Who are Prosom's main competitors?

Direct comparators (same drug class / molecular target / therapeutic area): Zulresso, Onfi, Sonata, Prazene, Pentothal, Klonopin.

How often does this brief refresh?

Every 30 minutes from primary sources (FDA, EMA, MHRA, PMDA, ClinicalTrials.gov, USPTO). Subscribe to the RSS feed below for push alerts.

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Subscribe to /feed/ci/estazolam.xml in any RSS reader (Feedly, Inoreader, NewsBlur). Every regulatory action, trial readout, or patent event lands in your feed automatically.

Last reviewed 2026-05-13 · How we verify

Prosom — Competitive Intelligence Brief

Prosom (ESTAZOLAM) competitive landscape: 6 comparators, recent regulatory actions, upcoming PDUFA, patent timeline. Class: Benzodiazepine [EPC]. Area: Neuroscience.

marketed Benzodiazepine [EPC] GABA-A receptor alpha-1/beta-2/gamma-2 Neuroscience Small molecule Live · refreshed every 30 min

Target snapshot

Prosom (ESTAZOLAM) — Abbott.

Comparator set (6 drugs)

Auto-detected by same drug class / molecular target / therapeutic area, ranked by phase + recency. Override with ?vs=slug1,slug2,….

Drug	Generic	Sponsor	Phase	Class	Target	Approval / PDUFA
Prosom TARGET	ESTAZOLAM	Abbott	marketed	Benzodiazepine [EPC]	GABA-A receptor alpha-1/beta-2/gamma-2	1990-01-01
Zulresso	BREXANOLONE	Sage Therap	marketed	Neuroactive Steroid Gamma-Aminobutyric Acid A Receptor Positive Modulator	GABA-A receptor alpha-1/beta-2/gamma-2	2019-01-01
Onfi	CLOBAZAM	Lundbeck Pharms Llc	marketed	Benzodiazepine [EPC]	GABA-A receptor alpha-1/beta-2/gamma-2	2011-01-01
Sonata	ZALEPLON	Pfizer	marketed	gamma-Aminobutyric Acid A Receptor Agonist [EPC]	GABA-A receptor alpha-1/beta-2/gamma-2	1999-01-01
Prazene	PRAZEPAM	Parke Davis	marketed		GABA-A receptor alpha-1/beta-2/gamma-2	1982-01-01
Pentothal	THIOPENTAL	Abbott	marketed	thiopental	GABA-A receptor alpha-1/beta-2/gamma-2	1982-01-01
Klonopin	clonazepam	Generic (originally Roche)	marketed	Benzodiazepine [EPC]	GABA-A receptor alpha-1/beta-2/gamma-2, GABA-A receptor; anion channel, GABA-A receptor; anion channel	1975-06-04

Recent regulatory actions (last 90 days)

No regulatory actions in the last 90 days for this set.

Upcoming PDUFA dates (next 180 days)

No PDUFA dates in the next 180 days for this set.

Patent timeline (forward window)

2039-09-05 — Onfi · 12403090 · Formulation · US
2039-09-05 — Onfi · 12290597 · Formulation · US
2040-01-31 — Onfi · 11541002 · Formulation · US

Sponsor landscape (Benzodiazepine [EPC] class)

Generic (originally Roche) · 2 drugs in this class
· 2 drugs in this class
Abliva AB · 1 drug in this class
Mallinckrodt · 1 drug in this class
Generic (originally Wyeth/Pfizer) · 1 drug in this class
Lundbeck Pharms Llc · 1 drug in this class
Abbott · 1 drug in this class

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Cite this brief

Drug Landscape (2026). Prosom — Competitive Intelligence Brief. https://druglandscape.com/ci/estazolam. Accessed 2026-05-13.

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