What the FDA labels say about taking them together
Dabigatran and primaquine
Primaquine's FDA label of February 11, 2026 names dabigatran in its drug interactions section; the dabigatran labels PlainMeds reads (2) do not name primaquine. The primaquine label: “P-gp Substrates Refer to the Prescribing Information for a P-gp substrate where minimal concentration changes may lead to serious adverse reactions for the recommended dosage modification and/or monitoring.”
Check it at the source: the dabigatran FDA label on DailyMed (effective June 25, 2025, Boehringer Ingelheim Pharmaceuticals Inc.); the primaquine FDA label on DailyMed (effective February 11, 2026, Sanofi-Aventis U.S. LLC).
What does the dabigatran label say about primaquine?
Dabigatran's label (effective June 25, 2025) and its 1 other brand-application label do not name primaquine in these sections. A label lists what its studies and reports found; it is not a complete list.
Source: FDA drug label (Pradaxa), Boehringer Ingelheim Pharmaceuticals Inc., effective June 25, 2025 (SPL set ba74e3cd-b06f-4145-b284-5fd6b84ff3c9), via openFDA; the full label on DailyMed
What does the primaquine label say about dabigatran?
Primaquine label, drug interactionsP-gp Substrates Refer to the Prescribing Information for a P-gp substrate where minimal concentration changes may lead to serious adverse reactions (e.g., digoxin and dabigatran) for the recommended dosage modification and/or monitoring.
Source: FDA drug label (Primaquine Phosphate), Sanofi-Aventis U.S. LLC, effective February 11, 2026 (SPL set 1bfbf4ae-81b8-4160-a00d-6322aadd4b59), 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
| Dabigatran | Primaquine | |
|---|---|---|
| Labeled for | Atrial fibrillation, Blood clots (DVT and PE), Stroke prevention | n/a |
| Boxed warning | Yes | No |
| Pharmacy cost (NADAC) | $0.795 per capsule 150 mg capsule | 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