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Doxazosin (drug) — Competitive Intelligence Brief
marketed
Alpha-1 adrenergic receptor antagonist
Alpha-1 adrenergic receptor
Cardiovascular; Urology
Small molecule
Live · refreshed every 30 min
Target snapshot
Doxazosin (drug) (Doxazosin (drug)) — Japan Heart Foundation. Doxazosin is an alpha-1 adrenergic receptor antagonist that blocks norepinephrine signaling in blood vessels and the prostate, causing vasodilation and smooth muscle relaxation.
Comparator set (6 drugs)
| Drug | Generic | Sponsor | Phase | Class | Target | Approval / PDUFA |
|---|---|---|---|---|---|---|
| Doxazosin (drug) TARGET | Doxazosin (drug) | Japan Heart Foundation | marketed | Alpha-1 adrenergic receptor antagonist | Alpha-1 adrenergic receptor | |
| Xylometazoline - intranasal application | Xylometazoline - intranasal application | Association Asthma, Bulgaria | marketed | Alpha-1 adrenergic agonist (nasal decongestant) | Alpha-1 adrenergic receptor | |
| Visine® for Contacts® | Visine® for Contacts® | Merck Sharp & Dohme LLC | marketed | Ophthalmic decongestant | Alpha-1 adrenergic receptor | |
| diphenhydramine/phenylephrine/cocoa; placebo; dextromethorphan | diphenhydramine/phenylephrine/cocoa; placebo; dextromethorphan | Montefiore Medical Center | marketed | Combination cold/cough/allergy remedy | H1 histamine receptor (diphenhydramine); alpha-1 adrenergic receptor (phenylephrine); NMDA receptor and sigma-1 receptor (dextromethorphan) | |
| Norepinephrine (static group) | Norepinephrine (static group) | Algemeen Ziekenhuis Maria Middelares | marketed | Catecholamine vasopressor | Alpha-1 adrenergic receptor, Beta-1 adrenergic receptor | |
| Epinephrine Injection | Epinephrine Injection | London Health Sciences Centre Research Institute OR Lawson Research Institute of St. Joseph's | marketed | Catecholamine; alpha and beta adrenergic agonist | Alpha-1 adrenergic receptor, Beta-1 adrenergic receptor, Beta-2 adrenergic receptor | |
| Experimental dosing of labetalol | Experimental dosing of labetalol | Albany Medical College | marketed | Alpha-beta adrenergic antagonist | Alpha-1 adrenergic receptor, Beta-1 adrenergic receptor, Beta-2 adrenergic receptor |
Recent regulatory actions (last 90 days)
Upcoming PDUFA dates (next 180 days)
Patent timeline (forward window)
Sponsor landscape (Alpha-1 adrenergic receptor antagonist class)
- Brian J Lipworth · 1 drug in this class
- CHU de Quebec-Universite Laval · 1 drug in this class
- Eli Lilly and Company · 1 drug in this class
- Haffkine Bio-Pharmaceutical Corporation Ltd. · 1 drug in this class
- Hospital Authority, Hong Kong · 1 drug in this class
- Japan Heart Foundation · 1 drug in this class
- Pfizer's Upjohn has merged with Mylan to form Viatris Inc. · 1 drug in this class
- San Francisco Veterans Affairs Medical Center · 1 drug in this class
- Sanofi · 1 drug in this class
- Shanghai Huilun Pharmaceutical Co., Ltd. · 1 drug in this class
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Cite this brief
Drug Landscape (2026). Doxazosin (drug) — Competitive Intelligence Brief. https://druglandscape.com/ci/doxazosin-drug. Accessed 2026-05-16.
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