The first of two Phase III ENLIGHTEN studies for Alkermes PLC's combination product for schizophrenia, ALKS 3831, show it has at least equivalent efficacy to olanzapine alone, but the study was too short to tell whether the combination can lessen the weight gain problem that plagues the older product.
The broad-spectrum antipsychotic product contains the novel drug samidorphan co-formulated with the established antipsychotic agent, olanzapine, in a single bilayer tablet