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Biotech / Medical : ACADIA Pharmaceuticals Inc (ACAD)
ACAD 21.66-2.9%3:59 PM EST

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To: tuck who wrote (419)6/4/2008 12:54:46 PM
From: tuck   of 588
 
[Clozapine: more than 900 mg/day may be needed]

>>J Psychopharmacol. 2008 May 30. [Epub ahead of print]

Clozapine: more than 900 mg/day may be needed.

Maccall C, Billcliff N, Igbrude W, Natynczuk S, Spencer EP, Flanagan RJ.

The State Hospital, Carstairs, Lanark ML11 8RP, UK.

Abstract Patients may fail to respond to clozapine treatment despite use of the maximum licensed UK dosage (900 mg/day) because of ultra-rapid metabolism of the drug. We present the findings of a study of a national clozapine/norclozapine assay service for the period 1997-2005 and three individual case studies of patients treated with clozapine in doses greater than 900ï¿(1/2)mg/day. Clinicians should be alert to the possibility of treatment failure because of rapid clozapine clearance secondary to genetic factors and heavy cigarette consumption. This may necessitate the use of clozapine in doses up to 1400 mg/day, notably in young male smokers. Doses of greater than 900 mg/day are rarely justified in women. Anyone given relatively high-dose clozapine (600 mg/day or more) should be monitored regularly for adverse events and changes in smoking habit.<<

Cheers, Tuck
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