Last Updated: May 10, 2026

FENTANYL CITRATE AND DROPERIDOL Drug Patent Profile


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Which patents cover Fentanyl Citrate And Droperidol, and what generic alternatives are available?

Fentanyl Citrate And Droperidol is a drug marketed by Astrazeneca and Hospira and is included in four NDAs.

The generic ingredient in FENTANYL CITRATE AND DROPERIDOL is droperidol; fentanyl citrate. There are five drug master file entries for this compound. Additional details are available on the droperidol; fentanyl citrate profile page.

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Summary for FENTANYL CITRATE AND DROPERIDOL

US Patents and Regulatory Information for FENTANYL CITRATE AND DROPERIDOL

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Exclusivity Expiration
Astrazeneca FENTANYL CITRATE AND DROPERIDOL droperidol; fentanyl citrate INJECTABLE;INJECTION 072026-001 Apr 13, 1989 DISCN No No ⤷  Start Trial ⤷  Start Trial ⤷  Start Trial
Hospira FENTANYL CITRATE AND DROPERIDOL droperidol; fentanyl citrate INJECTABLE;INJECTION 071982-001 May 4, 1988 DISCN No No ⤷  Start Trial ⤷  Start Trial ⤷  Start Trial
Astrazeneca FENTANYL CITRATE AND DROPERIDOL droperidol; fentanyl citrate INJECTABLE;INJECTION 072027-001 Apr 13, 1989 DISCN No No ⤷  Start Trial ⤷  Start Trial ⤷  Start Trial
Astrazeneca FENTANYL CITRATE AND DROPERIDOL droperidol; fentanyl citrate INJECTABLE;INJECTION 072028-001 Apr 13, 1989 DISCN No No ⤷  Start Trial ⤷  Start Trial ⤷  Start Trial
>Applicant >Tradename >Generic Name >Dosage >NDA >Approval Date >TE >Type >RLD >RS >Patent No. >Patent Expiration >Product >Substance >Delist Req. >Exclusivity Expiration

Market Dynamics and Financial Trajectory for Fentanyl Citrate and Droperidol

Last updated: April 25, 2026

Summary: Fentanyl citrate and droperidol are marketed as a combined injectable product used for procedural sedation and anesthesia-adjunct indications. The revenue trajectory is driven by (1) perioperative and procedural volume, (2) uptake of hospital formularies and anesthesia workflows, (3) loss or restriction of share due to safety-driven prescribing changes and regulatory labeling in different jurisdictions, and (4) generic competition after originator exclusivity. The financial profile is typically characterized by U.S. hospital-centric demand, pricing pressure from generics and multisource supply, and volatility around guideline and risk-management updates affecting droperidol use.

What to read in this market: the combined product’s performance depends less on new clinical breakthroughs and more on supply, contracting, labeling, and substitution dynamics in hospital purchasing.


Where does demand come from? Perioperative and procedural sedation

Fentanyl citrate is an opioid analgesic used across anesthesia and procedural settings. Droperidol is used as an adjunct (historically for antiemetic effects and to support sedation workflows depending on jurisdiction/label). Together, the combination is positioned for perioperative sedation/anesthesia adjunct use in controlled medical environments (primarily hospitals).

Demand drivers

  • Operating room throughput: The number of procedures requiring anesthesia or deep sedation is the primary volume lever.
  • Formulary placement and protocol adoption: Hospitals standardize sedation and anesthesia adjuncts through committee decisions, which can lock in market share for years.
  • Competitor substitution risk: Therapeutic switching to single-entity generics, alternative sedation protocols, or different antiemetic strategies affects unit demand.

Key channel

  • Institutional (hospital) procurement: Tendering, group purchasing organization (GPO) contracting, and pharmacy committee approval determine ordering.

How do safety and labeling dynamics shape prescribing?

Droperidol has been subject to safety scrutiny tied to QT prolongation risk. That history affects market access, prescribing comfort, monitoring requirements, and institutional policy.

Labeling and risk-management effects (market impact)

  • Restricted use rules in hospitals: Many institutions impose ECG monitoring or exclude specific patient populations, reducing the eligible patient pool.
  • Protocol conservatism: Even when legally available, practitioners may prefer alternative antiemetics or adjunct sedatives with fewer operational barriers.
  • Variation by jurisdiction: Uptake differs by region due to how agencies handle risk language and postmarketing requirements.

Net effect on finance: Safety-driven controls reduce addressable utilization and raise “hurdle rates” for adoption, which makes revenue growth more dependent on contracting and supply continuity than on demand expansion.


What does pricing pressure look like? Hospital buying + generic competition

Once generics enter, pricing typically compresses. For combined products, the competitive set can include:

  • Same-combination generics (if marketed)
  • Component substitution using fentanyl citrate plus droperidol from separate suppliers
  • Protocol substitution (different sedation regimens)

Typical pricing dynamics

  • Downward net price pressure: Discounts and tender pricing push realized revenue lower than list pricing.
  • Mix effects: Revenue can remain stable in units but decline in dollars if competitors undercut or if hospitals switch to lower-cost alternatives.

Competitive structure

  • Multisource availability post-exclusivity changes procurement leverage from originator to buyers.
  • Switching friction is low in institutions when protocols allow component-level substitution.

Net effect on finance: Revenue tends to flatten after exclusivity periods, then declines in real terms unless the product retains formulary status and avoids substitution.


How do supply and manufacturing events change financial trajectory?

For injectables, supply continuity is a major determinant of quarterly performance.

Supply-related revenue levers

  • Manufacturing scale reliability: Any quality or production disruption reduces ability to meet hospital demand.
  • Regulatory standing: Sustained market access depends on maintaining compliant production and labeling consistency.
  • Shortage cycles: Shortages can temporarily increase realized prices and stabilize volume, then reverse when supply normalizes.

Net effect on finance: The financial curve is usually stepwise, with “flat-to-down” trends under normal conditions and episodic spikes around supply constraints.


What are the market size implications for the combined product?

A combined injectable’s addressable market is constrained by:

  • Operating procedure volume
  • Institutional willingness to use droperidol under their risk policies
  • Whether the combined product is preferred versus component-level prescribing

Practical sizing logic used by buyers

  • Hospitals often benchmark sedation regimens against:
    • drug acquisition cost
    • monitoring and workflow cost (ECG needs, observation time)
    • medication waste/packaging economics
  • If component substitution is permitted and cheaper, the combined product faces a structural disadvantage.

How does the U.S. regulatory environment affect growth and revenue stability?

In the U.S., product life-cycle dynamics for injectables follow:

  • Exclusivity and eventual generic entry
  • Labeling updates tied to safety
  • Market access via inclusion on preferred lists, wholesaler distribution performance, and contract execution

Financial consequences

  • Early period: Higher unit pricing can support stronger revenue growth while exclusivity holds.
  • Later period: Generic substitution and component prescribing pressure compress margins.
  • Ongoing: Safety-related monitoring language can lower market penetration relative to alternatives.

What is the most likely revenue pattern over time?

Given the typical lifecycle of a hospital injectable and the safety-driven adoption constraints on droperidol, the combined product’s trajectory generally follows this pattern:

  1. Launch-to-exclusivity period: revenue increases via formulary penetration
  2. Post-exclusivity: unit share stabilizes then declines as generics and substitutions scale
  3. Mature market: modest volume stability but margin compression from price competition
  4. Policy-driven volatility: temporary reversals if protocols shift or supply tightens

Financial trajectory table (directional, lifecycle-based)

Lifecycle phase Volume trend Net price trend Revenue trend Primary driver
Exclusivity / early adoption Up Higher Up Formulary conversion + lack of substitution
Generic entry Flat to down Down Flattish to down Multisource pricing + component substitution
Mature market Flat Down Down or flat Contracting leverage and buyer switching
Safety or supply shock Volatile Mixed Volatile Monitoring policy changes or shortage normalization

What KPIs indicate near-term financial movement?

Hospital injectable markets can be monitored using buyer and supply signals.

Leading indicators

  • GPO and major IDN contract awards (share shifts)
  • Wholesaler order fill rates (availability)
  • Incidence of substitution in formularies (protocol changes)
  • Safety-monitoring policy updates (ECG requirements and patient exclusions)

Lagging indicators

  • Unit shipments vs. net sales divergence (pricing compression)
  • Gross-to-net ratio drift (rebates, chargebacks, tender discounts)
  • Accounts receivable turn changes linked to distributor inventory cycles

Scenario analysis for financial outcomes under market shocks

The combined product is exposed to two shock types: (1) substitution and (2) operational constraints.

Substitution shock (competitive or protocol-driven)

  • Mechanism: Hospitals switch to fentanyl-only plus another antiemetic/adjunct or use component-level dosing from lower-cost suppliers.
  • Financial signature: Units decline; net price may not fully offset, producing faster revenue deterioration than competitors.

Operational shock (supply disruption)

  • Mechanism: Plant downtime, quality hold, or shortage triggers higher contracting pressure.
  • Financial signature: Units can fall briefly due to allocation, but realized pricing can temporarily improve during constrained supply, smoothing revenue decline.

What should investors and strategists prioritize?

Commercial levers that preserve revenue

  • Contracting discipline: win preferred list positions where droperidol monitoring requirements are already operationalized.
  • Supply reliability: ensure consistent fill rates to prevent formulary switching.
  • Product communications aligned with monitoring workflows: minimize friction for hospital compliance.

R&D levers that matter less (and when they matter)

  • New indications for combined use rarely overcome generics and safety-friction quickly.
  • Clinical differentiation is most valuable if it changes the monitoring burden or expands eligible patient subsets.

Key Takeaways

  • Demand is hospital- and procedure-driven, with performance tied to OR throughput and anesthesia workflow adoption.
  • Droperidol safety and QT-related monitoring language materially constrains adoption, reducing addressable utilization and increasing protocol variability.
  • Revenue trajectories typically follow an exclusivity-to-maturity lifecycle: growth early, then flattening and margin compression after generic and substitution pressure.
  • Supply reliability and contract wins drive near-term volatility more than brand-new clinical differentiation.
  • The combined product’s financial health depends on resisting component-level substitution through formulary lock and maintaining consistent distribution.

FAQs

1) What most directly drives unit demand for fentanyl citrate and droperidol injectables?
Perioperative and procedural sedation volume in hospitals where anesthesia protocols include droperidol-compatible workflows.

2) Why does droperidol materially affect market share economics?
Safety-driven monitoring requirements and patient eligibility exclusions can reduce use frequency and slow formulary adoption relative to less operationally constrained alternatives.

3) How does generic competition typically change the revenue curve?
It compresses net price via tender and discounting while enabling component substitution, leading to flatter-to-down revenue after exclusivity.

4) What operational factors can temporarily boost sales even in a mature market?
Supply constraints that create allocations can improve realized pricing and stabilize revenue, even if demand cannot be fully satisfied.

5) What KPIs are most useful for tracking near-term financial performance?
Net sales vs. shipments (pricing compression), gross-to-net ratio changes, wholesaler fill rates, and contract-driven formulary share shifts.


References

[1] U.S. Food and Drug Administration (FDA). Drug Safety Communications and related QT prolongation information for droperidol. FDA website.
[2] FDA. Product labeling information for fentanyl citrate and droperidol (as applicable by marketed products). FDA Drug Labels database.
[3] World Health Organization (WHO). Anatomical Therapeutic Chemical (ATC) classification and utilization context for opioids and antiemetic/adjunct agents. WHO ATC/DDD index.

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