QA-21 Adjuvant
A lyophilized powder adjuvant derived from Quillaja saponaria, formulated to potently enhance immune responses in veterinary vaccines for multiple animal species including poultry, swine, and ruminants.
The veterinary vaccine adjuvants market is expanding rapidly, driven by rising demand for effective animal immunization across poultry, swine, ruminants, and aquaculture. VuRoyal Pharmaceutical, as the exclusive China partner of Desert King International, supplies GMP-compliant saponin-based adjuvants—QA-21, Vet-sap, and Ultra—purpose-built for animal health applications worldwide.
GMP-compliant, saponin-derived adjuvants designed to enhance immune responses across a broad spectrum of animal species and disease targets.
A lyophilized powder adjuvant derived from Quillaja saponaria, formulated to potently enhance immune responses in veterinary vaccines for multiple animal species including poultry, swine, and ruminants.
A high-purity 90% saponin powder adjuvant sourced from Quillaja saponaria, offering broad-spectrum immune enhancement as a feed additive and vaccine component for animal health applications.
A 65–70% saponin powder adjuvant from Yucca schidigera and Quillaja saponaria, supporting disease resistance in aquaculture species such as salmon and shrimp, including prevention of SRS and rotavirus diarrhea.
Veterinary adjuvants supplied as feed additives to improve disease resistance in poultry, swine, ruminants, fish, and shrimp, reducing reliance on antibiotics while supporting herd and flock immunity.
Targeted adjuvant solutions for salmon and shrimp farming, specifically formulated to prevent Salmonid Rickettsial Septicaemia (SRS) in salmon and rotavirus diarrhea in pigs through enhanced immune priming.
All veterinary adjuvants are manufactured by Desert King International under IPEC-certified GMP standards, with VuRoyal ensuring compliant global procurement, cold chain logistics, and end-to-end delivery.
As demand for safer, more effective animal vaccines accelerates globally, VuRoyal Pharmaceutical delivers IPEC-certified, saponin-based veterinary adjuvants sourced exclusively from Desert King International. Our products—QA-21, Vet-sap, and Ultra—are proven across poultry, swine, ruminant, and aquaculture markets, helping vaccine developers and animal health manufacturers meet rising immunization standards. Operating from Boston with a dedicated China distribution network, we provide compliant, cold-chain-capable logistics so your supply chain never becomes a bottleneck.
See how VuRoyal's adjuvant supply partnerships support vaccine developers and animal health manufacturers worldwide.
From Boston to Beijing, we deliver world-leading veterinary adjuvants with unmatched compliance, expertise, and supply chain reliability.
Sole authorized distributor of Desert King International's veterinary adjuvants in China, ensuring authentic, verified supply.
All products manufactured under IPEC-certified GMP standards, fully aligned with international pharmaceutical excipient regulations.
Serving US, China, and global markets with cold chain logistics and customs clearance expertise from our Boston headquarters.
Founders with decades in pharmaceutical R&D, backed by a team that has moderated leading international vaccine adjuvant science forums.
Experienced pharmaceutical professionals driving innovation in veterinary adjuvant supply.
Chief Executive Officer, Ph.D., MPA
Hao Wang leads VuRoyal Pharmaceutical as Chief Executive Officer, bringing a unique combination of scientific depth and strategic vision to the company's mission of delivering world-class vaccine adjuvants. Holding both a Ph.D. and a Master of Public Administration (MPA), Hao bridges the worlds of pharmaceutical science and business leadership with rare fluency. He has moderated high-profile scientific forums on vaccine adjuvants, including VuRoyal's inaugural QS-21 Forum held in Shanghai in March 2024 and the 2nd Online Technology Forum on Novel Vaccine Adjuvants in April 2025. Under his leadership, VuRoyal secured its exclusive partnership with Desert King International in October 2023 and achieved a landmark regulatory milestone in September 2025 with the successful agency application for QS-21 pharmaceutical excipient registration in China.
VuRoyal supplies three primary veterinary adjuvants sourced from Desert King International: QA-21 (lyophilized powder), Vet-sap (90% saponin powder), and Ultra (65–70% saponin powder). All products are derived from Quillaja saponaria and Yucca schidigera and are manufactured under IPEC-certified GMP standards for use in animal health vaccines and feed additive applications.
Speak with our pharmaceutical experts for product specifications, regulatory guidance, and supply inquiries.
VuRoyal serves veterinary adjuvant customers across the United States, China, and international markets with compliant, end-to-end supply chain solutions.
Boston, MA
Headquarters
China Market
Exclusive Territory
Global Supply
Reach
Contact us to confirm availability and logistics options for your country or market.
Recognized as a compliant pharmaceutical wholesaler by the FDA.
Certified for pharmaceutical quality management standards compliance.
Products sourced from IPEC-certified GMP manufacturer Desert King International.
Whether you're sourcing veterinary adjuvants for vaccine development, animal health manufacturing, or research, our team is ready to assist with product details, regulatory guidance, and logistics. Reach out and we'll respond promptly.
For immediate assistance, feel free to give us a direct call at +1 617-870-2690 You can also send us a quick email at
For immediate assistance, feel free to give us a direct call at +1 617-870-2690 You can also send us a quick email at