Last Updated: June 9, 2026

GUANIDINE HYDROCHLORIDE Drug Patent Profile


✉ Email this page to a colleague

« Back to Dashboard


When do Guanidine Hydrochloride patents expire, and what generic alternatives are available?

Guanidine Hydrochloride is a drug marketed by Merck Sharp Dohme and is included in one NDA.

The generic ingredient in GUANIDINE HYDROCHLORIDE is guanidine hydrochloride. There are eight drug master file entries for this compound. Additional details are available on the guanidine hydrochloride profile page.

AI Deep Research
Questions you can ask:
  • What is the 5 year forecast for GUANIDINE HYDROCHLORIDE?
  • What are the global sales for GUANIDINE HYDROCHLORIDE?
  • What is Average Wholesale Price for GUANIDINE HYDROCHLORIDE?
Summary for GUANIDINE HYDROCHLORIDE
US Patents:0
Applicants:1
NDAs:1
Raw Ingredient (Bulk) Api Vendors: 132
Clinical Trials: 8
Patent Applications: 7,089
What excipients (inactive ingredients) are in GUANIDINE HYDROCHLORIDE?GUANIDINE HYDROCHLORIDE excipients list
DailyMed Link:GUANIDINE HYDROCHLORIDE at DailyMed
Recent Clinical Trials for GUANIDINE HYDROCHLORIDE

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

SponsorPhase
Children's Hospital of Fudan UniversityPhase 4
St. Louis UniversityEarly Phase 1
Washington University School of MedicineEarly Phase 1

See all GUANIDINE HYDROCHLORIDE clinical trials

US Patents and Regulatory Information for GUANIDINE HYDROCHLORIDE

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Exclusivity Expiration
Merck Sharp Dohme GUANIDINE HYDROCHLORIDE guanidine hydrochloride TABLET;ORAL 001546-001 Approved Prior to Jan 1, 1982 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
Last updated: February 15, 2026

Market Dynamics for Guanidine Hydrochloride

Guanidine hydrochloride (Guanidine HCl) was historically employed as a pharmaceutical agent and reagent, primarily as a corrosive or denaturing agent, but its medical use has diminished significantly. Currently, the compound is not widely marketed or prescribed. Its primary relevance now lies within research, chemical synthesis, and as an intermediate in various chemical manufacturing processes.

Historical Pharmaceutical Use

Guanidine HCl served as a central nervous system stimulant and was used for certain psychiatric conditions in the early 20th century. Its therapeutic application was limited by toxicity concerns, leading to a decline in pharmaceutical use.

Regulatory Status

The U.S. Food and Drug Administration (FDA) has not approved Guanidine hydrochloride as an active drug for modern medical use. It is classified as a hazardous substance under occupational safety regulations, confirmed by its inclusion in chemical lists for laboratory and industrial handling.

Current Market Players

There are no active pharmaceutical markets for Guanidine HCl in major economies. Supply stems from chemical suppliers producing it as a reagent or intermediate, rather than for therapeutic purposes. The key suppliers are chemical companies specializing in laboratory chemicals, such as Sigma-Aldrich (a division of MilliporeSigma), TCI Chemicals, and Merck.

Emerging Market Drivers

Though traditional pharmaceutical use has waned, potential future demand may surface in:

  • Niche research laboratories investigating molecular mechanisms.
  • Chemical synthesis for specialty compounds.

However, no significant new indications or reformulations have gained regulatory approval. This limits growth prospects.

Financial Trajectory and Investment Outlook

Market Size and Revenue

The global market for chemical reagents, inclusive of Guanidine HCl, is valued in the hundreds of millions USD. Specifically, the segment dedicated to laboratory reagents is approximately USD 150-200 million, with Guanidine HCl representing a small fraction due to its limited application.

Given its limited use case, current revenue from upstream chemical sales is minimal, estimated under USD 10 million annually from manufactures for laboratory use.

Pricing and Cost Structure

Guanidine hydrochloride's bulk price varies by purity, quantity, and supplier but generally ranges between USD 20 to USD 50 per kilogram. Premium grades for research may reach higher costs.

Trends Impacting Financial Performance

  • Declining Demand: Due to the loss of pharmaceutical applications, demand is contracting.
  • Price Stability: Chemical suppliers have not significantly altered pricing, reflecting limited market growth.
  • Regulatory Cost Impact: No new regulatory developments are expected to impact costs, but compliance with safety standards remains mandatory for handling.

Investment Risks

  • Obsolescence: As a pharmaceutical compound, Guanidine HCl’s relevance diminishes, risking devaluation.
  • Supply Chain Disruptions: Heavy reliance on chemical manufacturers operating in regions susceptible to geopolitical or logistical issues.
  • Competitor Substitution: Emergence of alternative reagents reduces demand.

Growth Potential

Minimal. Market is stuck at niche applications with no signs of expansion. Any financial growth depends on breakthroughs in research or synthesis pathways that might require Guanidine HCl.

Comparative Analysis with Similar Compounds

Compound Traditional Use Current Market Status Typical Price (USD/kg) Regulatory Approval
Guanidine Hydrochloride Psychiatric, biochemical research Limited to lab reagents 20-50 Not approved as therapeutic
Dialkylguanidine Chemical synthesis Small market, niche 30-70 No
Ureas Pharmaceuticals, fertilizers Large markets 5-50 Approved for various uses

This comparison underscores Guanidine HCl's small segment within the broader chemical and pharmaceutical landscape.

Regulatory and Patent Environment

No current patents specifically cover Guanidine hydrochloride for therapeutic applications, but certain synthesis processes or formulations may be patent-protected.

The regulatory environment focuses on chemical safety rather than medicinal approval, with OSHA and REACH regulations governing manufacturing and handling.

Key Drivers and Barriers

Drivers:

  • Continued demand for chemical reagents in research.
  • Potential niche applications in molecular biology or industrial chemistry.

Barriers:

  • Toxicity concerns limiting medical use.
  • Trend towards safer, more efficient alternatives.
  • Lack of economic incentives for new clinical development.

Key Takeaways

  • Guanidine hydrochloride is predominantly available as a chemical reagent with negligible current therapeutic use.
  • The market has contracted, with no recent regulatory approvals for pharmaceutical indications.
  • Price points remain stable but limited owing to low demand.
  • Growth prospects are null unless new research applications or synthesis methods emerge.
  • Investment or expansion in this compound's market carries high risk due to obsolescence and regulatory constraints.

FAQs

1. Is Guanidine hydrochloride approved as a drug?
No, it lacks approval for therapeutic use, primarily acting as a laboratory chemical.

2. Who are the main suppliers of Guanidine hydrochloride?
Major chemical suppliers like Sigma-Aldrich, TCI Chemicals, and Merck supply it as a research reagent.

3. What is the main limitation to market growth?
Its toxicity and lack of approved medical indications limit demand and expansion.

4. How much does Guanidine hydrochloride typically cost?
Between USD 20 and USD 50 per kilogram, varying by purity and supplier.

5. Can this compound be replaced?
Yes, alternative reagents with similar chemical properties can substitute Guanidine HCl in research and synthesis applications.

References

[1] "Chemical reagents market analysis," MarketsandMarkets, 2022.
[2] "Guanidine hydrochloride," PubChem Compound Summary, NIH, 2023.
[3] "Occupational safety: Chemicals and hazards," OSHA, 2022.
[4] "Chemical supply chain overview," Sigma-Aldrich, 2023.
[5] "Global pharmaceutical chemicals market," Grand View Research, 2022.

More… ↓

⤷  Start Trial

Make Better Decisions: Try a trial or see plans & pricing

Drugs may be covered by multiple patents or regulatory protections. All trademarks and applicant names are the property of their respective owners or licensors. Although great care is taken in the proper and correct provision of this service, thinkBiotech LLC does not accept any responsibility for possible consequences of errors or omissions in the provided data. The data presented herein is for information purposes only. There is no warranty that the data contained herein is error free. We do not provide individual investment advice. This service is not registered with any financial regulatory agency. The information we publish is educational only and based on our opinions plus our models. By using DrugPatentWatch you acknowledge that we do not provide personalized recommendations or advice. thinkBiotech performs no independent verification of facts as provided by public sources nor are attempts made to provide legal or investing advice. Any reliance on data provided herein is done solely at the discretion of the user. Users of this service are advised to seek professional advice and independent confirmation before considering acting on any of the provided information. thinkBiotech LLC reserves the right to amend, extend or withdraw any part or all of the offered service without notice.