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Profile of paliperidone palmitate once-monthly long-acting injectable in the management of schizophrenia: long-term safety, efficacy, and patient acceptability – a review


Authors González-Rodríguez A, Catalán R, Penadés R, Garcia-Rizo C, Bioque M, Parellada E, Bernardo M

Received 19 February 2015

Accepted for publication 8 April 2015

Published 27 May 2015 Volume 2015:9 Pages 695—706

DOI https://doi.org/10.2147/PPA.S63948

Checked for plagiarism Yes

Review by Single-blind

Peer reviewer comments 4

Editor who approved publication: Dr Johnny Chen

Alexandre González-Rodríguez,1 Rosa Catalán,1–4 Rafael Penadés,1–4 Clemente Garcia-Rizo,1,3,4 Miquel Bioque,1,4 Eduard Parellada,1,3–5 Miquel Bernardo1–4

1Barcelona Clinic Schizophrenia Unit (BCSU), Neuroscience Institute, Hospital Clinic of Barcelona, 2Department of Psychiatry and Clinical Psychobiology, University of Barcelona, 3Institut d’Investigacions Biomèdiques August Pi I Sunyer (IDIBAPS), Barcelona, Spain; 4Centro de Investigación Biomédica en Red de Salud Mental (CIBERSAM), Madrid, Spain; 5Department of Pharmacology, University of Barcelona, Barcelona, Spain

Background and objectives: Short-term studies focused on once-monthly paliperidone palmitate (PP) at doses of 25 mg eq, 50 mg eq, 75 mg eq, 100 mg eq, or 150 mg eq have shown its efficacy and tolerability in the treatment of schizophrenia patients. However, few open-label and long-term studies are available regarding this new pharmacological formulation. Thus, our main aim was to review the scientific evidence on efficacy, safety, tolerability, and preference of PP in these populations.
Method: Electronic searches were conducted by using PubMed and ISI Web of Knowledge databases. All relevant studies published from 2009 until January 2015 were included without any language restriction if patients met diagnostic criteria for schizophrenia, and adequate information on efficacy, safety, and tolerability of once-monthly PP was available.
Results: Nineteen studies were identified irrespective of the study design and duration of the follow-up period. Randomized, double-blind, placebo-controlled trials found that schizophrenia patients receiving PP showed a significant improvement in psychotic symptoms and similar adverse events compared to placebo and suggested that all doses of PP were efficacious and well tolerated. Other studies demonstrated noninferiority of PP compared to risperidone long-acting injectable in recently diagnosed schizophrenia patients, chronically ill patients, as well as in acute and nonacute symptomatic schizophrenia patients, and a similar proportion of treatment-emergent adverse events between both groups were also noted.
Conclusion: Several studies have demonstrated that schizophrenia patients treated with PP show higher rates of improvement of psychotic symptoms compared to placebo, and similar efficacy and tolerability outcomes were noted when comparing PP to risperidone long-acting injectable or oral, paliperidone extended release.

Keywords: once-monthly paliperidone palmitate, long-acting antipsychotics, psychosis, schizophrenia, safety, efficacy, relapses
 

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