David McDonnell, MD

Olanzapine/samidorphan was associated with significant and durable improvement in negative symptoms of schizophrenia, overall and among patients with prominent and predominant negative symptoms.

Treatment with a combination of olanzapine and samidorphan was associated with less weight gain and reduced risk of reaching ≥7% or ≥10% gain in body weight versus olanzapine over...

During up to 4 years of treatment, the combination of olanzapine/samidorphan was safe and well-tolerated, and patients’ symptoms remained stable.

In patients with early-phase schizophrenia or bipolar disorder, combination olanzapine and samidorphan resulted in less weight gain at week 12 than olanzapine alone. Antipsychotic efficacy was similar between the...