Combination product
Pronunciation: oe-LAN-za-peen and sam-i-DOR-fan (lee-BAWL-vee)
Combination of Olanzapine and Samidorphan.
Each component keeps its own pharmacology page; the combination itself adds no new mechanism.

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| FDA dosing | Population | Start | Target | Max |
|---|---|---|---|---|
| Schizophrenia | Adults | 5/10 or 10/10 mg QD | 10/10, 15/10, or 20/10 mg QD | 20/10 mg QD |
| Bipolar I mania/mixed, monotherapy | Adults | 10/10 or 15/10 mg QD | 10/10–20/10 mg QD (maintenance 5/10–20/10) | 20/10 mg QD |
| Bipolar I mania/mixed, adjunct to lithium/valproate | Adults | 10/10 mg QD | 10/10, 15/10, or 20/10 mg QD | 20/10 mg QD |
Titration Schizophrenia & adjunct: adjust at weekly intervals (5-mg olanzapine steps). Bipolar monotherapy (acute): ≥24 h between adjustments.
Renal Not recommended in end-stage renal disease.
Hepatic No adjustment needed - exposure is higher in moderate hepatic impairment but not expected to be clinically relevant; severe hepatic impairment not studied
Opioid-free interval required before starting: ≥7 days (short-acting) / ≥14 days (long-acting opioids).
Available strengths
Pregnancy Third-trimester exposure → neonatal EPS/withdrawal; no established olanzapine birth-defect risk; no human samidorphan data; pregnancy registry 1-866-961-2388.
Lactation Present in milk at low levels (<1% weight-adjusted maternal dose); monitor infant for sedation, irritability, poor feeding, EPS.
| Strength | #/mo | generic $/mo | brand $/mo | CostPlus | |
|---|---|---|---|---|---|
| 5/10 mg | tab | 30 qd | — | $1,656.41 | not offered |
| 10/10 mg | tab | 30 qd | — | $1,652.91 | not offered |
| 15/10 mg | tab | 30 qd | — | $1,653.58 | not offered |
| 20/10 mg | tab | 30 qd | — | $1,649.45 | not offered |
Other forms: Samidorphan (in LYBALVI)
Part D rank #733.