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Reservoir-Type Subcutaneous Implantable Devices Containing Porous Rate Controlling Membranes for Sustained Delivery of Risperidone.
Adv Healthc Mater
January 2025
School of Pharmacy, Queen's University Belfast, Lisburn Road 97, Belfast, BT9 7BL, UK.
Implantable drug delivery systems are crucial for achieving sustained delivery of active compounds to specific sites or systemic circulation. In this study, a novel reservoir-type implant combining a biodegradable rate-controlling membrane with a drug-containing core prepared using direct compression techniques is developed. The membrane is composed of poly(caprolactone) (PCL), and risperidone (RIS) served as the model drug.
View Article and Find Full Text PDFA case report of exacerbation of extrapyramidal symptoms following the switch from risperidone to paliperidone during valproate therapy.
BMC Psychiatry
January 2025
Department of Psychiatry, Yokohama City University School of Medicine, 3-9 Fukuura, Kanazawa-Ku, Yokohama, Kanagawa, 236-0004, Japan.
Background: Paliperidone is a second-generation antipsychotic and the main active metabolite of risperidone, formulated to provide consistent therapeutic effects through an extended-release system, designed to provide consistent therapeutic effects through an extended-release formulation. While commonly used in clinical practice, switching from risperidone to paliperidone, particularly during valproate therapy, can pose challenges due to potential pharmacokinetic interactions that may increase the risk of extrapyramidal symptoms (EPS). Despite clinical observations suggesting these interactions, case reports documenting such adverse effects are scarce.
View Article and Find Full Text PDFPhysiologically based pharmacokinetic modeling to predict the effect of risperidone on aripiprazole pharmacokinetics in subjects with different CYP2D6 genotypes and individuals with hepatic impairment.
Ther Adv Drug Saf
December 2024
Genetics and Biochemistry Laboratory, Shanghai Mental Health Center, Shanghai Jiao Tong University School of Medicine, 600 Wan Ping Nan Road, Shanghai 200030, China.
Background: Aripiprazole and risperidone, widely used atypical antipsychotics, are commonly adjunctively prescribed in clinical practice. When aripiprazole was combined with risperidone, the genotype of drug-metabolizing enzymes and liver impairment may lead to complex pharmacokinetic changes. The Physiologically Based Pharmacokinetic (PBPK) model can predict the influence of these factors on plasma concentration and optimize dosage regimens.
View Article and Find Full Text PDFHead-to-Head Comparison of UHPLC-MS/MS and Alinity C for Plasma Analysis of Risperidone and Paliperidone.
Pharmaceuticals (Basel)
October 2024
Pharmacy Department, University Clinical Hospital of Santiago de Compostela (SERGAS), 15706 Santiago de Compostela, Spain.
Risperidone, a second-generation antipsychotic widely used in the treatment of schizophrenia, requires therapeutic drug monitoring due to its high interindividual variability. UHPLC-MS/MS is considered the gold standard for pharmacokinetic studies owing to its superior sensitivity and specificity, although it involves time-consuming manual sample preparation. In contrast, the Alinity C system, fully automated, simplifies sample processing, but only measures the active moiety (risperidone plus paliperidone).
View Article and Find Full Text PDFRisperidone ISM: review and update of its usefulness in all phases of schizophrenia.
Ther Adv Psychopharmacol
October 2024
Medical Department, Laboratorios Farmacéuticos ROVI, S.A., Madrid, Spain.
One of the most important challenges in the management of patients with schizophrenia is to ensure adherence to antipsychotic treatment. The contribution of long-acting injectables (LAI) is undeniable in this matter, but there are still some unmet medical needs not covered by these drugs (e.g.
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