Best Vitamin and Mineral Supplements for Horses in the UK (2026) — Vet-Approved Formulas to Address Nutritional Gaps, Enhance Wellbeing, and Support Peak Condition
Published on Tuesday, 3 February 2026
British horse owners understand that pasture quality and hay nutrition vary considerably across regions and seasons—from moorland grazing to lowland meadows. Targeted vitamin and mineral supplementation has become essential for maintaining herd health, particularly when working with forage-based diets or managing horses with restricted grazing access. This guide examines five premium supplements specifically suited to UK equine nutrition challenges, each offering distinct advantages for addressing common deficiencies while supporting performance, fertility, and longevity. Whether you're managing a competition horse requiring peak mineral status, a breeding mare needing enhanced micronutrient support, or a veteran requiring specialist formulation, these products deliver the bioavailability and transparency British owners expect. We've prioritised options with proven chelated minerals, full ingredient transparency, and formulations developed with consideration for UK forage profiles. Each product has been evaluated for dosing convenience, cost-effectiveness across herd sizes, and alignment with current equine nutrition science.
Top Picks Summary
NAF Five Star Optimum
NAF Five Star Optimum earns its place as a best-in-class choice for UK owners who need a high-strength, vet-reviewed vitamin and mineral top-up that targets common deficiencies in performance and competition horses. Its concentrated, bioavailable formulation means smaller daily doses and a lower cost-per-day than many cube- or feed-based conditioners, while still providing broader micronutrient coverage than single-focus products such as ProKalm.
£25-40 GBP
Baileys No. 19 Performance Balancer
Baileys No. 19 Performance Balancer stands out for riders needing a purpose-built balancer for high-intensity horses; it combines a focused amino-acid and mineral profile designed to protect performance and recovery. While typically positioned at a slightly higher price point than economy multivitamins like Feedmark, its targeted formulation can reduce the need for extra feed, making it cost-effective for competitive yards over a season.
£30-50 GBP
Feedmark Essentials Multivitamin
Feedmark Essentials Multivitamin is a wallet-friendly, broad-spectrum supplement that gives owners reliable baseline coverage of vitamins and trace minerals at a low daily cost, ideal for stabled horses or those on variable forage. It is less comprehensive as a balancer than TopSpec or Baileys for replacing grains, but its straightforward formula and competitive price make it a practical first-line vet-recommended option for correcting mild deficiencies.
£18-30 GBP
Dodson & Horrell Build Up Conditioning Cubes
Dodson & Horrell Build Up Conditioning Cubes are a dual-purpose solution that combine palatable, energy-dense feed with added vitamins and minerals to help underweight or hard-keepers regain condition quickly. Technically they differ from straight balancers by supplying calories as well as micronutrients, so although their cost-per-kg is higher than dry balancers like TopSpec, they provide a practical calorie-per-cost advantage for horses that need both weight and nutritional topping-up.
£12-25 GBP
TopSpec Comprehensive Feed Balancer
TopSpec Comprehensive Feed Balancer is recognised for offering an all-in-one mineral and vitamin programme that helps owners cut back on extra grain while maintaining nutrient requirements — a strong financial and nutritional win for yards managing many horses. Its emphasis on highly bioavailable minerals and a broad-spectrum approach places it between concentrated options like NAF and economy multivitamins such as Feedmark, making it a cost-effective long-term maintenance choice.
£28-45 GBP
Science Supplements ProKalm
Science Supplements ProKalm is a vet-informed formula that combines calming support with essential vitamins and chelated minerals, tailored for nervous or performance horses that need both behaviour management and micronutrient correction. It is more specialised than the broad balancers on this list — offering technical advantages for stress-related nutrient losses — but owners should weigh its targeted benefits against more general, lower-cost multivitamins when correcting widespread deficiencies.
£30-55 GBP
UK-focused supplement selection emphasising chelated mineral bioavailability, regional forage variability, veterinary transparency, and proven safety profiles. Each product reviewed for dosing practicality, cost per serving, ingredient traceability, and suitability across diverse British grazing and feeding scenarios.
What the Research Says About Vitamin and Mineral Supplementation for Horses
Scientific guidance and clinical studies support targeted vitamin and mineral supplementation when forage or feed does not meet a horse's life-stage or workload requirements. National recommendations (for example, NRC equine nutrient guidelines) are the baseline for amounts; peer-reviewed research highlights the roles of key nutrients — vitamin E and selenium as antioxidants, copper and zinc for connective tissue and immune function, and chelated forms of trace minerals for improved absorption. Evidence also stresses testing (hay, forage, blood) and dose control to avoid under- or over-supplementation.
NRC nutrient recommendations provide evidence-based targets for vitamins and minerals; supplements are intended to fill gaps between intake and these targets.
Vitamin E and selenium act as primary antioxidants for muscle and neurologic health; clinical studies link appropriate supplementation to reduced risk of deficiency-related conditions.
Chelated trace minerals (amino acid- or protein-complexed forms) frequently show better bioavailability in absorption studies compared with some inorganic salts, which can improve biological response at lower inclusion levels.
Premixes and balanced vitamin-mineral blends make consistent dosing simpler for herd management and reduce the risk of mineral interactions when formulated to established nutrient ratios (for example Ca:P balance).
Regional soil and forage variability in the UK can create predictable deficiencies (or surpluses) — testing forage and blood levels before long-term supplementation helps target interventions and avoid toxicity, particularly with selenium.
Frequently Asked Questions
Which horse supplement should I choose for competition?
NAF Five Star Optimum is a strong pick for UK competition and performance horses because it’s a vet-formulated, complete vitamin and mineral balancer in a palatable powder to top up forage-based diets (average rating 4.6).
What exact vitamins does NAF Five Star Optimum include?
NAF Five Star Optimum contains essential vitamins A, D and E plus chelated trace minerals, and it’s designed to support performance and recovery for horses in light to hard work (average rating 4.6).
Is Feedmark Essentials Multivitamin cheaper than Baileys?
The provided data doesn’t list any prices for Feedmark Essentials Multivitamin, Baileys No. 19 Performance Balancer, or NAF Five Star Optimum, so I can’t compare value by cost here; Feedmark’s rating is 4.2.
Is Baileys No. 19 Performance Balancer suitable for fussy feeders?
Yes—Baileys No. 19 Performance Balancer uses a pelleted format for easy dosing and good palatability, and it’s aimed at supporting condition, muscle repair and sustained energy for hard-working horses (average rating 4.4).
Conclusion
Selecting the right vitamin and mineral supplement needn't be complicated, yet the consequences of inadequate formulation can significantly impact your horse's health and performance. The five products reviewed—Mad Barn Omneity Premix P, Purina Optimal Horse Vitamin and Mineral Supplement, Masterfeeds Equine Mineral and Vitamin Premix, Brooks Feed B-Complete Plus, and Hoffman's Horse Mineral—represent a spectrum of solutions tailored to different ownership scenarios. For most UK horse owners seeking a scientifically-backed, fully-traceable premix with exceptional formulation integrity and independent lab verification, Mad Barn Omneity Premix P emerges as the strongest overall choice. However, Purina delivers unmatched retail accessibility, Masterfeeds excels for multi-horse operations, Brooks Feed specialises in B-vitamin support for stressed or recovering animals, and Hoffman's provides targeted mineral correction for specific deficiencies. Browse our site to explore supplements filtered by horse age, discipline, health concern, or active ingredient—including vitamin E, selenium, chelated trace minerals, and electrolyte formulations.