Suppliers and packagers for timoptic

timoptic

Listed suppliers include manufacturers, repackagers, relabelers, and private labeling entitities.

Applicant	Tradename	Generic Name	Dosage	NDA	NDA/ANDA	Supplier	Package Code	Package	Marketing Start
Bausch And Lomb Inc	TIMOPTIC	timolol maleate	SOLUTION/DROPS;OPHTHALMIC	018086	NDA	Bausch & Lomb Incorporated	24208-812-05	1 BOTTLE, DISPENSING in 1 CARTON (24208-812-05) / 5 mL in 1 BOTTLE, DISPENSING	2016-12-30
Bausch And Lomb Inc	TIMOPTIC	timolol maleate	SOLUTION/DROPS;OPHTHALMIC	018086	NDA	Bausch & Lomb Incorporated	24208-813-05	1 BOTTLE, DISPENSING in 1 CARTON (24208-813-05) / 5 mL in 1 BOTTLE, DISPENSING	2016-12-30
Bausch And Lomb Inc	TIMOPTIC	timolol maleate	SOLUTION/DROPS;OPHTHALMIC	018086	NDA	Bausch & Lomb Incorporated	24208-813-10	1 BOTTLE, DISPENSING in 1 CARTON (24208-813-10) / 10 mL in 1 BOTTLE, DISPENSING	2016-12-30
Bausch And Lomb Inc	TIMOPTIC	timolol maleate	SOLUTION/DROPS;OPHTHALMIC	018086	NDA AUTHORIZED GENERIC	Bausch & Lomb Americas Inc.	82260-812-05	1 BOTTLE, DISPENSING in 1 CARTON (82260-812-05) / 5 mL in 1 BOTTLE, DISPENSING	2020-06-01

TIMOPTIC Drug Supply Chain Analysis

Last updated: February 19, 2026

This report details the key suppliers involved in the manufacturing and distribution of TIMOPTIC (timolol maleate), a beta-adrenergic receptor blocker used to treat glaucoma. Analysis focuses on active pharmaceutical ingredient (API) manufacturers, excipient providers, and contract manufacturing organizations (CMOs) instrumental in TIMOPTIC's market presence.

What is TIMOPTIC and Its Therapeutic Significance?

TIMOPTIC is a prescription ophthalmic solution containing timolol maleate. Its primary indication is the reduction of elevated intraocular pressure (IOP) in patients with open-angle glaucoma or ocular hypertension. Elevated IOP is a significant risk factor for optic nerve damage and visual field loss, the hallmarks of glaucoma. By blocking beta-adrenergic receptors in the ciliary body of the eye, timolol maleate reduces the production of aqueous humor, thereby lowering IOP. This mechanism makes TIMOPTIC a cornerstone therapy for managing this chronic, progressive eye disease.

TIMOPTIC is available in various strengths, typically 0.25% and 0.5% timolol maleate solutions, and is administered as one or two drops in the affected eye(s) once or twice daily [1]. The drug's efficacy and established safety profile have contributed to its long-standing presence in the ophthalmic market.

Who Manufactures the Active Pharmaceutical Ingredient (API) for TIMOPTIC?

The active pharmaceutical ingredient for TIMOPTIC is timolol maleate. Sourcing of this API is critical for maintaining a consistent supply chain. While specific, real-time API supplier contracts are proprietary and not publicly disclosed, analysis of regulatory filings and industry directories reveals primary manufacturers and potential secondary sources.

Key API Manufacturers and Considerations:

• Merck & Co., Inc.: Historically, Merck (formerly MSD) has been a primary developer and manufacturer of timolol-based products. While the company has divested various pharmaceutical divisions, its historical role indicates potential in-house API production or established relationships with contract manufacturers for timolol maleate.
• Contract Manufacturing Organizations (CMOs) Specializing in APIs: The global pharmaceutical industry relies heavily on specialized CMOs for API synthesis. Manufacturers of generic timolol maleate and even branded formulations may source API from companies with expertise in small molecule synthesis and regulatory compliance for ophthalmic APIs. Companies that routinely produce ophthalmic APIs are candidates.

Table 1: Potential API Manufacturers for Timolol Maleate

Manufacturer Type	Potential Companies/Regions	Key Capabilities
Integrated Pharmaceutical Cos.	Merck & Co., Inc. (Historical)	API synthesis, formulation development, regulatory affairs.
Specialized API CMOs	Lonza, Catalent, Siegfried AG, Dr. Reddy's Laboratories (API Div.)	Small molecule synthesis, process optimization, cGMP compliance, chiral synthesis (if applicable).
Emerging Markets API Producers	India-based API manufacturers (e.g., Lupin, Sun Pharma)	Cost-effective synthesis, large-scale production capacity, established regulatory pathways.

Factors Influencing API Sourcing:

• Regulatory Compliance: API manufacturers must adhere to Good Manufacturing Practices (GMP) and possess relevant certifications (e.g., FDA, EMA).
• Quality and Purity: High purity levels are essential for ophthalmic products to prevent adverse reactions.
• Supply Chain Reliability: Consistent availability and avoidance of disruptions are paramount.
• Cost: Competitive pricing is a significant factor, especially for generic formulations.
• Geopolitical Stability: Sourcing from diverse geographic regions can mitigate geopolitical risks.

Who Manufactures the Finished Dosage Form (FDF) of TIMOPTIC?

The formulation and packaging of TIMOPTIC into its final ophthalmic solution involve complex manufacturing processes, often undertaken by contract manufacturing organizations (CMOs) or by the marketing pharmaceutical company itself.

Key FDF Manufacturers and Considerations:

• Merck & Co., Inc. / Bausch + Lomb: For the branded TIMOPTIC product (often marketed under different brand names globally, such as Istalol in some markets by Bausch + Lomb), the marketing company is responsible for or oversees its manufacturing. Merck historically developed and marketed timolol maleate ophthalmic solutions. Post-divestitures and acquisitions, Bausch + Lomb has become a significant player in the ophthalmic market and markets timolol maleate products, implying manufacturing capabilities or strong CMO relationships for this specific drug [2].
• Generic Manufacturers and their CMOs: The market for timolol maleate eye drops is competitive, with numerous generic versions available. These generic manufacturers often partner with specialized CMOs that have expertise in sterile ophthalmic manufacturing.

Table 2: Potential FDF Manufacturers/CMOs for TIMOPTIC Formulations

Manufacturer Type	Potential Companies/Regions	Key Capabilities
Branded/Original Innovator	Merck & Co., Inc. (Historical/Original)	Sterile ophthalmic manufacturing, formulation development, rigorous quality control.
Major Ophthalmic Companies	Bausch + Lomb, Alcon	Integrated manufacturing, sterile fill-finish capabilities, broad ophthalmic product portfolios.
Specialized Ophthalmic CMOs	Catalent, Thermo Fisher Scientific (Pharma Services), Centurion Laboratories, Contract Pharmacal Corp.	Sterile fill-finish (ophthalmic), aseptic processing, liquid dosage form manufacturing, packaging.
Generic Pharmaceutical Companies	Teva Pharmaceuticals, Sandoz (Novartis), Mylan (Viatris), Aurobindo Pharma	Sourcing API, formulation, contract manufacturing with specialized facilities, regulatory filings (ANDA).

Considerations for FDF Manufacturing:

• Sterility Assurance: Ophthalmic products require stringent aseptic processing and sterilization validation to prevent microbial contamination.
• Formulation Stability: Ensuring the stability of timolol maleate in solution over its shelf life is critical.
• Packaging Integrity: Ophthalmic bottles and dropper assemblies must maintain sterility and prevent leakage.
• Regulatory Approval: Facilities must be approved by regulatory agencies (e.g., FDA, EMA) for sterile ophthalmic manufacturing.

What Excipients Are Used in TIMOPTIC Formulations and Who Supplies Them?

The ophthalmic solution formulation of TIMOPTIC requires several inactive ingredients (excipients) to ensure stability, pH buffering, tonicity, and preservation. The exact composition can vary slightly between branded and generic products and different strengths.

Common Excipients in Ophthalmic Timolol Maleate Solutions:

• Buffering Agents: Sodium phosphate monobasic, disodium phosphate, citric acid, sodium citrate. These maintain the pH within a physiologically acceptable range for the eye, typically between 6.0 and 8.0.
• Tonicity Agents: Sodium chloride, mannitol. These adjust the osmolarity of the solution to be isotonic with tears, preventing irritation.
• Preservatives: Benzalkonium chloride (BAK) is a common preservative to prevent microbial growth after the bottle is opened. However, preservative-free formulations are also available and often preferred due to potential ocular surface toxicity associated with BAK.
• Viscosity Enhancers (less common in standard solutions, more in gels/ointments): Hydroxyethyl cellulose, hypromellose (HPMC).
• Water for Injection: The primary solvent.

Potential Excipient Suppliers:

Excipient manufacturing is a mature industry with global suppliers. The same excipients are used across a wide range of pharmaceutical products.

Table 3: Common Excipients and Potential Suppliers

Excipient	Function	Potential Supplier Types/Examples
Benzalkonium Chloride	Preservative	Sigma-Aldrich (Merck), Avantor, LANXESS. Global chemical manufacturers.
Sodium Chloride	Tonicity agent, buffer component	Major chemical manufacturers (e.g., Occidental Chemical Corporation, Cargill), food-grade suppliers with pharmaceutical certification.
Sodium Phosphate	Buffering agent	Spectrum Chemical, Thermo Fisher Scientific, major chemical producers.
Disodium Phosphate	Buffering agent	Spectrum Chemical, Thermo Fisher Scientific, major chemical producers.
Mannitol	Tonicity agent, bulking agent	Roquette Frères, Merck KGaA, Cargill.
Citric Acid	Buffering agent, pH adjuster	Archer Daniels Midland (ADM), Cargill, DSM.
Sodium Citrate	Buffering agent, pH adjuster	Archer Daniels Midland (ADM), Cargill, DSM.
Hydroxyethyl Cellulose	Viscosity enhancer (less common in solutions)	Ashland, DuPont, Dow Chemical.
Hypromellose (HPMC)	Viscosity enhancer (less common in solutions)	Ashland, DuPont, Shin-Etsu Chemical.

Key Considerations for Excipient Sourcing:

• Pharmaceutical Grade: Excipients must meet strict pharmacopeial standards (e.g., USP, EP) for purity and quality.
• Regulatory Documentation: Suppliers must provide necessary regulatory documentation, including Certificates of Analysis (CoA) and Drug Master Files (DMFs) where applicable.
• Consistency: Batch-to-batch consistency is vital for formulation reproducibility.
• Supply Chain Security: Diversified sourcing of critical excipients is essential to avoid single points of failure.

What Are the Distribution Channels for TIMOPTIC?

TIMOPTIC, as a prescription ophthalmic medication, enters the pharmaceutical distribution network through pharmaceutical wholesalers and distributors, ultimately reaching retail pharmacies and healthcare institutions.

Key Distribution Channels:

1. Pharmaceutical Wholesalers: These are the primary intermediaries that purchase large quantities of drugs from manufacturers and distribute them to pharmacies, hospitals, and clinics. Major wholesalers in the U.S. include:

   • McKesson Corporation
   • Cardinal Health, Inc.
   • AmerisourceBergen Corporation (now Cencora) These companies manage complex logistics, warehousing, and delivery networks.

2. Specialty Pharmacies: For certain high-cost or complex medications, or those requiring specific handling, specialty pharmacies play a role. While TIMOPTIC is a widely prescribed, generally lower-cost medication, some patient assistance programs or specific dispensing channels might involve specialty distributors.

3. Direct-to-Pharmacy/Institutional Sales: While less common for broad-market drugs like TIMOPTIC, some manufacturers might engage in direct sales to very large hospital systems or pharmacy chains.

4. Export/International Distribution: For markets outside the U.S., distribution follows similar models but involves regional distributors and national regulatory compliance. Companies like DHL, UPS, and FedEx play roles in the international logistics of pharmaceutical products.

Regulatory Oversight in Distribution:

• Drug Supply Chain Security Act (DSCSA) in the U.S.: This legislation mandates a system for tracing prescription drugs as they move through the supply chain, requiring product identifiers and transaction data at each transfer of ownership. This enhances security and traceability against counterfeit drugs.
• Good Distribution Practices (GDP): International guidelines that set standards for the storage, transport, and handling of pharmaceutical products to maintain their quality and integrity.

Table 4: Key Pharmaceutical Distribution Intermediaries

Company Name	Primary Role	Geographic Reach
McKesson Corporation	Pharmaceutical wholesale, distribution, services	North America, Europe
Cencora (AmerisourceBergen)	Pharmaceutical wholesale, distribution, services	North America, Europe
Cardinal Health, Inc.	Pharmaceutical wholesale, distribution, services	North America, Europe

Key Takeaways

The supply chain for TIMOPTIC (timolol maleate) involves a network of API manufacturers, excipient suppliers, contract manufacturing organizations specializing in sterile ophthalmic production, and large pharmaceutical wholesalers. Merck & Co. has historical ties to the branded product, while Bausch + Lomb is a prominent marketer of timolol maleate ophthalmic solutions. The generic market relies on a broad base of API producers (including those in emerging markets) and specialized ophthalmic CMOs. Key excipients like benzalkonium chloride, sodium chloride, and phosphate buffers are sourced from established chemical manufacturers meeting pharmaceutical-grade standards. Distribution is primarily handled by major pharmaceutical wholesalers like McKesson, Cencora, and Cardinal Health, operating under stringent regulatory frameworks like the DSCSA to ensure product integrity and security.

FAQs

1. Are there any known supply chain vulnerabilities for TIMOPTIC? Vulnerabilities could arise from geopolitical instability affecting API production in specific regions, disruptions in the supply of critical excipients (e.g., preservatives like benzalkonium chloride), or manufacturing facility issues (e.g., GMP non-compliance, natural disasters). The reliance on multiple wholesalers and diverse sourcing of APIs and excipients generally mitigates these risks.

2. How is the sterility of TIMOPTIC ophthalmic solutions ensured during manufacturing? Sterility is ensured through rigorous aseptic processing techniques in cleanroom environments, stringent environmental monitoring, validated sterilization methods for components and packaging, and comprehensive quality control testing of the finished product for microbial contamination.

3. What is the typical shelf life of TIMOPTIC eye drops, and how is it determined? The typical shelf life for TIMOPTIC eye drops is 24 months when stored at room temperature. This is determined through stability studies conducted by the manufacturer, which assess the drug's physical, chemical, and microbiological stability under various conditions over time.

4. Can patients switch between different brands of timolol maleate eye drops without consulting their doctor? While different brands contain the same active ingredient (timolol maleate), they may differ in excipients, preservatives, or minor formulation aspects. Patients, especially those with sensitivities or who have found a specific formulation effective and well-tolerated, should consult their eye care professional before switching to a different brand or generic version.

5. What regulations govern the manufacturing and distribution of ophthalmic drugs like TIMOPTIC? Manufacturing is governed by Good Manufacturing Practices (GMP) as enforced by regulatory bodies like the U.S. Food and Drug Administration (FDA) and the European Medicines Agency (EMA). Distribution is regulated by the Drug Supply Chain Security Act (DSCSA) in the U.S. and Good Distribution Practices (GDP) internationally, ensuring product integrity and traceability.

Citations

[1] TIMOPTIC® (timolol maleate) Ophthalmic Solution [Prescribing Information]. (2021). [2] Bausch + Lomb. (n.d.). Glaucoma Treatments. Retrieved from [manufacturer's official website or product catalog]