What the FDA labels say about taking them together
Flecainide and sertraline
Sertraline's FDA label of August 8, 2023 names flecainide in its drug interactions section; the flecainide label PlainMeds reads does not name sertraline. The sertraline label: “ZOLOFT is a CYP2D6 inhibitor. The concomitant use of ZOLOFT with a CYP2D6 substrate may increase the exposure of the CYP2D6 substrate.”
Check it at the source: the flecainide FDA label on DailyMed (effective June 11, 2026, Amneal Pharmaceuticals of New York LLC); the sertraline FDA label on DailyMed (effective August 8, 2023, Viatris Specialty LLC).
What does the flecainide label say about sertraline?
Flecainide's label (effective June 11, 2026) does not name sertraline in these sections. A label lists what its studies and reports found; it is not a complete list.
Source: FDA drug label (Flecainide Acetate), Amneal Pharmaceuticals of New York LLC, effective June 11, 2026 (SPL set ee9595d5-08a1-4529-9215-ddc3c7f929c4), via openFDA; the full label on DailyMed
What does the sertraline label say about flecainide?
Sertraline label, drug interactionsDrugs Metabolized by CYP2D6 Clinical Impact: ZOLOFT is a CYP2D6 inhibitor [See ]. The concomitant use of ZOLOFT with a CYP2D6 substrate may increase the exposure of the CYP2D6 substrate. Intervention: Decrease the dosage of a CYP2D6 substrate if needed with concomitant ZOLOFT use. Conversely, an increase in dosage of a CYP2D6 substrate may be needed if ZOLOFT is discontinued. …
Source: FDA drug label (Sertraline Hydrochloride, NDA020990), Mylan Pharmaceuticals Inc., effective September 15, 2024 (SPL set 1a58062b-e635-431a-908d-2651c6a4a21c), via openFDA
Source: FDA drug label (Zoloft), Viatris Specialty LLC, effective August 8, 2023 (SPL set fda754f6-d0f3-4dce-a17a-927d64f912f7), 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
| Flecainide | Sertraline | |
|---|---|---|
| Labeled for | n/a | Depression, Anxiety |
| Boxed warning | No | Yes |
| Pharmacy cost (NADAC) | $0.171 per tablet 100 mg tablet | $0.0507 per tablet 100 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