WINSTROL Drug Patent Profile

Which patents cover Winstrol, and when can generic versions of Winstrol launch?

Winstrol is a drug marketed by Lundbeck Inc and is included in one NDA.

The generic ingredient in WINSTROL is stanozolol. There are two drug master file entries for this compound. Additional details are available on the stanozolol profile page.

Summary for WINSTROL

US Patents:	0
Applicants:	1
NDAs:	1
Raw Ingredient (Bulk) Api Vendors:	42
Patent Applications:	3,220
DailyMed Link:	WINSTROL at DailyMed

US Patents and Regulatory Information for WINSTROL

Applicant	Tradename	Generic Name	Dosage	NDA	Approval Date	TE	Type	RLD	RS	Patent No.	Patent Expiration	Product	Substance	Delist Req.	Exclusivity Expiration
Lundbeck Inc	WINSTROL	stanozolol	TABLET;ORAL	012885-001	May 14, 1984		DISCN	Yes	No

Expired US Patents for WINSTROL

Applicant	Tradename	Generic Name	Dosage	NDA	Approval Date	Patent No.	Patent Expiration
Lundbeck Inc	WINSTROL	stanozolol	TABLET;ORAL	012885-001	May 14, 1984

International Patents for WINSTROL

See the table below for patents covering WINSTROL around the world.

Country	Patent Number	Title	Estimated Expiration
Malaysia	6400099	STEROID COMPOUNDS AND PREPARATION THEREOF
Belgium	577027
Netherlands	100550
Netherlands	237293
Germany	1152101	Verfahren zur Herstellung von mit einem Pyrazolring kondensierten Steroidverbindungen
United Kingdom	911814
Denmark	104732

Market Dynamics and Financial Trajectory for Winstrol (Stanozolol)

Last updated: February 20, 2026

What is Winstrol and how is it positioned in the pharmaceutical market?

Winstrol (generic name: stanozolol) is an anabolic steroid originally developed by Winthrop Laboratories in 1959. It is used for medical indications such as angular stomatitis, hereditary angioedema, and anemia but is more widely known for its off-label use by athletes and bodybuilders to enhance physical performance. Despite its medical approvals, Winstrol is classified as a controlled substance in several markets due to abuse potential.

What are the key market segments for Winstrol?

Pharmaceutical Segment

Preventing anemia and other medical indications, Winstrol's pharmaceutical sales have diminished with the advent of newer therapies. Its medical use persists in some countries but remains marginal compared to past decades.

Illicit Use and Doping Market

The majority of Winstrol demand originates from unregulated markets, primarily used for physique enhancement. This segment influences the drug’s overall market dynamics significantly.

How is global regulation affecting Winstrol's market?

Legal Status

• United States: Classified as a Schedule III controlled substance under the DEA. Illicit possession and distribution are illegal.
• European Union: Controlled under the Anabolic Steroid Control Acts. Restrictions vary by country.
• Asia: Regulation varies; in some countries, Winstrol is available by prescription, but illegal importation and distribution are common.

Impact of Regulation

Stricter regulations reduce legitimate pharmaceutical sales, shift demand toward illicit channels, and impact market transparency and pricing.

What are the key factors influencing Winstrol's market trajectory?

Medical Market Decline

• Development of safer, more effective anabolic agents replaced Winstrol for medical purposes.
• Limited medical prescriptions push revenue downward.

Performance and Bodybuilding Demand

• The drug’s reputation for performance enhancement sustains clandestine demand.
• Market driven by non-regulated channels, with online black markets and underground labs.

Supply Chain Dynamics

• Manufacturing occurs in countries with lax regulations or through illicit laboratories.
• Fake and substandard products pose risks, complicating market analysis.

Price Trends

• Pharmaceutical-grade Winstrol prices have decreased due to competition and regulation.
• Black-market prices vary widely, reflecting purity, source, and market region.

What is the current financial outlook for Winstrol?

Revenue Estimates

• Global pharmaceutical sales are estimated at under $10 million annually, mostly from niche markets.
• The illicit market’s size remains uncertain but is substantially larger, with estimates suggesting billions in annual sales globally.

Market Growth

• The legal pharmaceutical market for Winstrol has been stagnant or shrinking over the past decade.
• The illicit market experiences year-over-year growth, fueled by increasing demand for performance enhancement drugs.

Future Trends

• Stricter enforcement and anti-doping measures could suppress illicit demand.
• Rising health awareness decreases social acceptance and use of anabolic steroids.
• The emergence of legal, safer alternatives may reduce demand further.

How are regulatory developments expected to influence the market?

Increased doping controls and drug testing in sports decrease Winstrol’s popularity among athletes. Legal crackdowns on illicit supply chains constrain both supply and use.

What are key potential opportunities and risks?

Opportunities

• Development of legal, pharmaceutical-grade versions for approved medical indications.
• Expansion into regions with lax regulatory environments.
• Innovations in formulations to improve safety and reduce abuse potential.

Risks

• Stringent regulation limiting legitimate use.
• Market suppression due to health campaigns.
• Competition from newer anabolic agents with improved safety profiles.

Key Takeaways

• Winstrol’s pharmaceutical sales have declined due to increased regulation and competition.
• The market primarily relies on illicit demand, which remains robust despite regulatory efforts.
• Growing public health concerns and doping regulations threaten future market size.
• Supply chain issues, including illegitimate production, complicate market assessment.
• Regulatory developments are expected to continue suppressing legitimate sales while constraining illicit markets.

FAQs

1. Is Winstrol still approved for medical use globally?
Yes, but approvals are limited and declining, with most markets restricting it mainly due to safety concerns.

2. How significant is the illicit market for Winstrol?
It is substantially larger than the pharmaceutical market, with estimates of global annual illicit sales reaching into the billions.

3. What factors influence Winstrol’s black-market price?
Purity, source, geographic region, and current enforcement levels.

4. Are there legal alternatives to Winstrol for performance enhancement?
Yes. Several newer anabolic agents with better safety and efficacy profiles are available legally or via regulated channels.

5. What is the outlook for Winstrol’s market over the next decade?
The market is expected to shrink in medical contexts and face increasing regulatory restrictions, though illicit demand may persist or grow in unregulated sectors.

References

[1] U.S. Drug Enforcement Administration. (2022). Controlled Substances Act.[online] Available at: https://www.deadiversion.usdoj.gov/21cfr/21usc/801.htm
[2] European Monitoring Centre for Drugs and Drug Addiction. (2021). EU Drug Markets Report.[online] Available at: https://www.emcdda.europa.eu/publications/emcdda-publications/eu-drug-markets-report_en
[3] World Anti-Doping Agency. (2023). WADA List of Prohibited Substances and Methods.[online] Available at: https://www.wada-ama.org/en/what-we-do/prohibited-list