Meilleurs compléments immunitaires pour petits animaux au Royaume-Uni en 2026

Volac Volostrum is a UK-based industry staple prized for standardized IgG concentrations and dairy-farm scale manufacturing that vets rely on for consistent neonatal immunity and post-illness recovery. Its technical strength is the traceable, batch-standardized quality that reduces variability compared with smaller suppliers, and while it can sit at a premium price point versus generic mixes, that cost is offset by predictable efficacy in herd-level programs. Volostrum is often chosen where supply stability and measurable antibody content are operational priorities compared to more niche or multi-ingredient competitors.

VetImmune is the market-leading, veterinarian-focused beta-glucan product because of its cost-effective dosing, broad veterinary distribution, and formulations optimized for animal compliance. It competes with Nutramune on accessibility and price, undercuts Imugen and Nutramune on cost per dose, and provides a middle ground between Oatwell's bulk, plant-based powder and Pet Wellbeing's multi-ingredient consumer formulations.

Johnson's Veterinary Vitamin Drops stand out for dosing precision and rapid bioavailability: the liquid formula contains stabilized vitamin C and tocopherol acetate for fast absorption and easy weight-adjusted administration in very small animals. Financially, the drops can be more expensive per millilitre but reduce waste and dosing error versus chewables, making them the preferred option when accurate, vet-prescribed antioxidant titration is required.

ImmunoG PRP is a UK-distributed colostrum powder designed to provide high IgG and platelet-rich plasma (PRP) growth-factor support for neonatal and immune-compromised small animals, making it a strong natural-passive immunity choice. Technically it favors rapid passive protection over modulation of adaptive memory, and financially it often offers bulk dosing and lower shipping costs for UK purchasers compared with imported transfer-factor isolates.

Protexin Pro-Kolin Advanced is a market-leading digestive support product that indirectly supports immune health through the gut-immune axis by combining stabilised probiotics with soothing agents. Its commercial strength is broad availability and an established vet and retail presence, making it a financially accessible option for owners prioritising gut-driven immune support over direct trace mineral supplementation. Versus the mineral-focused brands here, Pro-Kolin is technically optimized for gastrointestinal resilience rather than concentrated zinc/selenium delivery, so it is often used complementarily.