22 sites consisting of clinics, hospitals and nursing homes participated. A total of 145 patients with AD were randomized. Active YKS (7.5 g/day) and placebo were supplied to 75 and 70 participants, respectively. The primary outcome measure was the 4-week change in total score of the Neuropsychiatric Inventory Brief Questionnaire Form (NPI-Q), an instrument that evaluates BPSD. Secondary outcome measures included 12-week changes in NPI-Q scores, changes in NPI-Q subcategory scores and total scores of the Mini-Mental-State Examination. RESULTS: Four-week changes in NPI-Q total scores did not differ significantly between the treatment and placebo groups. There were also no significant differences between groups in 12-week changes in total NPI-Q scores, NPI-Q subcategory scores or total Mini-Mental-State Examination scores. However, a subgroup with fewer than 20 points on the Mini-Mental-State Examination at baseline showed a greater decrease in "agitation/aggression" score in the YKS group than in the placebo group (P = 0.007). No serious adverse effects were observed during the study. CONCLUSIONS: Our data did not reach statistical significance regarding the efficacy of YKS against BPSD; however, YKS improves some symptoms including "agitation/aggression" and "hallucinations" with low frequencies of adverse events. Geriatr Gerontol Int 2017; 17: 211-218.


Subject(s)
Alzheimer Disease/psychology , Behavioral Symptoms/drug therapy , Drugs, Chinese Herbal/therapeutic use , Mental Disorders/drug therapy , Phytotherapy , Aged , Aged, 80 and over , Behavioral Symptoms/etiology , Double-Blind Method , Female , Humans , Male , Mental Disorders/etiology , Neuropsychological Tests
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