What the FDA labels say about taking them together
Fentanyl and ziprasidone
Ziprasidone's FDA label of July 20, 2026 names fentanyl in its warnings and precautions section; fentanyl's label does not name ziprasidone itself but warns about its class (Atypical antipsychotics). The ziprasidone label: “The risk is increased with concomitant use of other serotonergic drugs and with drugs that impair metabolism of serotonin, i.e., monoamine oxidase inhibitors (MAOIs).”
Check it at the source: the fentanyl FDA label on DailyMed (effective March 6, 2026, Hikma Pharmaceuticals USA Inc.); the ziprasidone FDA label on DailyMed (effective July 20, 2026, Apotex Corp.).
What does the fentanyl label say about ziprasidone?
Fentanyl's label does not name ziprasidone itself; it warns about its class (Atypical antipsychotics):
Fentanyl label, warnings and precautionsProfound sedation, respiratory depression, coma, and death may result from the concomitant use of Fentanyl Citrate Injection with benzodiazepines and/or other CNS depressants, including alcohol (e.g., non-benzodiazepine sedatives/hypnotics, anxiolytics, tranquilizers, muscle relaxants, general anesthetics, antipsychotics, gabapentinoids [gabapentin or pregabalin], and other opioids).
Fentanyl label, drug interactionsFluids or other measures to counter hypotension should be available [see Warnings and Precautions (5.4) ]. Benzodiazepines and other sedatives/hypnotics, anxiolytics, barbiturates, tranquilizers, muscle relaxants, general anesthetics, antipsychotics, other opioids, alcohol.
Source: FDA drug label (Fentanyl Citrate), Hikma Pharmaceuticals USA Inc., effective March 6, 2026 (SPL set ce5db1c2-feb1-4ad2-847a-d02e865bd47e), via openFDA; the full label on DailyMed
What does the ziprasidone label say about fentanyl?
Ziprasidone label, warnings and precautionsThe risk is increased with concomitant use of other serotonergic drugs (including selective serotonin reuptake inhibitors (SSRIs), serotonin norepinephrine reuptake inhibitors (SNRIs), triptans, tricyclic antidepressants, fentanyl, tramadol, meperidine, methadone, lithium, tryptophan, buspirone, amphetamines, and St. John’s Wort) and with drugs that impair metabolism of serotonin, i.e., monoamine oxidase inhibitors (MAOIs) [see Contraindications ( 4.3 ), Adverse Reactions ( 6.2 ), Drug Interactions ( 7.3 )].
Source: FDA drug label (ziprasidone hydrochloride), Apotex Corp., effective July 20, 2026 (SPL set ccfd5ba2-7271-f3dd-4c98-7418c1a4b54a), 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
| Fentanyl | Ziprasidone | |
|---|---|---|
| Labeled for | Pain | Bipolar disorder, Schizophrenia |
| Boxed warning | Yes | Yes |
| Pharmacy cost (NADAC) | $1.79 per mL 100 mcg/2 mL vial | $0.269 per capsule 20 mg capsule |
| Shortage now | In shortage | 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