What the FDA labels say about taking them together
Diltiazem and fluvoxamine
Fluvoxamine's FDA label of June 27, 2026 names diltiazem in its drug interactions section; the diltiazem labels PlainMeds reads (4) do not name fluvoxamine.
Check it at the source: the diltiazem FDA label on DailyMed (effective August 7, 2026, Bausch Health US, LLC); the fluvoxamine FDA label on DailyMed (effective June 27, 2026, Zydus Pharmaceuticals USA Inc.).
What does the diltiazem label say about fluvoxamine?
Diltiazem's label (effective August 7, 2026) and its 3 other brand-application labels do not name fluvoxamine in these sections. A label lists what its studies and reports found; it is not a complete list.
Source: FDA drug label (TIAZAC EXTENDED RELEASE), Bausch Health US, LLC, effective August 7, 2026 (SPL set c567fe7e-887e-4291-a0d1-2dd3f25cbf25), via openFDA; the full label on DailyMed
What does the fluvoxamine label say about diltiazem?
Fluvoxamine label, drug interactionsBradycardia has been reported with the coadministration of immediate-release fluvoxamine maleate tablets and diltiazem.
Source: FDA drug label (Fluvoxamine Maleate, NDA021519), ANI Pharmaceuticals, Inc., effective August 4, 2025 (SPL set 7ecd83ec-88f5-4f85-9cc2-9068375d8820), via openFDA
Source: FDA drug label (Fluvoxamine maleate extended-release), Zydus Pharmaceuticals USA Inc., effective June 27, 2026 (SPL set 6c71d4f6-54b5-4d3a-8d2f-b7773c92c32e), 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
| Diltiazem | Fluvoxamine | |
|---|---|---|
| Labeled for | High blood pressure, Angina, Atrial fibrillation | n/a |
| Boxed warning | No | Yes |
| Pharmacy cost (NADAC) | $0.144 per capsule 24h ER(cd) 120 mg capsule | $4.08 per capsule 100 mg capsule |
| Shortage now | A presentation being discontinued | 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