What the FDA labels say about taking them together
Linezolid and trazodone
Trazodone's FDA label of January 22, 2026 names linezolid in its contraindications section; linezolid's label does not name trazodone itself but warns about its class (serotonin reuptake inhibitors). The trazodone label: “The concomitant use of MAOIs and serotonergic drugs including RALDESY increases the risk of serotonin syndrome.”
Check it at the source: the linezolid FDA label on DailyMed (effective June 19, 2026, Hospira, Inc.); the trazodone FDA label on DailyMed (effective January 22, 2026, Zydus Pharmaceuticals USA Inc.).
What does the linezolid label say about trazodone?
Linezolid's label does not name trazodone itself; it warns about its class (serotonin reuptake inhibitors):
Linezolid label, warnings and precautionsSpontaneous reports of serotonin syndrome including fatal cases associated with the concomitant use of linezolid and serotonergic agents have been reported. Commonly used serotonergic agents include serotonin reuptake inhibitors, serotonin-norepinephrine reuptake inhibitors, tricyclic antidepressants, buspirone, serotonin 5-HT1 receptor agonists (triptans), and opioids, including meperidine.
Linezolid label, warnings and precautionsSpontaneous reports of serotonin syndrome including fatal cases associated with the concomitant use of ZYVOX and serotonergic agents have been reported. Commonly used serotonergic agents include serotonin reuptake inhibitors, serotonin-norepinephrine reuptake inhibitors, tricyclic antidepressants, buspirone, serotonin 5‑HT1 receptor agonists (triptans), and opioids, including meperidine.
Source: FDA drug label (Linezolid), Hospira, Inc., effective June 19, 2026 (SPL set c401f1a8-cc37-461b-bfef-f2e156629bf8), via openFDA; the full label on DailyMed
What does the trazodone label say about linezolid?
Trazodone label, contraindicationsTrazodone hydrochloride tablets are contraindicated in: Patients taking, or within 14 days of stopping, monoamine oxidase inhibitors (MAOIs), including MAOIs such as linezolid or intravenous methylene blue, because of an increased risk of serotonin syndrome [see Warnings and Precautions ( 5.2 ), Drug Interactions ( 7.1 )].
Trazodone label, drug interactionsIntervention; Trazodone is contraindicated in patients taking MAOIs, including MAOIs such as linezolid or intravenous methylene blue [see Contraindications (4), Dosage and Administration (2.3, 2.4), and Warnings and Precautions (5.2)].
Trazodone label, warnings and precautionsIf it is necessary to initiate treatment with an MAOI such as linezolid or intravenous methylene blue in a patient taking trazodone, discontinue trazodone before initiating treatment with the MAOI [see Contraindications ( 4 ), Drug Interactions ( 7.1 )].
Raldesy Tm label (Validus Pharmaceuticals LLC, September 1, 2026), drug interactionsMonoamine Oxidase Inhibitors (MAOIs) Clinical Impact: The concomitant use of MAOIs and serotonergic drugs including RALDESY increases the risk of serotonin syndrome. Intervention: RALDESY is contraindicated in patients taking MAOIs, including MAOIs such as linezolid or intravenous methylene blue [see, Dosage and Administration (,, and ].
Source: FDA drug label (Raldesy Tm, NDA218637), Validus Pharmaceuticals LLC, effective September 1, 2026 (SPL set 34708cc1-b0b2-4fd0-b9f3-7f008b457fc9), via openFDA
Source: FDA drug label (Trazodone Hydrochloride), Zydus Pharmaceuticals USA Inc., effective January 22, 2026 (SPL set 704aebf9-2fff-4ef3-8323-9ff0d7f0ffd9), 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
| Linezolid | Trazodone | |
|---|---|---|
| Labeled for | Bacterial infections | Depression |
| Boxed warning | No | Yes |
| Pharmacy cost (NADAC) | $1.44 per tablet 600 mg tablet | $0.0307 per tablet 50 mg tablet |
| 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