
Adjuvants
To this day, one of Croda’s core competencies is to develop, manufacture and market high-quality adjuvants and be a dedicated and reliable partner for our customers. This unique historical focus has formed a strong market position and brands such as Alhydrogel™, Adju-Phos™ and Quil-A™ are widely recognised in the vaccine industry.
Vaccine adjuvants are a highly heterogenous collection of compounds that share one functional characteristic: the ability to enhance immune responses.

Product finder
Explore our range of vaccine adjuvantsUnderstanding the importance of adjuvants to your business
• Developing and manufacturing vaccines is not a trivial task. We possess the highest level of expertise in adjuvants, which we will bring to the table and adapt to your needs
• We are a team of experts in manufacturing adjuvants who are dedicated to adding value to your business.
• We understand the need for new adjuvant technologies in modern vaccines. We continuously strive to improve. Our R&D group develops the next generation of adjuvants and shares our knowledge with vaccinologists to facilitate effective vaccine design
Contact us to find out how we can support your vaccine development.
Consistent high quality
• We are the only company to manufacture sterile adjuvants produced by an aseptic process
• We manufacture according to GMP EudraLex Volume 4
• We strive to continually improve our Quality Management System through established metrics
Dedication
• We have been a key player in developing adjuvants and making them available since 1939
• We are proud of more than 680 peer-reviewed publications involving our adjuvants and roughly 23,000 scientific hits on Google Scholar
• We are committed to developing our expertise and portfolio of products and services for the benefit of our customers
Adjuvant Categories
• Mineral-based adjuvants include aluminium hydroxide and aluminium phosphate gel products specifically developed for use in human and veterinary vaccines
• Saponins include purified extracts from Quillaja saponaria Molina tree and stimulate both cell-mediated and antibody-mediated immune responses to antigens
Vaccine adjuvants
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View our vaccine adjuvants portfolio
Click below to discover our range of mineral-based adjuvants.

Alhydrogel™
An aluminium hydroxide gel which is a suspension of boehmite-like (aluminium oxyhydroxide) hydrated nano/micron size crystals in loose aggregates.

Adju-Phos™
An aluminium phosphate gel which is a suspension of hydrated amorphous aluminium hydroxyphosphate nano/micron size crystal in loose aggregates.

AlhydroVet™
AlhydroVet is an aluminium hydroxide gel product specifically manufactured for use as an adjuvant in veterinary vaccines.
Click below to discover our range of saponins.

Quil-A™
A highly purified and concentrated saponin adjuvant purified from bark extract of the Quillaja saponaria Molina tree which has been specifically developed for use as an adjuvant in vaccines.

QS-21
*sample can be ordered for investigational use only* One specific fraction of the Quil-A saponin mixture, QS-21, has been shown to enhance antibody- and cell-mediated immune response and has been...
Our range of adjuvants for human vaccines.

Adju-Phos™
An aluminium phosphate gel which is a suspension of hydrated amorphous aluminium hydroxyphosphate nano/micron size crystal in loose aggregates.

Alhydrogel™
An aluminium hydroxide gel which is a suspension of boehmite-like (aluminium oxyhydroxide) hydrated nano/micron size crystals in loose aggregates.

QS-21
*sample can be ordered for investigational use only* One specific fraction of the Quil-A saponin mixture, QS-21, has been shown to enhance antibody- and cell-mediated immune response and has been...
Discover our range of adjuvants for veterinary vaccines.

Quil-A™
A highly purified and concentrated saponin adjuvant purified from bark extract of the Quillaja saponaria Molina tree which has been specifically developed for use as an adjuvant in vaccines.

Adju-Phos™
An aluminium phosphate gel which is a suspension of hydrated amorphous aluminium hydroxyphosphate nano/micron size crystal in loose aggregates.

Alhydrogel™
An aluminium hydroxide gel which is a suspension of boehmite-like (aluminium oxyhydroxide) hydrated nano/micron size crystals in loose aggregates.

AlhydroVet™
AlhydroVet is an aluminium hydroxide gel product specifically manufactured for use as an adjuvant in veterinary vaccines.

Resources
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View resourcesAdjuvancy
Adjuvants are used in vaccine production to accelerate, prolong, or enhance antigen-specific immune responses. They help to raise an early, long-lasting and efficient immune response to the vaccine. This increases vaccine efficacy and provides a high degree of protection from the disease against which you are vaccinating.
Learn more