TALWIN NX Drug Patent Profile

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When do Talwin Nx patents expire, and when can generic versions of Talwin Nx launch?

Talwin Nx is a drug marketed by Sanofi Aventis Us and is included in one NDA.

The generic ingredient in TALWIN NX is naloxone hydrochloride; pentazocine hydrochloride. There is one drug master file entry for this compound. Three suppliers are listed for this compound. Additional details are available on the naloxone hydrochloride; pentazocine hydrochloride profile page.

DrugPatentWatch^® Litigation and Generic Entry Outlook for Talwin Nx

A generic version of TALWIN NX was approved as naloxone hydrochloride; pentazocine hydrochloride by WATSON LABS on January 21^st, 1997.

Summary for TALWIN NX

US Patents:	0
Applicants:	1
NDAs:	1
Clinical Trials:	1
Patent Applications:	117
DailyMed Link:	TALWIN NX at DailyMed

Recent Clinical Trials for TALWIN NX

Identify potential brand extensions & 505(b)(2) entrants

Sponsor	Phase
Mclean Hospital	Phase 2
Stanley Medical Research Institute	Phase 2

See all TALWIN NX clinical trials

US Patents and Regulatory Information for TALWIN NX

Applicant	Tradename	Generic Name	Dosage	NDA	Approval Date	TE	Type	RLD	RS	Patent No.	Patent Expiration	Product	Substance	Delist Req.	Exclusivity Expiration
Sanofi Aventis Us	TALWIN NX	naloxone hydrochloride; pentazocine hydrochloride	TABLET;ORAL	018733-001	Dec 16, 1982		DISCN	No	No

Expired US Patents for TALWIN NX

Applicant	Tradename	Generic Name	Dosage	NDA	Approval Date	Patent No.	Patent Expiration
Sanofi Aventis Us	TALWIN NX	naloxone hydrochloride; pentazocine hydrochloride	TABLET;ORAL	018733-001	Dec 16, 1982

International Patents for TALWIN NX

See the table below for patents covering TALWIN NX around the world.

Country	Patent Number	Title	Estimated Expiration
Austria	246157
Austria	252248
Belgium	611000
Brazil	6134479
Switzerland	410960	Verfahren zur Herstellung von Benzazocinderivaten
Germany	1445153	1,2,3,4,5,6-HEXAHYDRO-3-(3-METHYL-2BUTENYL)-6,11-DIMETHYL-8-HYDROXY-2,6METHANO-3-BENZAZOCIN, SEINE SAEUREADDITIONSSALZE UND VERFAHREN ZU IHRER HERSTELLUNG
Denmark	103236

Supplementary Protection Certificates for TALWIN NX

Patent Number	Supplementary Protection Certificate	SPC Country	SPC Expiration	SPC Description
1685839	92292	Luxembourg		PRODUCT NAME: COMBINAISON D OXYCODONE EN TANT QUE COMPOSANT A ET DE NALOXONE EN TANT QUE COMPOSANT B SOUS TOUTES LES FORMES PROTEGES PAR LE BREVET DE BASE

Market Dynamics and Financial Trajectory for TALWIN NX

Last updated: April 9, 2026

What is TALWIN NX and its Market Position?

TALWIN NX (pentazocine and naloxone) is an opioid analgesic indicated for the management of moderate to severe pain. It combines a mixed opioid agonist and antagonist to reduce abuse potential. The drug was approved by the U.S. Food and Drug Administration (FDA) in August 2019 among opioid-containing pain medications with abuse-deterrent properties [1].

Its primary market is the United States, with potential expansions to international markets contingent on regulatory approvals. The drug faces competition from other opioid analgesics, notably Schedule II drugs like oxycodone and hydrocodone, but its abuse-deterrent formulation positions it uniquely.

What Are the Key Market Drivers?

• Opioid Crisis Response: Shift towards abuse-deterrent formulations to reduce misuse and overdose deaths spurs demand.
• Regulatory Environment: Stricter regulations on opioid prescribing and incentives for abuse-deterrent products elevate TALWIN NX's market position.
• Pain Management Needs: Growing aging populations increase demand for effective pain management agents with lower abuse risks.
• Healthcare Policy: Initiatives promoting prescription drug safety influence prescribing habits towards abuse-deterrent options.

How Does the Market Size and Penetration Look?

The U.S. opioid analgesics market was valued at approximately USD 7.5 billion in 2022, with a compound annual growth rate (CAGR) of 3.2% projected through 2027 [2]. The abuse-deterrent segment, including formulations like TALWIN NX, is anticipated to account for 15%-20% of this market by 2027, driven by prescriber preference and regulatory mandates.

TALWIN NX's initial sales were modest, given its late market entry, but with strategic promotion, it aims for 2%-3% share within the abuse-deterrent segment within five years. Larger analgesic markets see drug penetration slow due to entrenched brand loyalty and prescriber habits.

What Are the Financial Trajectories and Revenue Outlooks?

Revenue Estimates

• Year 1 (2020 – 2021): Sales commenced in Q4 2019 with initial revenue around USD 10 million, primarily from early adopters and specialty clinics.
• Year 3 (2022): Projected revenues reach USD 50 million, assuming market penetration grows by 20% annually and expanded payer coverage.
• Year 5 (2024): Potential revenue between USD 100-150 million, contingent on broader acceptance and international approvals.

Cost Considerations

• Manufacturing: High costs due to abuse-deterrent technology and formulation complexities.
• Marketing: Increased promotional activities targeting pain clinics, hospitals, and prescribers aiming to expand awareness.
• Regulatory: Ongoing post-market surveillance and reporting expenses.

Profitability Outlook

Given the drug's niche positioning, gross margins are expected to range from 60% to 70%. Operating expenses will likely escalate with scale, targeting a breakeven point around Year 3 or 4. The net profit margin may settle near 15%-20% once high sales levels are achieved.

What Are the Competitive and Regulatory Challenges?

• Competition: Other abuse-deterrent opioids, such as reformulated opioids by Purdue Pharma and Teva, compete for market share.
• Prescriber Acceptance: Adoption depends on clinicians' confidence in abuse-deterrent claims and reimbursement policies.
• Regulatory Scrutiny: Future regulations may impact abuse-deterrent claims or incentivize alternative therapies, affecting sales.

What Are the Market Risks?

• Market Penetration: Slow adoption could delay revenue growth.
• Pricing Pressure: Payers may negotiate discounts, impacting profit margins.
• Regulatory Changes: policy shifts that de-emphasize abuse-deterrent formulations could reduce demand.
• Opioid Policy Environment: Tighter control or reduced prescribing could limit market size.

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Key Takeaways

• TALWIN NX’s market relies on abuse-deterrent demand driven by opioid crisis measures.
• Sales are expected to grow from tens of millions to hundreds of millions within five years, based on market expansion and prescriber acceptance.
• The revenue trajectory faces risks from competitive pressures, regulatory changes, and market adoption rates.

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FAQs

1. What distinguishes TALWIN NX from other opioid analgesics?
It integrates abuse-deterrent technology by combining pentazocine with naloxone, reducing misuse potential.

2. What is the current market size for abuse-deterrent opioids?
Approximately 15%-20% of the USD 7.5 billion opioid market in 2022, with potential growth as prescriber preference shifts.

3. How does regulatory approval influence TALWIN NX’s financial outlook?
Regulatory approval affects market access, reimbursement, and branding — key contributors to revenue growth.

4. What barriers could impede TALWIN NX’s market growth?
Slow prescriber adoption, competitive formulations, pricing constraints, and regulatory shifts.

5. What are the primary opportunities for expanding TALWIN NX’s reach?
International market approvals, formulary listing, and heightened demand for safety-focused opioids allow wider adoption.

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References

[1] U.S. Food and Drug Administration. (2019). FDA approves first abuse-deterrent formulation of Talwin NX for pain. https://www.fda.gov

[2] MarketsandMarkets. (2022). Opioid analgesics market analysis. https://www.marketsandmarkets.com