Switching to amisulpride
Peuskens J.
The Catholic University of Leuven,
University Centre St. Jozef,
Kortenberg, Belgium.
Curr Med Res Opin 2002;18 Suppl 3:s23-8


The introduction of atypical antipsychotics represents an important advance in the treatment of schizophrenia. As their therapeutic efficacy, tolerability and safety profiles are clearly superior to classical neuroleptics, atypical antipsychotic agents are considered to be the treatment of choice in first episode patients. In addition, an increasing number of patients are being switched from classical to atypical antipsychotic agents. Switching is especially relevant in patients with a poor therapeutic response to classical neuroleptics and persistent symptoms (positive symptoms, negative symptoms, depressive syndromes, cognitive deficit); in patients with a psychotic relapse despite compliance; in patients with important side-effects (not only acute and tardive extrapyramidal symptoms [EPS] and general side-effects, but also dysphoria or neuroleptic-induced deficit syndrome [NIDS]); and in patients who are non-compliant due to side-effects. Switching to atypical antipsychotics should be performed with extreme care in stabilised patients; or in patients who present a danger to themselves or others at relapse; or in patients who are on depot neuroleptics who were non-compliant to previous oral treatment. Switching requires careful planning to reduce the risk of withdrawal effects (neuroleptic withdrawal syndrome, cholinergic rebound, exacerbation of symptoms or relapse, rebound of parkinsonism, dystonia, akathisia, dyskinesia), which may mask the beneficial effects and lead to early discontinuation of the new treatment. Patients, family and carers should be actively involved at all stages, and educated about the possible benefits and problems associated with switching therapy. Cross-tapering old and new treatment is the preferred method for switching and this involves tapering off the previous antipsychotic agent and any adjunctive treatment (sedatives, anticholinergic medication), while gradually titrating the new atypical antipsychotic agent to the established therapeutic dose. Switching patients to amisulpride treatment offers effective antipsychotic therapy, with a positive effect on negative and depressive symptoms. Amisulpride treatment also results in improved quality of life and social functioning in addition to fewer relapses and days of hospitalisation during long-term follow-up.

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