Crocus sativus (saffron) adjunct to risperidone for negative symptoms of schizophrenia: a randomized, double-blind, placebo-controlled trial.

IF 2.1 3区 医学 Q3 PHARMACOLOGY & PHARMACY
Siamand Mazhar, Ahmad Shamabadi, Kimia Kazemzadeh, Mohammad Aidin Farahvash, Atiye Heidari Dalfard, Bita Fallahpour, Mohammad-Reza Khodaei Ardakani, Shahin Akhondzadeh
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引用次数: 0

Abstract

Current treatments for schizophrenia encounter resistance, limited efficacy, and limiting complications, necessitating novel approaches. The effects of saffron on negative symptoms were investigated as it has shown neuroprotective and antipsychotic properties. Fifty-six clinically stable chronic schizophrenic outpatients were equally assigned to saffron 15 mg q12hr or placebo groups while continuing risperidone. The Positive and Negative Syndrome Scale (PANSS) was used to assess schizophrenia-related symptoms in weeks 4 and 8. Also, the patients were assessed for the Hamilton depression rating scale (HDRS) and adverse effects. The baseline characteristics of the groups were comparable (Ps > 0.05). There were significant time-treatment interaction effects on negative ( = 0.137), general psychopathology ( = 0.193), and total ( = 0.113) PANSS scores. Affirmatively, their reductions were significantly greater in the saffron group until weeks 4 (Cohen's ds = 0.922, 0.898, and 0.759, respectively) and 8 (Cohen's ds = 0.850, 1.047, and 0.705, respectively). Regarding the negative symptoms, a better 25% response rate was obtained in the saffron group until the endpoint (P = 0.003). The HDRS scores, extrapyramidal symptom rating scale scores, and side effect frequencies were comparable between the groups (Ps > 0.05). Saffron was beneficial for primary negative symptoms of chronic schizophrenia in a safe and tolerable manner. It also outperformed placebo in improving general psychopathology and total symptoms.

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来源期刊
CiteScore
4.40
自引率
23.10%
发文量
97
审稿时长
>12 weeks
期刊介绍: International Clinical Psychopharmacology provides an essential link between research and clinical practice throughout psychopharmacology. It reports on studies in human subjects, both healthy volunteers and patients, which relate the effects of drugs on psychological processes. A major objective of the journal is to publish fully refereed papers which throw light on the ways in which the study of psychotropic drugs can increase our understanding of psychopharmacology. To this end the journal publishes results of early Phase I and II studies, as well as those of controlled clinical trials of psychotropic drugs in Phase II and IV. Other topics covered include the epidemiology of psychotropic drug prescribing and drug taking, the sociology of psychotropic drugs including compliance, and research into the safety and adverse effects of these compounds.
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