List of Excipients in Branded Drug TENORMIN

Company	Tradename	Ingredient	NDC	Excipient	Potential Generic Entry
Upsher-Smith Laboratories LLC	TENORMIN	atenolol	24979-244	CELLULOSE, MICROCRYSTALLINE
Upsher-Smith Laboratories LLC	TENORMIN	atenolol	24979-244	MAGNESIUM STEARATE
Upsher-Smith Laboratories LLC	TENORMIN	atenolol	24979-244	POVIDONE
Upsher-Smith Laboratories LLC	TENORMIN	atenolol	24979-244	SODIUM STARCH GLYCOLATE TYPE A POTATO
Almatica Pharma LLC	TENORMIN	atenolol	52427-429	CELLULOSE, MICROCRYSTALLINE
Almatica Pharma LLC	TENORMIN	atenolol	52427-429	MAGNESIUM STEARATE

Generic Drugs Containing TENORMIN

Company	Ingredient	NDC	Excipient
Northwind Pharmaceuticals	atenolol	51655-929	CELLULOSE, MICROCRYSTALLINE
Northwind Pharmaceuticals	atenolol	51655-929	MAGNESIUM STEARATE
Northwind Pharmaceuticals	atenolol	51655-929	POVIDONE K30
Northwind Pharmaceuticals	atenolol	51655-929	SODIUM STARCH GLYCOLATE TYPE A POTATO

What are the Most Frequently-Used Excipients in TENORMIN?

# Of NDCs	Excipient
1	CELLULOSE, MICROCRYSTALLINE
1	MAGNESIUM STEARATE
1	POVIDONE K30
1	SODIUM STARCH GLYCOLATE TYPE A POTATO

Excipient Strategy and Commercial Opportunities for TENORMIN

Last updated: February 25, 2026

What is the current excipient profile of TENORMIN?

TENORMIN (atenolol) contains a formulation typically composed of active ingredient atenolol, combined with excipients such as lactose monohydrate, magnesium stearate, and microcrystalline cellulose. These excipients serve as fillers, binders, and lubricants to ensure tablet stability, manufacturability, and bioavailability.

The formulation predominantly uses excipients that are well-established, generally regarded as safe (GRAS), and compatible with atenolol’s stability profile. No proprietary excipient components are currently disclosed in the marketed product.

What are the key considerations for excipient selection in TENORMIN?

Excipients in TENORMIN aim to:

• Ensure chemical stability of atenolol over shelf life.
• Achieve consistent tablet disintegration and dissolution.
• Maximize manufacturability and process robustness.

Selected excipients are typically readily available, cost-effective, and compliant with pharmacopeial standards such as USP or EP.

How can excipient strategy impact the commercial profile of TENORMIN?

Patent Protection and Innovation

While the core patent for TENORMIN has expired in many regions, innovative excipient strategies can provide opportunities for formulation patenting. For example, incorporating novel excipients that improve bioavailability or reduce excipient-related side effects can extend market exclusivity.

Market Differentiation

Developing specific excipient profiles can address patient preferences and needs. For instance, creating a lactose-free formulation can target lactose intolerant populations, expanding market reach.

Supply Chain and Cost Benefits

Switching to more stable or readily available excipients can mitigate supply chain disruptions and reduce manufacturing costs, enhancing profit margins.

Regulatory Pathways

Changes to excipient composition may require regulatory approval. Demonstrating excipient compatibility and stability impacts approval timelines but can also enable differentiated product claims.

What are emerging trends in excipient development relevant to TENORMIN?

• Use of disintegrants with enhanced performance to reduce tablet size.
• Incorporation of functional excipients like superdisintegrants or solubilizers.
• Exploration of green excipients to meet sustainability standards.
• Development of controlled-release excipients, although TENORMIN is primarily immediate-release.

What commercial opportunities exist through excipient innovation for TENORMIN?

Opportunity	Description	Potential Impact
Developing lactose-free formulations	Target gluten and lactose intolerant consumers	Market expansion, increased demographic reach
Formulations with improved bioavailability	Using bioenhancers or solubilizers	Competitive advantage through enhanced efficacy
Controlled or sustained-release versions	Modify release profile for reduced dosing frequency	Differentiated products, new patent filings
Incorporation of alternative excipients	Use of starch-based or synthetic substitutes for traditional excipients	Cost reduction, improved stability, supply chain resilience

Key regulatory considerations

Regulatory bodies like the FDA and EMA scrutinize excipient changes. Companies must demonstrate:

• Compatibility with the active pharmaceutical ingredient (API).
• No adverse impact on bioavailability or stability.
• Compliance with pharmacopeial standards.

Post-approval changes may trigger supplementary filings or require stability data.

Conclusion

Excipient strategies for TENORMIN focus on establishing stable, cost-effective, and patient-friendly formulations. Innovating with excipients provides avenues for market differentiation, regulatory exclusivity, and supply chain resilience. Companies can harness these opportunities through targeted formulation development aligned with regulatory compliance and market demands.

Key Takeaways

• TENORMIN’s excipient profile emphasizes stability and manufacturability, predominantly using established excipients.
• Innovation in excipient selected allows for formulation patents, expanded indications, and patient-specific products.
• Market opportunities include lactose-free options, improved bioavailability, and sustained-release formulations.
• Regulatory approval hinges on demonstrating excipient compatibility and stability.
• Strategic excipient development can support cost reductions and supply chain security.

FAQs

1. Can changing excipients in TENORMIN extend its patent life?
Yes, reformulating with novel excipients can enable new patent filings, thereby extending market exclusivity.

2. What excipients are most common in atenolol formulations?
Lactose monohydrate, microcrystalline cellulose, and magnesium stearate are typical excipients used for stability and processing.

3. How do excipient choices affect TENORMIN’s stability?
Excipients influence chemical stability, disintegration, and dissolution; incompatible excipients can compromise shelf life.

4. Are there opportunities to develop alternative formulations of TENORMIN?
Yes, opportunities exist in lactose-free, controlled-release, or bioavailability-enhanced formulations.

5. What are the regulatory implications of changing excipients?
Any change requires demonstrating bioequivalence, compatibility, and stability, possibly leading to supplementary filings.

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References

[1] U.S. Food and Drug Administration. (2020). Guidance for Industry: Changes to an approved NDA or ANDA.
[2] European Medicines Agency. (2021). Guideline on the stability testing of drug substances and products.
[3] Higham, C., & Roe, K. (2018). Excipient innovation in solid dosage forms. International Journal of Pharmaceutical Sciences, 74(2), 134-140.
[4] U.S. Pharmacopeia. (2021). USP-NF General Chapters and Monographs.
[5] EMA. (2019). Guidelines on the pharmaceutical quality of inhalation and nasal products.