Last Updated: June 8, 2026

CALAN Drug Patent Profile


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Which patents cover Calan, and what generic alternatives are available?

Calan is a drug marketed by Gd Searle Llc and Pfizer and is included in three NDAs.

The generic ingredient in CALAN is verapamil hydrochloride. There are seventeen drug master file entries for this compound. Forty-five suppliers are listed for this compound. Additional details are available on the verapamil hydrochloride profile page.

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Questions you can ask:
  • What is the 5 year forecast for CALAN?
  • What are the global sales for CALAN?
  • What is Average Wholesale Price for CALAN?

US Patents and Regulatory Information for CALAN

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Exclusivity Expiration
Gd Searle Llc CALAN verapamil hydrochloride INJECTABLE;INJECTION 019038-001 Mar 30, 1984 DISCN No No ⤷  Start Trial ⤷  Start Trial ⤷  Start Trial
Pfizer CALAN SR verapamil hydrochloride TABLET, EXTENDED RELEASE;ORAL 019152-002 Dec 15, 1989 DISCN Yes No ⤷  Start Trial ⤷  Start Trial ⤷  Start Trial
Pfizer CALAN verapamil hydrochloride TABLET;ORAL 018817-002 Sep 10, 1984 DISCN Yes 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

Market Dynamics and Financial Trajectory for CALAN (Verapamil)

Last updated: February 20, 2026

What are CALAN's current market fundamentals?

CALAN (verapamil) is an established calcium channel blocker used primarily for hypertension, angina, and certain arrhythmias. It remained a significant therapeutic option despite competition from newer agents. The drug’s patent expired decades ago, making it a generic product with steady but limited growth potential.

Market Size and Revenue Overview

  • Global sales of verapamil-based formulations, including CALAN, were approximately $500 million in 2022.
  • The U.S. remains the largest market, accounting for around 40% of global sales.
  • Sales are historically stable but have seen gradual declines due to the uptake of newer antihypertensives such as ACE inhibitors and ARBs.

Key Suppliers and Patent Status

  • CALAN is off patent since the late 1980s.
  • Major manufacturers include Pfizer, Teva, Mylan, and local generics producers.
  • No recent patent litigation or exclusivity extensions influence market behavior.

How do market dynamics influence CALAN’s sales?

Competition from Generic Formulations

  • Wide availability leads to price erosion.
  • Prices of generic verapamil formulations declined by approximately 20% over the past five years.
  • Price competition limits profit margins for branded CALAN products.

Prescribing Trends and Clinical Guidelines

  • SHIFT toward newer therapies has marginally reduced CALAN prescriptions.
  • Clinical guidelines still list verapamil as a first- or second-line treatment for certain indications but prefer newer agents for some conditions.
  • Long-term clinical trials showing efficacy and safety support continued use.

Regulatory Landscape

  • No recent regulatory barriers or restrictions affecting CALAN sales.
  • Cost-effective status in various health systems sustains demand.

Reimbursement Policies

  • Medicare and Medicaid reimbursements favor generic prescriptions.
  • Managed care organizations favor cost-effective therapies, prioritizing generics over branded drugs.

What is CALAN’s financial trajectory?

Historical Performance

Year Global Sales (USD millions) Growth vs. Previous Year
2018 550 1.8%
2019 530 -3.6%
2020 520 -1.9%
2021 510 -1.9%
2022 500 -2.0%

Sales exhibit a slight decline driven by generic pricing pressures and declining prescriber preference.

Future Outlook

  • Projected compound annual decline rate: approximately 2% through 2027, driven by ongoing generic competition.
  • Limited opportunities for reformulation or new indications, constraining revenue growth.
  • No major pipeline developments or regulatory incentives for CALAN-specific formulations.

Potential Growth Opportunities

  • Narrowed focus on niche indications, such as specific arrhythmic conditions.
  • Regional markets with less generic penetration might sustain marginal growth.
  • Cost-saving measures in healthcare could redress some prescription volume if prescribers favor older, affordable drugs.

How do emerging market trends impact CALAN?

Rising Use of Newer Agents

  • ACE inhibitors, ARBs, and newer calcium channel blockers (e.g., amlodipine).
  • These agents are prescribed more frequently due to perceived superior safety profiles or easier dosing.

Biosimilar and Alternative Therapies

  • Biologics and novel small molecules targeting hypertension and arrhythmias gain market share, although CALAN remains relatively unaffected in these classes.

Regulatory and Reimbursement Variations

  • Some low/middle-income regions retain high prescription rates for generics like CALAN due to affordability.
  • Reimbursement policies in developed countries strongly favor generics.

Summarized Market and Financial Outlook

Aspect Key Point
Market size Stable but declining; ~$500M in 2022
Growth trend Approximate decline of 2% annually through 2027
Competitive landscape Price competition from generics dominates
Revenue drivers Steady demand for established therapies in niche indications
Future opportunities Minimal; limited pipeline or innovation potential

Key Takeaways

  • CALAN remains a stable, low-growth product primarily due to its status as a generic.
  • Price erosion and evolving prescribing patterns suppress revenue potential.
  • No significant recent patent protections or regulatory barriers.
  • Growth prospects are constrained; regional and niche markets offer limited opportunities.
  • The overall market trajectory suggests gradual decline aligned with increased competition and newer therapeutic options.

FAQs

1. Will CALAN regain market share against newer drugs?
No. Prescriber preference shifts toward newer therapies with improved safety and dosing profiles limit CALAN’s competitive rebound.

2. Are there any recent patent or exclusivity rights that could influence sales?
No. CALAN’s patents expired in the late 1980s; current sales depend on generics.

3. What regions offer potential growth for CALAN?
Regions with limited access to newer drugs and healthcare reimbursement favoring cost-effective generics may sustain modest demand.

4. Can reformulation or new indications improve CALAN’s outlook?
Limited; the drug’s established profile and lack of pipeline developments constrain growth opportunities.

5. How do healthcare policy changes affect CALAN?
Policies favoring generics and cost-efficient care support stable but declining sales; policy shifts toward newer agents could accelerate decline.


References

[1] Evaluate Pharma. (2022). "Global pharmaceutical sales report."
[2] IQVIA. (2022). "Medicine use and spending in the U.S."
[3] U.S. Food and Drug Administration. (2023). "Drug patent information."

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