Calcium Iodide
Last updated: February 10, 2026
Table of Contents
Quick Summary
Calcium Iodide Calcium iodide is an iodine supplement used in pet foods to provide essential iodine for thyroid hormone production.
What It Is
Calcium iodide is an iodine supplement used in pet foods to provide essential iodine for thyroid hormone production.
Compare to Similar Ingredients
- vs. calcium iodate: Both provide iodine and calcium. Calcium iodide is less stable and rarely used, while calcium iodate is more shelf-stable. Iodine is essential for thyroid function.
Why It's Used in Dog Products
Manufacturers include calcium iodide in dog food, treats, and supplements for several reasons:
- Essential for thyroid hormone synthesis
- Supports metabolic rate and energy
- Necessary for growth and development
- Regulates body temperature
- Bioavailable iodine source
Nutritional Profile
Bioavailability: Good absorption and utilization - iodide is readily absorbed and transported to thyroid
Quality Considerations
When evaluating calcium iodide in dog products, it's important to understand chelated versus inorganic forms, bioavailability, and balanced ratios with other minerals. This ingredient's quality and appropriateness can vary significantly based on sourcing, processing, and the specific formula it's used in.
Calcium iodide is a bioavailable form of iodine, an essential trace mineral required for thyroid hormone production. Iodine deficiency causes thyroid dysfunction (goiter, hypothyroidism), while excess can also cause thyroid issues. Proper iodine supplementation is critical for metabolic health. Calcium iodide is less commonly used than potassium iodide but equally effective. Required in complete and balanced pet foods.
Potential Concerns
While calcium iodide can be appropriate in dog nutrition, pet owners should be aware of mineral imbalances, interactions, and appropriate levels for different life stages. Individual dogs may respond differently to the same ingredient based on their health status, age, and sensitivities.
Calcium iodide is an essential mineral supplement providing necessary iodine for thyroid function. Iodine is critical for metabolism and overall health, and supplementation ensures adequate intake. We have no concerns with appropriate iodine supplementation - it's required for nutritional completeness. The calcium iodide form is bioavailable and effective. This indicates proper mineral fortification in the food.
Frequently Asked Questions
Is calcium iodide safe for dogs?
Yes, calcium iodide is safe for dogs when used appropriately in properly formulated dog food. Safe at proper levels. Excess can cause hyperthyroidism. Follow AAFCO guidelines. As with any ingredient, individual dogs may have sensitivities, so monitor for any adverse reactions when first introducing products containing this ingredient.
What does calcium iodide do in dog products?
Iodine supplement providing essential iodine for thyroid function and metabolism. Dog food manufacturers include this ingredient to provide essential for thyroid hormone synthesis and support metabolic rate and energy.
Can dogs get too much calcium iodide?
Yes, excessive amounts of vitamins and minerals can cause health issues. However, properly formulated dog foods and supplements are designed to provide appropriate levels. Toxicity typically only occurs from over-supplementation or improper dosing. Always follow feeding guidelines and consult your vet before adding supplements.
Is calcium iodide natural or synthetic?
Calcium Iodide in dog food and supplements can be either natural or synthetic. Both forms can be effective, though bioavailability may differ. Premium brands often specify the form used. Natural sources may be more expensive but aren't necessarily superior—what matters most is the total amount and how well your dog absorbs it.
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