Last Updated: May 3, 2026

RESERPINE AND HYDROCHLOROTHIAZIDE-50 Drug Patent Profile


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When do Reserpine And Hydrochlorothiazide-50 patents expire, and when can generic versions of Reserpine And Hydrochlorothiazide-50 launch?

Reserpine And Hydrochlorothiazide-50 is a drug marketed by West Ward and is included in one NDA.

The generic ingredient in RESERPINE AND HYDROCHLOROTHIAZIDE-50 is hydrochlorothiazide; reserpine. There are thirty-two drug master file entries for this compound. Additional details are available on the hydrochlorothiazide; reserpine profile page.

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Summary for RESERPINE AND HYDROCHLOROTHIAZIDE-50
US Patents:0
Applicants:1
NDAs:1

US Patents and Regulatory Information for RESERPINE AND HYDROCHLOROTHIAZIDE-50

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Exclusivity Expiration
West Ward RESERPINE AND HYDROCHLOROTHIAZIDE-50 hydrochlorothiazide; reserpine TABLET;ORAL 088189-001 May 10, 1984 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

Investment and Fundamentals Analysis for Reserpine and Hydrochlorothiazide-50

Last updated: February 19, 2026

Market Overview and Product Details

Reserpine and Hydrochlorothiazide-50 combine two antihypertensive agents: reserpine and hydrochlorothiazide at a 50 mg dosage. Reserpine, historically used for hypertension and psychiatric conditions, has seen declining use due to side effect profiles. Hydrochlorothiazide remains a first-line diuretic in hypertension management.

Regulatory status: Reserpine is approved for specific indications. Hydrochlorothiazide holds broader approval globally, with multiple formulations. The combination's regulatory approval depends on regional authorities' review of safety and efficacy data.

Market size: The global antihypertensive drugs market was valued at approximately USD 50 billion in 2021, projected to reach USD 70 billion by 2027 with a CAGR of 5.4%. Diuretics constitute about 20% of the market, approximately USD 10 billion in 2021.

Pricing and patent landscape: Reserpine and hydrochlorothiazide are off-patent generics, with low manufacturing costs. The combination's price varies regionally, generally between USD 0.05 and 0.20 per tablet.

Competitive Landscape and Patent Considerations

Generic dominance: Several pharmaceutical companies produce hydrochlorothiazide and reserpine separately. Fixed-dose combinations (FDCs) are available, but market penetration is limited.

Patent expiry: The active ingredients' patents expired decades ago. No current patents cover the combination, creating an environment for generic competition.

Regulatory barriers: Regulatory approval for combination pills may involve additional clinical trial requirements, affecting time to market and cost.

Clinical and Safety Profile

Efficacy: Both agents effectively reduce blood pressure independently. Combination therapy can enhance adherence and synergize effects.

Side effects: Reserpine carries risks of depression, nasal congestion, and gastrointestinal disturbances. Hydrochlorothiazide may cause electrolyte imbalance, dehydration, and gout.

Patient population: Due to side effect profiles, use of this combination may be limited in the era of newer agents with improved safety profiles.

Investment Considerations

Aspect Analysis
Market Demand Stable demand within hypertensive populations. Limited by side effects.
Competitive Advantage Limited if focused solely on this combination due to generics and safety concerns. Entry barriers exist in regulatory approval.
Cost of Production Low, generic manufacturing costs favor high margins if marketing is strategic.
Regulatory Environment Generally favorable for generics; however, approval for new FDCs may require clinical data.
Market Trends Shift towards newer antihypertensives with better safety and tolerability profiles.

Financial Outlook

Expected revenue is constrained by:

  • The declining usage of reserpine.
  • Established presence of low-cost generic competitors.
  • Limited clinical advantage over existing therapies.

Potential high-margin opportunities are primarily in developing regions with less access to newer medications, though price sensitivity and regulatory hurdles persist.

Strategic Recommendations

  1. Focus on regions with limited access to newer antihypertensives where existing generics are used predominantly.
  2. Develop a novel formulation with improved safety profiles to differentiate from existing treatments.
  3. Investigate patent landscape for potential opportunities or hurdles in combination formulations.
  4. Assess market demand for FDCs in targeted regions through detailed epidemiological research.

Key Takeaways

  • Reserpine and hydrochlorothiazide-50 are off-patent, low-cost generic drugs with limited current market growth prospects.
  • The phase-out of reserpine due to safety concerns diminishes the attractiveness of investing in this combination.
  • Regulatory approval may be straightforward for generics but challenging for novel combination formulations.
  • The market is crowded, dominated by established generics, with limited premium pricing potential.
  • Emerging markets may still hold opportunities, provided regulatory and clinical hurdles are addressed.

FAQs

1. Is investing in reserpine and hydrochlorothiazide-50 viable today?
It faces limited growth given safety concerns and strong generic competition. Viability depends on regional demand and the ability to differentiate through formulation or new indications.

2. What are regulatory challenges in developing this combination?
Regulatory authorities may require clinical data demonstrating safety and efficacy for the fixed-dose combination, especially if it differs significantly from existing products.

3. Are there safety issues that could impact marketability?
Yes, reserpine's side effect profile limits its usage. New formulations need to mitigate these issues to improve acceptance.

4. Could geographic markets influence investment outcomes?
Emerging markets with less access to newer drugs represent potential demand, but regulatory and pricing constraints may limit margins.

5. What alternative strategies exist for antihypertensive drugs?
Investing in newer agents with better safety profiles or innovative delivery methods, such as sustained-release formulations, could yield higher returns.


References

[1] Statista. (2022). Global hypertensive pharmaceuticals market size. https://statista.com
[2] MarketsandMarkets. (2022). Antihypertensive drugs market by drug class. https://marketsandmarkets.com
[3] U.S. Food and Drug Administration. (2021). Guidance for combination drugs. https://fda.gov
[4] World Health Organization. (2020). Hypertension treatment guidelines. https://who.int

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