Impact of Long-Acting Injectable Versus Oral Antipsychotic Treatment on All-Cause Discontinuation Risk in People with Early Phase Schizophrenia and Comorbid Substance Use Disorder: A Secondary Analysis of the EULAST Randomized Trial.

ABSTRACT:

Background

Individuals with schizophrenia and comorbid substance use disorder (SUD) often experience poor treatment adherence, leading to worse clinical outcomes. However, high-quality evidence from randomized trials on the preferred mode of antipsychotic treatment in this population remains limited.

Aims

The aim was to examine whether long-acting injectable (LAI) antipsychotic treatment reduces the risk of all-cause discontinuation (ACD) compared with oral antipsychotics in individuals with early phase schizophrenia and comorbid SUD.

Methods

This study was a secondary analysis of the European Long-Acting Antipsychotics in Schizophrenia Trial (EULAST), a multisite, randomized, open-label trial conducted across multiple European healthcare settings. A total of 471 indi

SUBMITTER: Mortazavi M 

PROVIDER: S-EPMC12769605 | biostudies-literature | 2026 Jan

REPOSITORIES: biostudies-literature