Development and manufacturing of complex oral solid dosage forms (OSD)
Your trusted partner for the development and manufacturing of tablets and capsules
Our oral solid dose CDMO services
Pharmaceutical development
Siegfried provides pharmaceutical development services for complex oral solid dosage forms, from formulation design to scalable manufacturing processes. Our expertise includes:
- highly potent APIs (HPAPIs),
- controlled substances,
- narcotics and modified-release formulations,
supported by advanced development technologies.
We support second- and third-generation formulations to enable lifecycle management and long-term product success.
APIs can be supplied either by our customers or by Siegfried’s integrated drug substance development and manufacturing teams, enabling seamless collaboration from API development to finished drug product manufacturing. Early API specification alignment supports efficient formulation development and smooth downstream manufacturing.
Analytical development
Our experienced drug product analytical development team supports projects with cGMP-compliant testing throughout the entire development lifecycle. Working closely with our drug substance analytics team, we ensure seamless analytical support from early development through commercial manufacturing and packaging.
Backed by the resources of our global network, our analytical services range from development activities and formulation support to stability testing, method validation, and commercial GMP batch release testing.
Scale-up and clinical trial material production
We support rapid and seamless scale-up from development to clinical and pilot-scale manufacturing, regardless of whether the formulation is new, modified, or transferred from an existing process.
Siegfried offers cGMP manufacturing capabilities ranging from very small quantities to pilot-scale batches based on project requirements.
Clinical trial manufacturing at our Barberà del Vallès site is certified by national and international authorities and supported by highly qualified GMP teams.
Process and analytical method transfer
Siegfried designs scalable processes from the earliest stages of development. Standardized equipment platforms across multiple scales enable efficient transfer from laboratory to commercial manufacturing.
We support process and analytical method transfer to Siegfried sites or customer-selected manufacturing locations.
- Analytical method transfer and cleaning validation
- Production process transfer and scale-up
- Process qualification and validation
- Registration batch and CTM manufacturing
- Packaging and stability testing
- Regulatory and lifecycle management support
Commercial manufacturing and packaging
Siegfried offers commercial manufacturing and packaging services across a wide range of oral solid dosage forms, including highly potent products.
Manufacturing capabilities
- Granules and powder mixtures
- Pellets and mini-tablets
- Film-coated tablets and pellets
- Hard capsules
- Highly potent tablets and capsules
- Inhalation capsules
Packaging capabilities
Primary packaging:
- HDPE bottles
- Thermoform and cold-form blisters
- Peel-off and anonymous blisters
Secondary packaging:
- Serialized bottle labeling
- Tamper-evident folding boxes
- Wallet packaging
- Print-on-demand labeling
Tertiary packaging:
- Bundling and aggregation
- Shipper case packaging and pallet aggregation
- boxes (automated device insertion available)
Technical capabilities
From early development and CTM-scale production to large-scale commercial manufacturing, Siegfried offers advanced technology platforms for standard and highly potent APIs.
Core OSD manufacturing
- Blending
- Wet and dry granulation
- Fluid bed processing
- Pellet extrusion and spheronization
- Tablet compression
- Coating technologies
- Hard capsule filling
Advanced technologies
- Spray drying and lipid-based delivery systems
- Pin milling and nano milling
- Low-humidity processing
- Organic solvent handling
Packaging and market readiness
- Blister and bottle packaging
- Serialization and aggregation
Facilities and compliance
- State-of-the-art equipment platforms
- Refrigerated storage capabilities
- Globally inspected and approved facilities
- Controlled substance handling licenses
Siegfried's centers of excellence for OSD pharmaceutical manufacturing
Europe
Zofingen
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

4800 Zofingen Switzerland
Evionnaz
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

1902 Evionnaz
Switzerland
Zurich
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

Hameln
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 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 ampoules and vials
- Biologics and small molecules

Minden
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

Karlstrasse 15
32423 Minden
Germany
St.Vulbas
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

530 Allée de la Luye
01150 Saint Vulbas
France
Hal Far
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

Hal Far BBG 3000
Malta
Barberà del Vallès
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

08210 Barberà del Vallès (Barcelona)
Spain
El Masnou
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

08320 El Masnou (Barcelona)
Spain
USA
Pennsville
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

Pennsville, NJ 08070
USA
Irvine
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

Grafton
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.

Athens

Wilmington
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

Wilmington, DE 19801
USA
Asia
Nantong
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

Nantong City, Jiangsu Province
P.R.C. (post code: 226017)
Australia
Westbury

FAQ about oral solid dosage forms (OSD)
What are oral solid dosage forms (OSD)?
Oral solid dosage forms (OSD) are pharmaceutical products administered orally in solid form, including tablets, capsules, granules, pellets, and powders. OSD products are widely used because they offer stability, accurate dosing, scalability, and patient convenience.
What are the advantages of oral solid dosage forms (OSD)?
Oral solid dosage forms offer several advantages, including good chemical stability, precise dosing, cost-efficient manufacturing, patient convenience, and suitability for large-scale commercial production
What are the technical challenges in manufacturing oral solid dosage forms (OSD)?
Manufacturing oral solid dosage forms can involve several technical challenges, including poor bioavailability, content uniformity, powder flowability, scalability, moisture sensitivity, and the handling of highly potent APIs. Complex formulations such as modified-release products may also require specialized technologies and process controls to ensure consistent product quality and performance.
What is spray drying and why is it used in OSD manufacturing?
Spray drying is a particle engineering technology used to improve the solubility and bioavailability of poorly water-soluble drug substances. In oral solid dosage manufacturing, spray drying can help enhance drug absorption and support the development of complex formulations with improved therapeutic performance.
What is technology transfer in pharmaceutical manufacturing?
Technology transfer is the process of transferring a pharmaceutical manufacturing process from development to commercial production or between manufacturing sites. Successful technology transfer helps ensure product quality, process consistency, and supply reliability.
What are highly potent APIs (HPAPIs) in oral solid dosage manufacturing?
Highly potent APIs (HPAPIs) are active pharmaceutical ingredients that are effective at very low doses and require specialized containment, handling, and manufacturing controls to protect operators and ensure product quality.
What is high containment in OSD manufacturing?
High containment refers to specialized manufacturing environments and operational controls designed to safely handle highly potent APIs (HPAPIs) and other hazardous compounds during oral solid dosage (OSD) production. High-containment manufacturing helps protect operators, prevent cross-contamination, and ensure product quality through advanced engineering controls, containment systems, and strict handling procedures.
What are modified-release oral solid dosage forms?
Modified-release dosage forms are designed to control how the active pharmaceutical ingredient is released in the body over time. Common approaches include sustained-release and controlled-release formulations that can improve efficacy, safety, or patient adherence.
What packaging options are available for oral dosage formulations?
Oral solid dosage products can be packaged in bottles, blisters, wallet packs, and other configurations depending on product requirements, regulatory needs, and target markets.
Besides OSD manufacturing, does Siegfried provide integrated services for APIs and drug products ?
Yes. Siegfried offers integrated drug substance and drug product capabilities, enabling seamless support from API development to commercial oral solid dosage manufacturing and packaging.
Let’s get in touch to discuss your oral solid dose manufacturing requirements
From formulation development to commercial manufacturing and packaging, Siegfried provides integrated OSD solutions backed by advanced technologies and specialized manufacturing expertise. Partner with us to accelerate development, simplify complexity, and ensure reliable global supply.
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