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Report of Collaborative Study Group on Treatment of Mania in Japan

Ryo Takahashi, MD; Akira Sakuma, PhD; Kozo Itoh, MD; Hitoshi Itoh, MD; Masanao Kurihara, MD; Masami Saito, MD; Masasuke Watanabe, MD

Arch Gen Psychiatry. 1975;32(10):1310-1318.

Abstract
• A multi-institutional cooperative study comparing lithium carbonate with chlorpromazine was conducted, using a controlled double-blind design in a series of 80 cases of endogenous manic psychosis, to evaluate the drugs' clinical utility and efficacy, characteristics of therapeutic effect, and side-effects. Dosages employed were consistently at an equipotent ratio of 4:1 (lithium carbonate:chlorpromazine).

Physicians' overall ratings showed lithium carbonate as significantly superior to chlorpromazine in efficacy for manic psychosis. Improvements of basic mood and of disturbance in speech and voice were prominent with lithium carbonate. Onset of the therapeutic effect of lithium carbonate was within ten days of medication in 65% of the patients, significantly faster than with chlorpromazine. Side-effects encountered with lithium carbonate therapy at dose levels not higher than 1,800 mg/day were milder and less frequent compared with those seen with chlorpromazine.

Author Affiliations
From the Departments of Neuropsychiatry, Nagasaki University School of Medicine (Dr Takahashi), Keio Gijuku University Faculty of Medicine (Dr H. Itoh), Kansai Medical College (Dr Saito), and Okayama University School of Medicine (Dr Watanabe); the Department of Psychiatry, Toranomon Hospital (Dr Kurihara); the Laboratory of Clinical Pharmacology, Medical Research Institute, Faculty of Medicine, Tokyo Medical and Dental University (Dr Sakuma); and Hanazono Hospital, Sapporo, Japan (Dr K. Itoh).

Footnotes
Accepted for publication April 24, 1975.

Reprint requests to the Department of Neuropsychiatry, Nagasaki University School of Medicine, 7-1 Sakamoto-machi, Nagasaki 852, Japan (Dr Takahashi).

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