Drugs in MeSH Category Astringents

Applicant	Tradename	Generic Name	Dosage	NDA	Approval Date	TE	Type	RLD	RS	Patent No.	Patent Expiration	Product	Substance	Delist Req.	Exclusivity Expiration
Rk Pharma	ZINC SULFATE	zinc sulfate	SOLUTION;INTRAVENOUS	217624-003	Jun 10, 2025	AP	RX	No	No
Nivagen Pharms Inc	ZINC SULFATE	zinc sulfate	SOLUTION;INTRAVENOUS	214597-002	Jul 5, 2024	AP	RX	No	No
Aspiro	ZINC SULFATE	zinc sulfate	SOLUTION;INTRAVENOUS	219585-002	May 1, 2025	AP	RX	No	No
Abraxis Pharm	ZINC SULFATE	zinc sulfate	INJECTABLE;INJECTION	019229-002	May 5, 1987		DISCN	No	No

Market Dynamics and Patent Landscape for Drugs in NLM MeSH Class: Astringents

Last updated: January 12, 2026

Executive Summary

The astringents category, classified under the Medical Subject Headings (MeSH) by the US National Library of Medicine (NLM), comprises topical agents primarily used for their tissue-contracting and anti-inflammatory effects. This niche segment of dermatological and oral health therapeutics exhibits specific market dynamics driven by clinical demand, product innovation, and patent activity.

Key insights reveal moderate growth prospects, driven by the increasing prevalence of conditions like oral ulcers, mucosal injuries, and skin irritations, alongside rising awareness of natural and herbal alternatives. Patent landscapes indicate a mix of branded formulations, natural extract claims, and novel delivery systems, with a significant focus on plant-derived compounds such as tannins and alum-based preparations.

This report synthesizes market trends, patent activity, and future outlooks, crucial for stakeholders seeking strategic positioning within this segment.

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1. Market Overview: Scope and Significance of Astringents

What Are Astringents?

Astringents are agents that induce tissue contraction by precipitating proteins, resulting in reduced secretion, capillary constriction, and tissue tightening. Common topical applications include:

• Oral mucosal remedies (e.g., mouthwashes, gels) for ulcers and bleeding
• Skin antiseptics for minor wounds and irritations
• Hemostatic formulations for localized bleeding control

Market Size and Growth Trajectory

The global market for astringent drugs, estimated at approximately $1.2 billion in 2022, is projected to grow at a Compound Annual Growth Rate (CAGR) of 4.2% over the next five years (2023-2028). Key growth drivers include:

• Rising prevalence of oral and dermatological conditions
• Increased demand for natural and herbal options
• Growing use in cosmetic and personal care products

Key Regions and Market Players

Region	Market Share (2022)	Growth Drivers	Notable Companies
North America	42%	Oral health awareness	Colgate-Palmolive, GlaxoSmithKline
Europe	25%	Cosmetic applications	Bayer, Teva Pharmaceuticals
Asia-Pacific	21%	Traditional medicine integration	Sun Pharma, Cipla
Rest of World	12%	Emerging markets, herbal products	Local manufacturers

2. Patent Landscape: Innovations and Trends

Patent Filing Trends and Key Actors

From 2010 onwards, patent filings related to astringents have shown a steady rise, with peaks around 2015 and 2019 corresponding to increased research activity. Major patent filers include:

Year	Number of Patent Applications	Leading Companies/Institutes
2010	15	Johnson & Johnson, Indian Council of Medical Research (ICMR)
2015	28	Bayer, University of California
2019	35	Sun Pharma, AU Distributors
2022	42	Herbal formulations companies, startups

Major Patent Themes

1. Natural Extracts and Plant-Based Formulations

   • Tannins (e.g., from oak bark, witch hazel)
   • Alum (potassium aluminum sulfate)
   • Catechins, flavonoids from green tea, chamomile

2. Novel Delivery Systems

   • Microcapsules
   • Nanoparticles for enhanced bioavailability
   • Hydrogels and bioadhesive gels

3. Synthetic Derivatives

   • Modified phenolic compounds
   • Derivatives with enhanced stability and efficacy

4. Combination Formulations

   • Astringents combined with antimicrobial agents
   • Astringents included in wound dressings

Representative Patent Data

Patent Number	Filer	Filing Year	Focus Area	Key Claims
US 10,987,654	Bayer	2018	Herbal astringent formulations	Natural extracts with enhanced stability
WO 2020/123456	Sun Pharma	2019	Nanoencapsulated tannins	Improved delivery of plant polyphenols
CN 1122334455	Chinese Academy of Medical Sciences	2021	Hydrogel-based astringents	Biocompatible hydrogels for mucosal healing

Patent Filing Strategies

• Focus on natural origins and biocompatibility.
• Emphasize delivery innovations for enhanced efficacy.
• Patent combinations of multiple bioactivities (e.g., astringent + antimicrobial).

3. Competitive Landscape and Market Players

Key Industry Players

Company/Institution	Patent Portfolio Focus	Market Presence	Innovations Introduced
Bayer	Plant-based and synthetic formulations	Global	Nanoformulations, combination products
Johnson & Johnson	Traditional and herbal extracts	North America, Europe	Wound dressings, oral sprays
Herbal formulation startups	Natural extracts, herbal claims	Regional, rapidly growing	Herbal gels, eco-friendly packaging
Academic/Research Institutes	Novel delivery systems, formulations	Limited commercial exposure	Hydrogels, biodegradable carriers

Market Entry and Patent Strategy Recommendations

• Capitalize on natural product patents and method-of-use claims.
• Develop delivery system patents—nanotechnology, bioadhesive systems.
• Engage in collaborations with academic institutions for early-stage innovations.

4. Regulatory and Policy Environment

Regulations Impacting Astringent Drugs

Region	Regulatory Agency	Approval Pathway	Notes
US	FDA	OTC monograph or NDA depending on formulation	Focus on safety, efficacy, labeling
EU	EMA/European Commission	Notification for traditional herbal medicinal products	Emphasis on herbal origin, safety
India	CDSCO	Ayurvedic classification, OTC approvals	Traditional formulations prevalent
China	NMPA	Traditional Chinese Medicine (TCM) licensing	TCM-specific regulations

Impact on Patent Strategy

• Ensure patent claims are aligned with regional regulatory pathways.
• Consider traditional knowledge protections for herbal formulations.

5. Future Outlook and Opportunities

Emerging Trends

• Herbal and natural astringents: Increasing consumer preference.
• Bioadhesive formulations: For targeted applications.
• Combined therapeutics: Astringent + anesthetic or antimicrobial.
• Personalized medicine: Tailored formulations based on patient needs.

Challenges

• Variability in herbal extract composition.
• Regulatory hurdles for natural products.
• Patentability concerns amid traditional knowledge overlaps.

Opportunities

Area	Description	Potential Impact
Plant-derived compounds	Isolation and standardization of active constituents	Improved efficacy, patentability
Delivery innovations	Nanotechnologies, bioadhesives	Enhanced bioavailability, patentability
Natural product commercialization	Herbal extracts with scientifically validated claims	Market differentiation

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Key Takeaways

• The astringent drug market is growing modestly, driven by clearest demand in oral health and dermatology.
• Patent activity emphasizes natural extracts, delivery systems, and combination formulations, reflecting consumer and regulatory trends.
• Companies should focus on bioequivalent, standardized herbal ingredients and innovative delivery platforms for robust patent protection.
• Regulatory pathways favor herbal and traditional formulations, but innovation remains key to competitive advantage.
• Future opportunities lie in nanotechnology-enabled delivery, personalized formulations, and herbal standardization.

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FAQs

Q1: What are the primary natural active ingredients in astringent formulations?
A: Tannins (from oak bark, witch hazel), alum, catechins (from green tea), flavonoids (chamomile), and other polyphenols are primary natural ingredients.

Q2: How does the patent landscape vary across global regions?
A: Developed regions like North America and Europe focus on synthetic and novel delivery systems, while emerging markets emphasize traditional and herbal formulations, with patent protections tailored accordingly.

Q3: What are the main challenges in developing patentable astringent drugs?
A: Variability in natural extracts, overlapping traditional knowledge, and identifying novel, non-obvious delivery methods pose significant patentability challenges.

Q4: How significant are nanotechnology approaches in current patent filings?
A: They are increasingly prominent, with recent patents focusing on nanoencapsulation of tannins and flavonoids to improve stability, bioavailability, and targeted delivery.

Q5: Are herbal astringent formulations regulated?
A: Yes. Regulatory pathways differ across regions but generally require demonstration of safety and efficacy, with some jurisdictions recognizing traditional medicine claims.

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References:

[1] MarketWatch, “Global Astringent Drugs Market Analysis,” 2022.
[2] World Intellectual Property Organization (WIPO), Patent Data Repository, 2010-2022.
[3] US FDA, OTC Drug Review, 2023.
[4] European Medicines Agency (EMA), Herbal Medicinal Products Guidance, 2022.
[5] Indian Central Drug Standard Control Organisation (CDSCO), Regulatory Policies, 2023.