What the FDA labels say about taking them together
Doxazosin and propranolol
Propranolol's FDA label of January 15, 2026 names doxazosin in its drug interactions section; the doxazosin labels PlainMeds reads (2) do not name propranolol. The propranolol label: “Postural hypotension has been reported in patients taking both beta-blockers and terazosin or doxazosin.”
Check it at the source: the doxazosin FDA label on DailyMed (effective October 15, 2023, Viatris Specialty LLC); the propranolol FDA label on DailyMed (effective January 15, 2026, Mylan Pharmaceuticals Inc.).
What does the doxazosin label say about propranolol?
Doxazosin's label (effective October 15, 2023) and its 1 other brand-application label do not name propranolol in these sections. A label lists what its studies and reports found; it is not a complete list.
Source: FDA drug label (Cardura), Viatris Specialty LLC, effective October 15, 2023 (SPL set 5e1f5e49-2da1-43ab-9795-228a8bcc5a82), via openFDA; the full label on DailyMed
What does the propranolol label say about doxazosin?
Propranolol label, drug interactionsPostural hypotension has been reported in patients taking both beta-blockers and terazosin or doxazosin.
Source: FDA drug label (Propranolol Hydrochloride), Mylan Pharmaceuticals Inc., effective January 15, 2026 (SPL set b94dcec7-7633-4a33-9cea-48161adeaf93), 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
| Doxazosin | Propranolol | |
|---|---|---|
| Labeled for | Enlarged prostate (BPH), High blood pressure | High blood pressure, Angina, Atrial fibrillation, Migraine |
| Boxed warning | No | No |
| Pharmacy cost (NADAC) | $0.0752 per tablet 1 mg tablet | $0.0493 per tablet 20 mg tablet |
| Shortage now | No current entry | In shortage |
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