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Trusted ophthalmic manufacturer for sterile eye care

Siegfried is your expert ophthalmic manufacturer for end-to-end sterile eye care. Backed by over 95 years of experience, Siegfried turns demanding ophthalmic formulations into reliable, market-ready products.
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Siegfried is your expert ophthalmic manufacturer for end-to-end sterile eye care. Backed by over 95 years of experience, Siegfried turns demanding ophthalmic formulations into reliable, market-ready products.

Siegfried is a leading ophthalmic CDMO providing end-to-end sterile development, manufacturing, and packaging for pharmaceutical and biotechnology companies worldwide. We support the full lifecycle of your ophthalmic drug products starting from formulation and accelerating the drug to commercial supply.

Our modern facilities and experienced teams manufacture and fill ophthalmic pharmaceuticals in bottles, tubes and preservative-free bottles. We ensure the highest standards of quality and compliance at every step.

Your trusted partner for ophthalmic drug products

Expertise

A dedicated Development Center offering development and scale up services

Reliability

95+ years of experience as a reliable ophthalmic partner, from clinical trials to commercial supply

Agility

Tailored solutions for complex ophthalmic formulations and processes

Our wide range of services for ophthalmic drug products

Pharmaceutical ophthalmic drug development

Our flexible platform develops standard and complex ophthalmic formulations. Siegfried’s development experts support you with:

  • Evaluating primary packaging materials
  • Selecting the right sterilization system (filtration, steam sterilization, dry heat, chemical sterilants or gamma irradiation)
  • Identifying the best mixing and dosing system (e.g. peristaltic or rotary piston pumps)
  • Studying production material and packaging interactions with your formulation and supporting leachables and extractables studies
  • Evaluating terminal sterilization effects

Analytical development for ophthalmic formulations

Our experienced drug product analytical development team supports development projects with cGMP-compliant analyses, working alongside our drug substance team to support your product at every phase in the development process. With access to the analytical resources of our global network, analytical services range from development activities, formulation support, stability testing to method validation and commercial GMP batch release testing.

Scale-up and clinical trial material production for ophthalmic products

We take your process to the next manufacturing level whether the formulation is new, modified, or already existing. Siegfried offers cGMP-manufacturing of all scales ranging from very small quantities to pilot scale batches depending on your specific needs. An expert approves all GMP relevant documents and handles the market release.

Siegfried offers drug product clinical trial manufacturing under cGMP conditions at our Irvine and El Masnou facilities, serving every country where your study runs using fixed or disposable technologies.

Process and analytical method transfer in ophthalmic contract manufacturing

Siegfried plans and designs processes from an early development phase to secure a successful scale-up and transfer to commercial production. Our adaptable and scalable solutions cater to a wide range of formulation and project needs, encompassing both ANDA and NDA products. Our scalable solutions cover ANDA and NDA products and transfer seamlessly to our US or EU sites.

Services include:

  • Transfer of analytical methods (including cleaning validation)
  • Transfer and/or scale-up of the production process
  • Process qualification and validation
  • Manufacturing and release of registration batches
  • Packaging according to customer specifications
  • Stability testing according to ICH
  • Support in registration activities
  • Life cycle management

Commercial ophthalmic manufacturing and packaging

Siegfried supplies ophthalmic formulations packed and ready to market worldwide in accordance with all cGMP, customer, and market-specific requirements:

  • Primary packaging
    • Bottles (round, oval, glass BTC)
    • Tubes (alu, laminated foil)
    • preservative-free bottles (Aptar®)
  • Secondary packaging
    • Labeling of bottles
    • Tamper evident serialized folding boxes
    • Pouch packaging
  • Tertiary packaging
    • Bundling and aggregation
    • Shipper and pallet aggregation

Technical capabilities for ophthalmic formulations manufacturing

Our technical capabilities cover:

  • Compounding of sterile ointments, gels, suspensions, and solutions
  • Filling in tubes and bottles (bottle/ tip/ cap)
  • Manufacturing and filling of preservative free forms in multi-dose bottles (using Aptar® OSD-ophthalmic squeeze dispenser)
  • Final packaging in ready-to-market configurations including serialization and aggregation
  • In-house technical expertise and state-of-the-art microbiology and chemistry laboratories for both incoming raw materials, in-process, and finished product testing capability services

Siegfried runs renowned equipment from Waldner, Fryma, IWK, Bausch + Ströbel, and Uhlmann. All facilities are routinely inspected by national and international authorities, a standard you can learn more about through our quality commitment and our technologies platform.

A broad ophthalmic portfolio across subspecialties

Our ophthalmic portfolio spans the subspecialties that matter most to patients, including glaucoma, retina, cornea, dry eye, and refraction. This breadth lets one partner support diverse brands and indications, from preservative-free eye drops to sterile ointments, under a single quality system.

Video: Ophthalmic capabilities in El Masnou

The Spanish site is our largest facility specialized in handling ophthalmic products.

Watch now

Siegfried's centers of excellence for ophthalmic drug products

Siegfried operates specialized sites for ophthalmic manufacturing in El Masnou and Irvine, supported by Siegfried's global network across Europe, the USA, Asia, and Australia.
Siegfried operates specialized sites for ophthalmic manufacturing in El Masnou and Irvine, supported by Siegfried's global network across Europe, the USA, Asia, and Australia.
Drug Substance
Drug Products

Europe

Zofingen

Zofingen

Switzerland

Zofingen is the headquarters of the Siegfried Group and one of Siegfried’s two launch sites for newly developed processes. The production site specializes in the development and commercial manufacturing of active pharmaceutical ingredients (APIs) and intermediates, including high potency APIs. Founded in 1873, the site has a broad portfolio of technological capabilities including hydrogenation, organometallic and hydride chemistry, halogenation, methylation, milling and micronization and more. All activities are conducted in strict compliance with quality standards (GMPs) and with safety, health protection and environmental standards.

Competencies

  • Active pharmaceutical ingredients (API) and intermediates
  • Highly active and controlled substances
  • Custom synthesis
Founded in: 1873
Employees: 768
Head Office Siegfried AG
Untere Bruehlstrasse 4
4800 Zofingen Switzerland
Evionnaz

Evionnaz

Switzerland

Siegfried Evionnaz is one of Siegfried’s two launch sites for newly developed processes. It specializes in custom synthesis of active ingredients and intermediates for the pharmaceutical industry. With an R&D Center housing advanced chemical and analytical facilities, state-of-the-art laboratories, and cutting-edge technologies, it offers chemical process R&D and analytical development services for Siegfried’s global Drug Substances network. Established in 1957, the site has a broad portfolio of technologies including micronization, azide chemistry, hydrogenation, halogenation, organometallics, cryogenics, and more. Focused on niche technologies, the facility possesses development capacity from 1 gram to industrial-scale production. All activities are conducted in strict compliance with quality standards (GMPs) and with safety, health protection and environmental standards.

Competencies

  • Active pharmaceutical ingredients (API) and intermediates
  • Custom synthesis
With Siegfried since: 2015
Employees: 395
Siegfried Evionnaz SA
Route du Simplon 1,36
1902 Evionnaz
Switzerland
Zurich

Zurich

Switzerland

DINAMIQS, a Siegfried company, is a science-driven Contract Development and Manufacturing Organization offering end-to-end viral vector manufacturing solutions to accelerate gene therapy projects from DNA design to commercial scale. DINAMIQS offers a comprehensive and customized range of manufacturing services, process development, quality control and analytics solutions for genetic medicine companies.

Competencies

  • Viral vectors
With Siegfried since: 2023
Employees: 45
Siegfried DINAMIQS
Wagistrasse 18
8952 Schlieren
Switzerland
Hameln

Hameln

Germany

Siegfried Hameln is one of Siegfried’s six Drug Products sites globally. It is a leading manufacturer of parenteral solutions, producing a wide range of aseptic and terminally sterilized products in PFS, cartridges, ampoules and vials, with a dedicated development center for sterile injectables. Its specialization lies in the production of complex formulations, including anesthetics, flammable substances, oxygen-sensitive liquids, and cold chain products, all while ensuring strict compliance with quality standards (GMPs) and with safety, health protection and environmental standards. The site has a broad portfolio of technological capabilities including cold-chain handling, automated visual inspection and packing and more. All activities are conducted in strict compliance with quality standards (GMPs) and with safety, health protection and environmental standards.

Competencies

  • Sterile and aseptic filling of PFS, cartridges, ampoules and vials
  • Biologics and small molecules
With Siegfried since: 2014
Employees: 634
Siegfried Hameln GmbH
Langes Feld 13
31789 Hameln
Germany
Minden

Minden

Germany

Siegfried Minden is one of Siegfried’s five run and deliver sites for established processes. It specializes in synthesis of active ingredients and intermediates for the pharmaceutical industry. Established in 1935 and focused on efficient operations and special technologies, the facility possesses production capacity from approximately 25 kilograms to multi-100-ton-scale production. The site has a broad portfolio of technological capabilities such as hydrogenation, organometallic and hydride chemistry, milling and micronization, halogenation and more. All activities are conducted in strict compliance with quality standards (GMPs) and with safety, health protection and environmental standards.

Competencies

  • Active pharmaceutical ingredients (API) and intermediates
  • Highly active and controlled substances
  • Custom synthesis

Watch the large-scale API manufacturing facility video
Nachbarschaftsbroschüre

With Siegfried since: 2015
Employees: 536
Siegfried PharmaChemikalien
Minden GmbH
Karlstrasse 15
32423 Minden
Germany
St.Vulbas

St.Vulbas

France

Siegfried St.Vulbas is one of Siegfried’s five run and deliver sites for established processes. It specializes in synthesis of active ingredients, intermediates and custom synthesis for the pharmaceutical industry. Established in 1993, the site has a broad portfolio of technological capabilities such as organometallic and hydride chemistry, phosgenation, hydrogenation, halogenation and more. All activities are conducted in strict compliance with quality standards (GMPs) and with safety, health protection and environmental standards.

Competencies

  • Active pharmaceutical ingredients (API) and intermediates
  • Custom synthesis
With Siegfried since: 2015
Employees: 154
Siegfried St. Vulbas SAS
Parc Industriel de la Plaine de l‘Ain
530 Allée de la Luye
01150 Saint Vulbas
France
Hal Far

Hal Far

Malta

Siegfried Malta is one of six Siegfried’s Drug Products sites globally. It specializes in the manufacturing of oral solid dosage forms (OSD), encompassing tablet and capsule formulations with diverse release profiles (IR, SR, DR), formulations and technologies. Established in 2007 as one of the first OSD sites within the Siegfried network, technologies range from dry blends, aqueous and organic – wet/dry granulation (bottom with Wurster technology and top spray), tableting, encapsulation, coating and blister packaging. The facility has the ability to produce manufacturing batch sizes on a mid – large scale, with a focus on tech transfer and scale up activities. All operations comply strictly with quality standards (GxPs), safety, health protection and environmental standards.

Competencies

  • Bulk manufacturing and packaging of solid dosage forms for oral applications
With Siegfried since: 2007
Employees: 167
Siegfried Malta Ltd
HHF070 Hal Far Industrial Estate
Hal Far BBG 3000
Malta
Barberà del Vallès

Barberà del Vallès

Spain

Siegfried Barberà is one of Siegfried’s six Drug Products sites globally. It specializes in manufacturing and packaging solid oral dosage forms (OSD), including high-potency and inhalation capsules for treating respiratory diseases. Established in 1994, the site supplies products worldwide including Japan and the USA. It has a dedicated Development Center offering development and scale-up services for solid dosage forms and inhalation capules. The site has a wide range of equipment to produce solid formulations on a small and large scale, with blister, bottle and wallet/Shellpak packaging forms. Its state-of-the-art production equipment integrates Industry 4.0 technologies, such as digitization, system integration, robotics, and automation, ensuring precise processes. All activities are conducted in strict compliance with quality standards (GMPs) and with safety, health protection and environmental standards.

Competencies

  • Bulk manufacturing and packaging of solid dosage forms for oral applications including high potency
  • Inhalation capsules for medical devices to treat respiratory diseases

Learn more
Watch the development center video

With Siegfried since: 2021
Employees: 479
Siegfried Barbera S.L.
Ronda de Santa Maria 158
08210 Barberà del Vallès (Barcelona)
Spain
El Masnou

El Masnou

Spain

Siegfried El Masnou is one of Siegfried’s six Drug Products sites globally. It has a long track record of expertise in manufacturing aseptic products, with the site established in 1925. It is the largest factory in Spain specialized in ophthalmic products, both eye drops and sterile eye care ointments, as well as products for nasal and otic use. It has a dedicated Development Center offering development and scale up services focused on sterile ophthalmic products. The site’s technological capabilities include ball milling molturation, pre-use post sterilization integrity testing, and multi-dose round, oval and preservative-free bottles. Processes are fully automated and use cutting-edge technology, embracing Industry 4.0 technologies like system integration, robotics, and extensive automation. All activities are conducted in strict compliance with quality standards (GMPs) and with safety, health protection and environmental standards.

Competencies

  • Bulk manufacturing and packaging of sterile ophthalmic products, including eye drops, eye ointments, otic/nasal sprays

Watch the site video
Watch the development center video

With Siegfried since: 2021
Employees: 550
Siegfried El Masnou, S.A.
Camil Fabra, 58
08320 El Masnou (Barcelona)
Spain

USA

Pennsville

Pennsville

New Jersey

Siegfried Pennsville is one of Siegfried’s five run and deliver sites for established processes. It is Siegfried’s drug substance manufacturing site for the US market and provides spray drying operations globally. Established in 1928, its main activities are pilot and commercial manufacturing of drug substances (APIs) and intermediates, in a fully cGMP and SHE compliant manner. The site has a broad portfolio of technological capabilities including spray drying, organometallic and hydride chemistry, hydrogenation, milling and micronization and more.

Competencies

  • Active pharmaceutical ingredients (API) and intermediates
  • Highly active and controlled substances
  • Custom synthesis
With Siegfried since: 1928
Employees: 171
Siegfried USA, LLC
33 Industrial Park Road
Pennsville, NJ 08070
USA
Irvine

Irvine

California

Siegfried Irvine is one of Siegfried’s six Drug Product sites globally. It is a sterile drug product manufacturing site, specializing in innovative and difficult to manufacture pharmaceuticals, ophthalmics, and drug delivery devices. It provides cGMP sterile drug product fill and finish of biologics, suspensions, emulsions, ointments, and gels in a fully compliant manner. Established in 2002, the site’s technological capabilities include state-of-the-art filling lines for vials, droptainers and prefilled syringes; bulk filling capabilities; and low oxygen, light sensitivity, low humidity and non-aqueous product handling. All activities are conducted in strict compliance with quality standards (GMPs) and with safety, health protection and environmental standards.

Competencies

  • Sterile and aseptic filling of large and small molecules
With Siegfried since: 2012
Employees: 182
Siegfried Irvine
9342 Jeronimo Road
Irvine, CA 92618
USA
Grafton

Grafton

Wisconsin

The Siegfried Acceleration Hub in Grafton specializes in early-phase development and manufacturing. Established in 1998, the site offers phase-appropriate analytical and development services, regulatory expertise, and regulatory-compliant quality systems — all with the capability to manage highly potent and controlled substances. The Acceleration Hub provides end-to-end life cycle management with services from preclinical through commercial, including scale-up, tech transfer, validation and launch, with seamless transfer into Siegfried’s global network. The site has a broad portfolio of technologies and capabilities, including phase-appropriate preclinical process development, advanced filtration technologies, CMC sections of DMFs, alternate synthesis, route scouting and more. All activities are conducted in strict compliance with quality standards (GMPs) and with safety, health protection and environmental standards.

Competencies

  • Early-phase development and manufacturing

 
Learn more

With Siegfried since: 2024
Employees: 85
870 Badger Circle
Grafton, WI 53024
USA
Athens

Athens

Georgia
The Siegfried Acceleration Hub Athens specializes in early-phase development and manufacturing. Established in 1982, the site serves both emerging biotech and established pharmaceutical companies, offering high-quality custom synthesis, process development, scale-up, and GMP manufacturing services.
As part of the Siegfried Acceleration Hub, the experts at the Athens site support customers in accelerating drug development through the early phases and ensures a seamless transfer into Siegfried’s global manufacturing network.

Competencies

  • Early-phase development

Learn more

With Siegfried since: 2026
Employees: 45
Siegfried Acceleration Hub Athens
1550 Olympic Drive
Athens, GA 30601
Wilmington

Wilmington

Delaware

Siegfried Wilmington, is one of Siegfried’s five run and deliver sites for established processes. It is a large-scale commercial manufacturing facility for innovative products and controlled substances, supporting a wide range of therapeutic applications. Established in 1979, the multi-purpose site today offers 150 cubic meters of reactor capacity with a wide range of technologies, operating to the highest regulatory and quality standards.

Competencies

  • Active pharmaceutical ingredients (API), Intermediates, Controlled Substances

 

With Siegfried since: 2026
Employees: 180
Siegfried Wilmington
500 Swedes Landing Rd
Wilmington, DE 19801
USA

Asia

Nantong

Nantong

China

Siegfried Nantong is one of Siegfried’s five run and deliver sites for established processes. It specializes in custom synthesis of active ingredients and intermediates for the pharmaceutical industry. Established in 2013, the chemical plant’s technological capabilities include organometallic chemistry, hydrogenation, alkylation, amination, chlorination and milling. All activities are conducted in strict compliance with quality standards (GMPs) and with safety, health protection and environmental standards.

Competencies

  • Active pharmaceutical ingredients (API) and intermediates
  • Custom synthesis
With Siegfried since: 2013
Employees: 260
Siegfried (Nantong) Pharmaceuticals Co. Ltd.
No. 5, Tongshun Road, NETDA
Nantong City, Jiangsu Province
P.R.C. (post code: 226017)

Australia

Westbury

Westbury

Extractas Bioscience, located in Westbury, Tasmania (AU), is a leading manufacturer of purified products, specializing in the commercial extraction of alkaloid raw materials. Established in 1975, the site operates as a fully integrated research and manufacturing facility with a strong focus on innovation and operational excellence.
Westbury provides integrated agricultural, analytical, and manufacturing services, ensuring a reliable supply of high-quality products.

Competencies

  • Commercial extraction of alkaloid raw materials 

Learn more

With Siegfried since: 2026
Employees: 170
160 Birralee Rd
Westbury TAS 7303
Australia

FAQ: Ophthalmic manufacturer

What does an ophthalmic manufacturer do?

An ophthalmic manufacturer develops and produces sterile medicines for the eye, such as eye drops, ointments, gels, and suspensions. The work covers formulation, sterile filling, packaging, and quality testing under cGMP, because anything applied to the eye must be sterile and gentle. A specialist like Siegfried handles the full path, from early ophthalmic drug development through commercial manufacturing and worldwide supply.

What is the difference between a CMO and an ophthalmic CDMO?

A CMO only manufactures an ophthalmic product to a process you provide. An ophthalmic CDMO adds the development side, formulating the product, validating analytical methods, and scaling the process before commercial supply. Choosing an ophthalmic CDMO like Siegfried keeps formulation, scale-up, and manufacturing with one partner, reducing technology-transfer risk and shortening timelines from clinic to market.

What types of ophthalmic drug products can Siegfried manufacture?

Siegfried manufactures sterile eye drops, eye ointments, gels, suspensions, and solutions, plus preservative-free multi-dose forms using the Aptar® squeeze dispenser. Primary packaging includes round and oval bottles, glass BTC, and aluminum or laminated foil tubes, all filled, packaged, and serialized ready for global markets.

 

Is Siegfried's ophthalmic contract manufacturing cGMP compliant?

All Siegfried ophthalmic sites operate under current Good Manufacturing Practice and are routinely inspected by national and international authorities. Our in-house microbiology and chemistry laboratories test raw materials, in-process samples, and finished products, while a qualified person approves every GMP-relevant document and handles market release. This is what lets us supply clinical and commercial ophthalmics reliably.

Does Siegfried offer preservative-free ophthalmic formulations?

We manufacture and fill preservative-free forms in multi-dose bottles using the Aptar® ophthalmic squeeze dispenser, a system designed to keep the product sterile without preservatives. Preservative-free formulations suit sensitive eyes and chronic conditions such as dry eye, and Siegfried supports them from formulation development through commercial ophthalmics manufacturing and packaging.

Which ophthalmology subspecialties does Siegfried's portfolio cover?

Siegfried’s ophthalmic portfolio spans the main subspecialties, including glaucoma, retina, cornea, dry eye, and refraction. This breadth lets one partner support diverse brands and indications under a single quality system, from preservative-free eye drops to sterile ointments. It also simplifies lifecycle management when you expand a product family across several ocular indications.

Where does Siegfried manufacture ophthalmic products?

Siegfried manufactures sterile ophthalmics at its El Masnou site near Barcelona, Spain, its largest ophthalmic facility, and at its Irvine site in California, USA. El Masnou produces eye drops, sterile eye ointments, and nasal and otic forms, while Irvine specializes in sterile fill-finish for difficult-to-manufacture products. Both sites support clinical trial material and commercial supply worldwide.

Can an ophthalmic CDMO handle both ANDA and NDA products?

Yes, Siegfried’s process and analytical method transfer covers both ANDA and NDA ophthalmic products, with scalable solutions matched to your formulation and project. We transfer analytical methods, qualify and validate processes, manufacture registration batches, and support registration activities, moving your product seamlessly to our US or EU sites for commercial ophthalmic contract manufacturing.

How do I choose an ophthalmic manufacturer for my product?

Look for proven sterile development and cGMP manufacturing in one network, a clean regulatory inspection history, preservative-free and multi-dose capability, and experience across ocular dosage forms. A partner offering ophthalmic formulation development, scale-up, and commercial supply under one roof reduces technology-transfer risk and protects your timeline, which is exactly how Siegfried’s ophthalmics offering is structured.

How does an ophthalmic CDMO speed up the time to market?

By combining ophthalmic formulation development, analytical work, scale-up, and submission-ready transfer in one network, an ophthalmic CDMO removes the hand-offs that slow a program. Siegfried’s dedicated Development Center and integrated sites let you move from formulation to validated commercial supply without re-qualifying a new partner at each phase, helping you reach patients faster.

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