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2025 Expert Guide: Top 5 Chelated Mineral Feed Blocks and Tubs for Horses in the United States - Verified Options for Reliable Free-Choice Supplementation (Which One Suits Your Herd?)

Published on Monday, August 25, 2025

Slow-release feed blocks and tubs fortified with chelated minerals and electrolytes provide free-choice supplementation for pastured or stalled horses. These formats are popular in the United States because they deliver consistent mineral intake with minimal labor, support herd supplementation without daily dosing, and are formulated for weather resistance and palatability. Horse owners often choose chelated mineral blocks and tubs to improve mineral bioavailability, reduce mineral antagonism common in some soils and forages, and help manage hydration and recovery with added electrolytes. For American conditions where regional forage mineral profiles vary and winter stress increases nutritional needs, these products offer a convenient, cost-effective way to maintain herd mineral balance and overall condition.

Top Picks Summary

1. Best Balanced 12:12 Chelated Block

2. Best American EquiCube Chelated Mineral

3. Best Chelated Trace Mineral Block

4. Best Pellet Form Chelated Supplement

5. Best Salt & Mineral Block Plus Chelates

Top Picks Summary

  1. Purina Free Balance 12:12 Vitamin and Mineral Block
  2. Masterfeeds EquiCube Mineral Block
  3. Hoffman's Horse Mineral Block with Chelated Trace Minerals
  4. Mad Barn Omneity Mineral and Vitamin Pellets
  5. Brooks Feed B-W-S Block Plus
1
BEST BALANCED 12:12 CHELATED BLOCK

Purina Free Balance 12:12 Vitamin and Mineral Block

Purina Free Balance 12:12 Vitamin and Mineral Block
🏠 Local Product

Purina Free Balance 12:12 is a widely distributed, cost-effective free-choice block designed for broad use in equine populations, offering a balanced 12:12 calcium:phosphorus ratio and fortified vitamins with chelated trace minerals for improved bioavailability. Its market-leading advantage is broad availability and consistent formulation that typically costs less per horse-day than specialty options, while providing a dependable baseline compared with more targeted or pelleted products on this list.

4.3
★★★★☆

  • Balanced 12:12

  • Weather-resistant block

  • Balanced 12:12

  • Weather-resistant block

Review Summary

88%

"Generally praised for consistent formulation and good value, owners report steady intake and noticeable improvements in coat and overall condition; a few picky horses may leave it alone at first."

  • Picky-horse magnet

  • Free-choice vitamin and mineral block formulated specifically for horses with a 12:12 balance to support basic nutrient needs.

  • Picky-horse magnet

  • Free-choice vitamin and mineral block formulated specifically for horses with a 12:12 balance to support basic nutrient needs.

Enhanced Physical Well-Being

Time-Saving Convenience

Purina Free Balance 12:12 is a widely distributed, cost-effective free-choice block designed for broad use in equine populations, offering a balanced 12:12 calcium:phosphorus ratio and fortified vitamins with chelated trace minerals for improved bioavailability. Its market-leading advantage is broad availability and consistent formulation that typically costs less per horse-day than specialty options, while providing a dependable baseline compared with more targeted or pelleted products on this list.

  • Balanced 12:12

  • Weather-resistant block

  • Picky-horse magnet

  • Free-choice vitamin and mineral block formulated specifically for horses with a 12:12 balance to support basic nutrient needs.

  • Includes chelated trace minerals to improve bioavailability compared with inorganic sources.

  • Balanced 12:12

  • Weather-resistant block

  • Picky-horse magnet

  • Free-choice vitamin and mineral block formulated specifically for horses with a 12:12 balance to support basic nutrient needs.

  • Includes chelated trace minerals to improve bioavailability compared with inorganic sources.

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$25-45 USD

2
BEST AMERICAN EQUICUBE CHELATED MINERAL

Masterfeeds EquiCube Mineral Block

Masterfeeds EquiCube Mineral Block

Masterfeeds EquiCube is a robust mineral cube that emphasizes palatability and weather-resistant durability, often formulated with chelated trace minerals to support absorption in grazing horses. Its regional formulation and sturdy cube format reduce wastage compared with softer tubs and provide a mid-range price point advantage versus premium chelated blocks, making it attractive for American and northern operations where reduced spoilage and local support matter.

4.2
★★★★☆

  • Cube convenience

  • Slow-lick design

  • Cube convenience

  • Slow-lick design

Review Summary

82%

"Well-regarded by users for solid mineral balance and durability of the block, with many citing good acceptance by mixed groups of horses; some reviewers wished for clearer feeding guidance."

  • Stable gossip starter

  • Compressed cube-style mineral block that provides long-lasting, free-choice access for horses.

  • Stable gossip starter

  • Compressed cube-style mineral block that provides long-lasting, free-choice access for horses.

Enhanced Physical Well-Being

Time-Saving Convenience

Recreational Enjoyment

Masterfeeds EquiCube is a robust mineral cube that emphasizes palatability and weather-resistant durability, often formulated with chelated trace minerals to support absorption in grazing horses. Its regional formulation and sturdy cube format reduce wastage compared with softer tubs and provide a mid-range price point advantage versus premium chelated blocks, making it attractive for American and northern operations where reduced spoilage and local support matter.

  • Cube convenience

  • Slow-lick design

  • Stable gossip starter

  • Compressed cube-style mineral block that provides long-lasting, free-choice access for horses.

  • Fortified with chelated trace minerals and essential vitamins to support overall mineral balance.

  • Cube convenience

  • Slow-lick design

  • Stable gossip starter

  • Compressed cube-style mineral block that provides long-lasting, free-choice access for horses.

  • Fortified with chelated trace minerals and essential vitamins to support overall mineral balance.

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$45-75 USD

3
BEST CHELATED TRACE MINERAL BLOCK

Hoffman's Horse Mineral Block with Chelated Trace Minerals

Hoffman's Horse Mineral Block with Chelated Trace Minerals
🏠 Local Product

Hoffman's Horse Mineral Block is positioned as a premium chelated-trace-mineral block, formulated to maximize uptake of iron, zinc, copper and selenium candidates that can be antagonized in raw forage; this technical focus gives it an absorption edge for horses with marginal mineral status. Although typically priced higher than generic blocks, its laboratory-backed chelation strategy can reduce the need for extra supplementation and offers a targeted alternative to bulk or pelleted regimes on the list.

4.1
★★★★☆

  • Chelated absorption boost

  • Trace-mineral rich

  • Chelated absorption boost

  • Trace-mineral rich

Review Summary

80%

"Users like the chelated trace mineral profile and report improved hoof and coat quality over time, though a minority mention variable palatability between batches."

  • Barn bragging rights

  • Solid mineral block emphasizing chelated trace minerals for improved absorption and metabolic support.

  • Barn bragging rights

  • Solid mineral block emphasizing chelated trace minerals for improved absorption and metabolic support.

Enhanced Physical Well-Being

Skill Development & Mastery

Hoffman's Horse Mineral Block is positioned as a premium chelated-trace-mineral block, formulated to maximize uptake of iron, zinc, copper and selenium candidates that can be antagonized in raw forage; this technical focus gives it an absorption edge for horses with marginal mineral status. Although typically priced higher than generic blocks, its laboratory-backed chelation strategy can reduce the need for extra supplementation and offers a targeted alternative to bulk or pelleted regimes on the list.

  • Chelated absorption boost

  • Trace-mineral rich

  • Barn bragging rights

  • Solid mineral block emphasizing chelated trace minerals for improved absorption and metabolic support.

  • Contains key macro minerals and salt to help maintain electrolyte and mineral balance in grazing horses.

  • Chelated absorption boost

  • Trace-mineral rich

  • Barn bragging rights

  • Solid mineral block emphasizing chelated trace minerals for improved absorption and metabolic support.

  • Contains key macro minerals and salt to help maintain electrolyte and mineral balance in grazing horses.

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$20-40 USD

4
BEST PELLET FORM CHELATED SUPPLEMENT

Mad Barn Omneity Mineral and Vitamin Pellets

Mad Barn Omneity Mineral and Vitamin Pellets

Mad Barn Omneity delivers chelated minerals and vitamins in a pelleted form, giving precise, measurable daily dosing ideal for mixed groups or performance horses where consistent intake is critical. Technically superior for intake control compared with free-choice blocks and tubs, Omneity often carries a premium cost but can reduce overall supplementation variability and vet intervention costs relative to free-choice products listed here.

4.5
★★★★☆

  • Pellet precision

  • Complete Omneity mix

  • Pellet precision

  • Complete Omneity mix

Review Summary

90%

"Highly rated for palatability and measurable improvements in condition and appetite, many users appreciate the pellet form for consistent dosing; a few find it pricier than traditional blocks."

  • Trainer-approved treat

  • Pelleted vitamin and mineral supplement delivering chelated trace minerals in a rationed, mixable form.

  • Trainer-approved treat

  • Pelleted vitamin and mineral supplement delivering chelated trace minerals in a rationed, mixable form.

Enhanced Physical Well-Being

Time-Saving Convenience

Mad Barn Omneity delivers chelated minerals and vitamins in a pelleted form, giving precise, measurable daily dosing ideal for mixed groups or performance horses where consistent intake is critical. Technically superior for intake control compared with free-choice blocks and tubs, Omneity often carries a premium cost but can reduce overall supplementation variability and vet intervention costs relative to free-choice products listed here.

  • Pellet precision

  • Complete Omneity mix

  • Trainer-approved treat

  • Pelleted vitamin and mineral supplement delivering chelated trace minerals in a rationed, mixable form.

  • Designed for precision feeding and easy inclusion in daily rations for horses with specific nutritional needs.

  • Pellet precision

  • Complete Omneity mix

  • Trainer-approved treat

  • Pelleted vitamin and mineral supplement delivering chelated trace minerals in a rationed, mixable form.

  • Designed for precision feeding and easy inclusion in daily rations for horses with specific nutritional needs.

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$65-120 USD

5
BEST SALT & MINERAL BLOCK PLUS CHELATES

Brooks Feed B-W-S Block Plus

Brooks Feed B-W-S Block Plus
🏠 Local Product

Brooks Feed B-W-S Block Plus is a budget-minded, salt-balanced mineral block enhanced with chelated trace minerals to improve uptake while keeping unit price low for large herds. Its principal advantage is low cost per head and ease of use in extensive operations, offering many of the mineral benefits of premium blocks like Hoffman's but at a scale and price point that competes strongly with mainstream offerings such as Purina and Masterfeeds.

3.9
★★★☆☆

  • B-W-S fortify

  • Durable slow-lick

  • B-W-S fortify

  • Durable slow-lick

Review Summary

75%

"Viewed as a practical, economical block with acceptable mineral content and decent intake by most horses, but some long-term users note slower results compared with fortified supplements."

  • Pasture party starter

  • Combined salt and mineral block that includes chelated trace elements for improved uptake.

  • Pasture party starter

  • Combined salt and mineral block that includes chelated trace elements for improved uptake.

Enhanced Physical Well-Being

Recreational Enjoyment

Brooks Feed B-W-S Block Plus is a budget-minded, salt-balanced mineral block enhanced with chelated trace minerals to improve uptake while keeping unit price low for large herds. Its principal advantage is low cost per head and ease of use in extensive operations, offering many of the mineral benefits of premium blocks like Hoffman's but at a scale and price point that competes strongly with mainstream offerings such as Purina and Masterfeeds.

  • B-W-S fortify

  • Durable slow-lick

  • Pasture party starter

  • Combined salt and mineral block that includes chelated trace elements for improved uptake.

  • Formulated to support hoof, coat and metabolic health through balanced mineral delivery.

  • B-W-S fortify

  • Durable slow-lick

  • Pasture party starter

  • Combined salt and mineral block that includes chelated trace elements for improved uptake.

  • Formulated to support hoof, coat and metabolic health through balanced mineral delivery.

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$30-55 USD

Why Chelated Minerals and Slow-Release Formats Work - Evidence and Practical Takeaways

Chelated minerals are bound to an organic carrier, which research and industry guidance indicate can increase absorption compared with many inorganic mineral sources, especially under conditions where mineral interactions or poor forage quality limit uptake. Slow-release blocks and tubs promote steady, voluntary intake so horses receive supplemental minerals throughout the day rather than in a single bolus, which helps stabilize blood mineral levels and supports functions such as hoof growth, immune response, and electrolyte balance. Key authoritative references in equine nutrition include the NRC Nutrient Requirements of Horses and peer-reviewed studies comparing mineral forms and bioavailability; equine nutritionists also recommend pairing free-choice supplementation with forage testing and observation of consumption patterns.

Chelated mineral forms often show improved intestinal absorption and lower fecal excretion compared with some inorganic salts, improving efficiency of supplementation.

Slow-release delivery reduces peaks and troughs in intake, supporting consistent trace mineral and electrolyte availability for maintenance, performance, or recovery.

Research and practical guidance link adequate trace mineral status to better hoof integrity, coat quality, reproductive health, and immune function in horses.

Electrolyte-fortified tubs support hydration and recovery after work or heat exposure; free-choice formats help maintain intake when water or forage quality varies.

For best results combine free-choice blocks or tubs with regular forage analysis and veterinary or nutritionist guidance to match the product to life stage, workload, and regional soil deficiencies.

In USA, chelated mineral feed blocks and tubs are a practical solution for maintaining herd mineral balance across seasons. The five options reviewed here are Purina Free Balance 12:12 Vitamin and Mineral Block, Masterfeeds EquiCube Mineral Block, Hoffman's Horse Mineral Block with Chelated Trace Minerals, Mad Barn Omneity Mineral and Vitamin Pellets, and Brooks Feed B-W-S Block Plus. For many American horse owners, Purina Free Balance 12:12 Vitamin and Mineral Block stands out as the best choice for general use because of its balanced formulation, wide availability, and proven slow-release performance, while the other products offer strong alternatives for specific needs or regional preferences. I hope you found what you were looking for; use the search to refine by product features, herd size, or regional recommendations if you want to narrow or expand your options.

Discover More
  • Chelated Mineral Balancers for Performance Horses
  • Chelated Mineral Balancers for Broodmares and Foals
  • Chelated Mineral Balancers for Growing Horses
  • Chelated Mineral Formulations for Horses with Gut Sensitivities
  • Chelated Mineral Pellets for Horse Rations

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