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Extrapyramidal symptoms are a reason why subjects drop out of clinical trials of antipsychotics; of the 213 (14.6%) subjects that dropped out of one of the largest clinical trials of antipsychotics (the CATIE trial [Clinical Antipsychotic Trials for Intervention Effectiveness], which included 1460 randomized subjects), 58 (27.2%) of those ...
Aside from reduced extrapyramidal symptoms, and with the clear exception of clozapine, it is unclear whether the atypical (second-generation) antipsychotics offer advantages over older, first generation antipsychotics. [3] [27] [91] Amisulpride, olanzapine, risperidone and clozapine may be more effective but are associated with greater side ...
People on typical antipsychotics tend to have a higher rate of extrapyramidal side effects while some atypicals are associated with considerable weight gain, diabetes, and risk of metabolic syndrome; this is most pronounced with olanzapine, while risperidone and quetiapine are also associated with weight gain. [9]
Common adverse effects of olanzapine, occurring from 1–10%, include: Gynecomastia [8]; Extrapyramidal symptoms (EPS) (dose-dependent). Tends to produce less extrapyramidal side effects than typical antipsychotics but more extrapyramidal side effects than sertindole, clozapine and quetiapine.
The atypical antipsychotics (AAP), also known as second generation antipsychotics (SGAs) and serotonin–dopamine antagonists (SDAs), [1] [2] are a group of antipsychotic drugs (antipsychotic drugs in general are also known as tranquilizers and neuroleptics, although the latter is usually reserved for the typical antipsychotics) largely introduced after the 1970s and used to treat psychiatric ...
[15] [1] These drugs have fewer extrapyramidal side effects and are less likely to affect prolactin levels when compared to typical antipsychotics. [11] Amisulpride binds D 2 and D 3 [2] and is used as an antipsychotic, antidepressant and also treats bipolar disorder. [1] It treats both the positive and negative symptoms of schizophrenia. [13]
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Rabbit syndrome is a rare [1] form of extrapyramidal side effect of antipsychotic drugs in which perioral tremors occur at a rate of approximately 5 Hz. Rabbit syndrome is characterized by involuntary, fine, rhythmic motions of the mouth along a vertical plane, without involvement of the tongue, [2] [3] and resembling the chewing movements of a rabbit. [4]