VAC Vaccine Adjuvants for Animal Health

A family of high-performance aluminium hydroxide adjuvants designed for animal vaccines.

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Proven Performance for Animal Health Vaccines

VAC Aluminum Hydroxide is a high-purity aluminum hydroxide gel designed for the development and manufacture of veterinary vaccines. With a long history of successful use in vaccine formulations, it provides reliable antigen adsorption, excellent compatibility, and the quality standards required for modern animal health applications.

Products in the range

  • VAC 20 HA
  • VAC 20
  • VAC 15
  • VAC 30
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Why Choose VAC Aluminum Hydroxide?

Decades of Proven Safety

Aluminum hydroxide is one of the most extensively used and well-established adjuvants in vaccine development, supported by decades of successful application across numerous vaccine platforms.

Compatible with Combination Adjuvant Systems

VAC Aluminum Hydroxide can be combined with other adjuvant technologies, providing formulation flexibility to help achieve targeted immune responses.

Well-Characterized Performance

A thoroughly understood mechanism of action and established manufacturing controls enable consistent product performance and formulation confidence.

Broad Antigen Compatibility

Effective adsorption of a wide range of negatively charged antigens at physiological pH makes VAC Aluminum Hydroxide suitable for diverse veterinary vaccine applications.

Available VAC Grades
Characteristic VAC 20 HA VAC 20 VAC 30 VAC 15
Assay Al₂O₃ % 1.9–2.1% 1.9–2.1% 2.9–3.1% 1.4–1.6%
Protein Absorption* 3.5–4.0 2.5 2.5 2.5
Particle Size 5 µm 25 µm 25 µm 25 µm
Purified Water Status Ongoing - 2027 Available Available Available

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Performance you can count on
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Performance you can count on

VAC Aluminum Hydroxide delivers trusted adjuvant performance, formulation flexibility, and high-quality manufacturing to support the successful development of animal health vaccines.
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The SPI Pharma Advantage

20+ Years of Vaccine Adjuvant Expertise

SPI Pharma's experience, together with strategic industry partnerships, supports vaccine developers with trusted adjuvant solutions and a growing pipeline of innovative technologies.

Quality You Can Trust

Manufactured to stringent quality standards with a focus on consistency and reliability.

Secure Global Supply

Scalable manufacturing and reliable supply to support programs from clinical development through commercial production.

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