Iodine (I) is a trace mineral essential for thyroid hormone production, metabolic regulation, growth, and reproductive function. This Iodine (I) Refill Pack is designed specifically for use in a Free-Choice Mineral Buffet / Free-Choice Mineral Bar system so animals can self-select intake based on forage iodine levels, reproductive stage, environmental stress, and regional soil variability.
Sweet Medicine Farm offers Iodine as part of a Free-Choice Mineral Buffet / Free-Choice Mineral Bar, so animals can self-select based on real-time needs instead of a one-size-fits-all approach.
Why Iodine Matters in a Free-Choice Mineral Buffet
Iodine is required for the production of thyroid hormones (T3 and T4). These hormones regulate:
• Metabolic rate
• Energy utilization
• Body temperature regulation
• Growth and development
• Reproductive function
In practical herd management, this means iodine supports:
• Proper growth in foals, calves, kids, lambs, and piglets
• Healthy coat condition and skin integrity
• Fertility and normal reproductive cycling
• Normal fetal development
• Milk production efficiency
Because thyroid hormones influence nearly every metabolic process, iodine deficiency can affect multiple body systems at once.
In pasture-based systems, iodine levels in forage are highly variable and depend heavily on soil content and distance from coastal regions. Inland soils are frequently lower in iodine.
Regional Trends & Mineral Interactions
Iodine availability is influenced by geography and environmental conditions.
• Inland and mountainous regions often have iodine-deficient soils
• High rainfall can leach iodine from soil
• Stored hay reflects the iodine content present at harvest
• Seaweed exposure or coastal proximity can increase iodine levels
Common interactions:
• Iodine supports thyroid hormone synthesis
• Excess dietary calcium may influence absorption dynamics
• Goitrogenic plants (such as certain brassicas) may interfere with iodine utilization
• Selenium works alongside iodine in thyroid hormone activation
Selenium and iodine function together in thyroid metabolism. Selenium-dependent enzymes convert thyroid hormones into their active form. Imbalance in one mineral can influence the efficiency of the other.
A self-selection mineral program allows animals to regulate iodine intake relative to forage variability and reproductive demand.
What Low Iodine Availability May Look Like
Signs often develop gradually and may overlap with other mineral imbalances. Producers may observe:
• Rough or dull hair coat
• Reduced growth rates
• Reproductive inefficiency
• Weak newborns
• Enlarged thyroid (goiter) in severe deficiency
• Reduced milk production
Because iodine directly influences metabolic rate, deficiency may present as generalized poor thrift rather than a single isolated symptom.
Observation across breeding seasons and growth phases provides clearer insight than short-term evaluation.
Why the Free-Choice Mineral Buffet Approach Is Different
Iodine demand varies by species, reproductive stage, forage source, and regional soil mineral profile. Fixed premixes assume uniform intake across the herd.
This product is designed exclusively for Buffet-only use within a Free-Choice Mineral Buffet / Mineral Bar system.
It:
• Supports self-selection minerals across horses, goats, cattle, bison, deer, elk, and sheep
• Allows animals to regulate thyroid-supporting intake naturally
• Avoids forced, uniform supplementation
• Integrates into a broader herd mineral program
• Fits regenerative livestock systems where soil variability is expected
Important: This is for Buffet use only. Do not top-dress or mix into feed or water.
How to Use
Placement & Setup
• Offer in a clean, dry compartment within your Free-Choice Mineral Buffet
• Keep protected from moisture, manure splash, and contamination
• Place in a calm, low-traffic area where all animals can access comfortably
• Provide adequate space to prevent dominant animals from blocking timid herd members
Mineral access is behavioral ecology. Iodine intake should reflect biological demand rather than herd hierarchy.
Maintenance & Storage
• Refill regularly and maintain at least half-full compartments
• Refresh and stir if clumping occurs
• Maintain clean compartments to prevent cross-contamination
• Store refills in a cool, dry location away from direct sunlight
• Ensure fresh, clean water is always available
Transition Guidance
When first introducing a Free-Choice Mineral Buffet system, intake patterns may fluctuate as animals respond to thyroid-related mineral demand. Intake typically stabilizes within 2–6 weeks depending on forage iodine levels and prior mineral exposure.
Animals should have continuous, unrestricted access to the Free-Choice Mineral Buffet at all times so they can adjust intake based on biological demand, forage shifts, reproductive stage, and environmental stress.
Guaranteed Analysis & Ingredients
Rice Hull Carrier
Guaranteed Analysis (per lb):
Iodine – 1% (Min)
Salt – 32–33% (Min-Max)
Ingredients:
Salt, Potassium Iodide, Sodium Bentonite, Rice Hulls
Salt Carrier
Guaranteed Analysis (per lb):
Iodine – 1% (Min)
Salt – 82–83% (Min-Max)
Ingredients:
Salt, Potassium Iodide, Sodium Bentonite
Packaging Options
• Resealable Bags: 0.5 lb, 1 lb, 2 lb, 5 lb, 10 lb, 15 lb
• Bulk Boxes: 25 lb
Why Sweet Medicine Farm
Sweet Medicine Farm builds minerals around animal agency and practical herd management:
• Designed specifically for the Free-Choice Mineral Buffet / Mineral Bar system
• Clear labeling for simple, consistent refills
• Built to match real pasture variability
• Supports regenerative livestock and soil-conscious producers
This is not a premix strategy. It is a mineral framework built for dynamic pasture systems and biologically responsive livestock.