What the FDA labels say about taking them together
Mirtazapine and oliceridine
Oliceridine's FDA label of December 31, 2025 names mirtazapine in its drug interactions section; the mirtazapine label PlainMeds reads does not name oliceridine. The oliceridine label: “The concomitant use of opioids with other drugs that affect the serotonergic neurotransmitter system has resulted in serotonin syndrome.”
Check it at the source: the mirtazapine FDA label on DailyMed (effective August 6, 2025, Organon LLC); the oliceridine FDA label on DailyMed (effective December 31, 2025, Trevena, Inc.).
What does the mirtazapine label say about oliceridine?
Mirtazapine's label (effective August 6, 2025) does not name oliceridine in these sections. A label lists what its studies and reports found; it is not a complete list.
Source: FDA drug label (REMERON), Organon LLC, effective August 6, 2025 (SPL set 98ad1917-a094-44f5-a28f-a64a8cfcd887), via openFDA; the full label on DailyMed
What does the oliceridine label say about mirtazapine?
Oliceridine label, drug interactionsClinical Impact: The concomitant use of opioids with other drugs that affect the serotonergic neurotransmitter system has resulted in serotonin syndrome. … (TCAs), triptans, 5-HT3 receptor antagonists, drugs that effect the serotonin neurotransmitter system (e.g., mirtazapine, trazodone, tramadol), certain muscle relaxants (i.e., cyclobenzaprine, metaxalone), monoamine oxidase (MAO) inhibitors (those intended to treat psychiatric disorders and also others, such …
Source: FDA drug label (OLINVYK), Trevena, Inc., effective December 31, 2025 (SPL set ce167984-8b9d-40b7-84ce-d0f33fff1eaa), via openFDA; the full label on DailyMed
These are the labels' own sentences. PlainMeds does not grade interactions; a pharmacist or prescriber can say what they mean for one person's medicines.
Both medicines on the record
| Mirtazapine | Oliceridine | |
|---|---|---|
| Labeled for | Depression | Pain |
| Boxed warning | Yes | Yes |
| Pharmacy cost (NADAC) | $0.063 per tablet 15 mg tablet | n/a |
| Shortage now | No current entry | No current entry |
Source: FDA NDC Directory, CMS NADAC of October 7, 2026 and the FDA Drug Shortage Database (FDA files October 8, 2026)
What next?
- Check more medicines together
- up to five at once