What the FDA labels say about taking them together
Citalopram and ivacaftor/lumacaftor
Ivacaftor/lumacaftor's FDA label of March 24, 2026 names citalopram in its drug interactions section; the citalopram labels PlainMeds reads (2) do not name ivacaftor/lumacaftor. The ivacaftor/lumacaftor label: “Concomitant use of ORKAMBI may reduce the exposure and effectiveness of citalopram, escitalopram, and sertraline.”
Check it at the source: the citalopram FDA label on DailyMed (effective October 9, 2023, Allergan, Inc.); the ivacaftor/lumacaftor FDA label on DailyMed (effective March 24, 2026, Vertex Pharmaceuticals Incorporated).
What does the citalopram label say about ivacaftor/lumacaftor?
Citalopram's label (effective October 9, 2023) and its 1 other brand-application label do not name ivacaftor/lumacaftor in these sections. A label lists what its studies and reports found; it is not a complete list.
Source: FDA drug label (Celexa), NDA020822 (Abbvie), as published by Allergan, Inc., effective October 9, 2023 (SPL set 4259d9b1-de34-43a4-85a8-41dd214e9177), via openFDA; the full label on DailyMed
What does the ivacaftor/lumacaftor label say about citalopram?
Ivacaftor/lumacaftor label, drug interactionsConcomitant use of ORKAMBI may reduce the exposure and effectiveness of citalopram, escitalopram, and sertraline.
Source: FDA drug label (ORKAMBI), Vertex Pharmaceuticals Incorporated, effective March 24, 2026 (SPL set 3fc1c40e-cfac-47a1-9e1a-61ead3570600), 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
| Citalopram | Ivacaftor/lumacaftor | |
|---|---|---|
| Labeled for | Depression | n/a |
| Boxed warning | Yes | No |
| Pharmacy cost (NADAC) | $0.026 per tablet 10 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