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  • Title: Is clonidine useful for treatment of clozapine-induced sialorrhea?
    Author: Praharaj SK, Verma P, Roy D, Singh A.
    Journal: J Psychopharmacol; 2005 Jul; 19(4):426-8. PubMed ID: 15983000.
    Abstract:
    Clozapine has shown superior efficacy in treatment of refractory schizophrenia, but its use is limited by emergent side-effects. Among other adverse effects, sialorrhea is a troublesome side-effect, its stigmatizing nature results in poor treatment compliance. Several hypotheses have been put forward in the etiology of clozapine-induced sialorrhea. 2 adrenergic antagonism is hypothesized to be involved in its pathophysiology, based on the response to clonidine and lofexidine. Oral clonidine (50 to 100 g/day) was tried on 12 stable outpatients of schizophrenia maintained on clozapine. Wet area over the pillow as reported by the patients was recorded at baseline and at 4 weeks of treatment along with the subjective response after the treatment. Most of the patients reported a decrease in sialorrhea without any adverse events. We describe encouraging results in an open case series of oral clonidine for clozapine-induced sialorrhea.
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