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Depot fluphenazine decanoate and enanthate for schizophrenia.
Cochrane Database Syst Rev. 2005 Jan 25CD

Abstract

BACKGROUND

Intramuscular injections (depot preparations) offer an advantage over oral medication for treating schizophrenia by reducing poor compliance. The benefits gained by long acting preparations, however, may be offset by a higher incidence of adverse effects.

OBJECTIVES

To investigate the clinical effects of fluphenazine decanoate and enanthate.

SEARCH STRATEGY

For this update we searched the Cochrane Schizophrenia Group's Register (May 2002).

SELECTION CRITERIA

We considered all relevant randomised clinical controlled trials focusing on people with schizophrenia comparing fluphenazine decanoate or enanthate with placebo or oral anti-psychotics or other depot preparations.

DATA COLLECTION AND ANALYSIS

We reliably selected, quality rated and data extracted studies. For dichotomous data we estimated relative risk (RR) with 95% confidence intervals (CI), and, where possible, the number needed to treat/harm (NNT/H). Analysis was by intention-to-treat. We used the weighted mean difference (WMD) for normal continuous data. Tests of heterogeneity and for publication bias were undertaken.

MAIN RESULTS

This review now includes 70 randomised studies. Compared with placebo, fluphenazine decanoate did not reduce relapse over 6 months to 1 year, but one longer term study found that relapse was significantly reduced in the fluphenazine arm (n=54, RR 0.35, CI 0.2 to 0.6, NNT 2 CI 2 to 4). Fluphenazine decanoate does not reduce relapse more than oral neuroleptics (n=419, 6 RCTs, RR relapse 26-52 weeks 1.46 CI 0.8 to 2.8) or other depot antipsychotics (n=581, 11 RCTs, RR relapse 26-52 weeks 0.82 CI 0.6 to 1.2). Relapse rates over 6 months to 1 year were not significantly different between standard dosage of fluphenazine decanoate over a low dose group (n=523, 4 RCTs, RR 2.09 CI 0.6 to 7.1). Movement disorders were significantly less for people receiving fluphenazine decanoate compared with oral neuroleptics (n=259, 3 RCTs, RR 0.47 CI 0.2 to 0.9, NNT 14 CI 10 to 82). For fluphenazine enanthate there were limited data but no clear difference in global change (0 to 5 weeks) when compared with oral neuroleptics (n=31, 1 RCTs, RR 0.67 CI 0.3 to 1.7), and in relapse rates over 6-26 weeks between fluphenazine enanthate and other depots. Compared with placebo, giving the enanthate caused no more people to need need anticholinergic drugs (n=25, 1 RCT, RR 9.69 CI 0.6 to 163.0) and movement disorders, tardive dyskinesia, tremor, blurred vision and dry mouth were equally prevalent when enanthate was compared with other depot neuroleptics.

AUTHORS' CONCLUSIONS

There are more data for fluphenazine decanoate than for the enanthate ester. Both are effective antipsychotic preparations. In the context of trials, there is little advantage of these depots over oral medications in terms of compliance but this is unlikely to be applicable to everyday clinical practice.

Authors+Show Affiliations

David A
Institute of Psychiatry and GKT School of Medicine, King's College School of Medicine and Dentistry, 103 Denmark Hill, London, UK, SE5 8AF. a.david@iop.kcl.ac.uk
Adams CE
No affiliation info available
Eisenbruch M
No affiliation info available
Quraishi S
No affiliation info available
Rathbone J
No affiliation info available

MeSH

Antipsychotic AgentsDelayed-Action PreparationsFluphenazineHumansRandomized Controlled Trials as TopicSchizophrenia

Pub Type(s)

Journal Article
Meta-Analysis
Review
Systematic Review

Language

eng

PubMed ID

15674872

Citation

David, A, et al. "Depot Fluphenazine Decanoate and Enanthate for Schizophrenia." The Cochrane Database of Systematic Reviews, 2005, p. CD000307.
David A, Adams CE, Eisenbruch M, et al. Depot fluphenazine decanoate and enanthate for schizophrenia. Cochrane Database Syst Rev. 2005.
David, A., Adams, C. E., Eisenbruch, M., Quraishi, S., & Rathbone, J. (2005). Depot fluphenazine decanoate and enanthate for schizophrenia. The Cochrane Database of Systematic Reviews, (1), CD000307.
David A, et al. Depot Fluphenazine Decanoate and Enanthate for Schizophrenia. Cochrane Database Syst Rev. 2005 Jan 25;(1)CD000307. PubMed PMID: 15674872.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Depot fluphenazine decanoate and enanthate for schizophrenia. AU - David,A, AU - Adams,C E, AU - Eisenbruch,M, AU - Quraishi,S, AU - Rathbone,J, Y1 - 2005/01/25/ PY - 2005/1/28/pubmed PY - 2005/5/28/medline PY - 2005/1/28/entrez SP - CD000307 EP - CD000307 JF - The Cochrane database of systematic reviews JO - Cochrane Database Syst Rev IS - 1 N2 - BACKGROUND: Intramuscular injections (depot preparations) offer an advantage over oral medication for treating schizophrenia by reducing poor compliance. The benefits gained by long acting preparations, however, may be offset by a higher incidence of adverse effects. OBJECTIVES: To investigate the clinical effects of fluphenazine decanoate and enanthate. SEARCH STRATEGY: For this update we searched the Cochrane Schizophrenia Group's Register (May 2002). SELECTION CRITERIA: We considered all relevant randomised clinical controlled trials focusing on people with schizophrenia comparing fluphenazine decanoate or enanthate with placebo or oral anti-psychotics or other depot preparations. DATA COLLECTION AND ANALYSIS: We reliably selected, quality rated and data extracted studies. For dichotomous data we estimated relative risk (RR) with 95% confidence intervals (CI), and, where possible, the number needed to treat/harm (NNT/H). Analysis was by intention-to-treat. We used the weighted mean difference (WMD) for normal continuous data. Tests of heterogeneity and for publication bias were undertaken. MAIN RESULTS: This review now includes 70 randomised studies. Compared with placebo, fluphenazine decanoate did not reduce relapse over 6 months to 1 year, but one longer term study found that relapse was significantly reduced in the fluphenazine arm (n=54, RR 0.35, CI 0.2 to 0.6, NNT 2 CI 2 to 4). Fluphenazine decanoate does not reduce relapse more than oral neuroleptics (n=419, 6 RCTs, RR relapse 26-52 weeks 1.46 CI 0.8 to 2.8) or other depot antipsychotics (n=581, 11 RCTs, RR relapse 26-52 weeks 0.82 CI 0.6 to 1.2). Relapse rates over 6 months to 1 year were not significantly different between standard dosage of fluphenazine decanoate over a low dose group (n=523, 4 RCTs, RR 2.09 CI 0.6 to 7.1). Movement disorders were significantly less for people receiving fluphenazine decanoate compared with oral neuroleptics (n=259, 3 RCTs, RR 0.47 CI 0.2 to 0.9, NNT 14 CI 10 to 82). For fluphenazine enanthate there were limited data but no clear difference in global change (0 to 5 weeks) when compared with oral neuroleptics (n=31, 1 RCTs, RR 0.67 CI 0.3 to 1.7), and in relapse rates over 6-26 weeks between fluphenazine enanthate and other depots. Compared with placebo, giving the enanthate caused no more people to need need anticholinergic drugs (n=25, 1 RCT, RR 9.69 CI 0.6 to 163.0) and movement disorders, tardive dyskinesia, tremor, blurred vision and dry mouth were equally prevalent when enanthate was compared with other depot neuroleptics. AUTHORS' CONCLUSIONS: There are more data for fluphenazine decanoate than for the enanthate ester. Both are effective antipsychotic preparations. In the context of trials, there is little advantage of these depots over oral medications in terms of compliance but this is unlikely to be applicable to everyday clinical practice. SN - 1469-493X UR - https://www.unboundmedicine.com/medline/citation/15674872/Depot_fluphenazine_decanoate_and_enanthate_for_schizophrenia_ DB - PRIME DP - Unbound Medicine ER -