Iodine (Potassium Iodide) Iodine (Potassium Iodide)

Is iodine healthy for dogs?

Iodine is an essential trace mineral whose primary function is as a constituent of thyroid hormones — thyroxine (T4) and triiodothyronine (T3) — the hormones that regulate metabolic rate, energy production, growth, coat quality, and virtually every system in the canine body. Without adequate iodine, thyroid hormone synthesis is impaired and the consequences are wide-reaching.

In Boost, iodine is provided as potassium iodide, a stable and highly bioavailable inorganic iodine salt that is the standard form used in companion animal nutrition to ensure consistent and precise iodine provision.

An essential trace mineral provided as potassium iodide that serves as the obligate building block for thyroid hormone synthesis, supporting the regulation of metabolic rate, energy utilisation, body temperature, cardiac function, cognitive health, coat condition, and the normal development and function of virtually every organ system in dogs.

Thyroxine (T4) and triiodothyronine (T3) each contain four and three iodine atoms respectively. The thyroid gland is uniquely capable of concentrating iodine from the circulation for this purpose, and adequate dietary iodine is an absolute requirement for the synthesis of these hormones.

Thyroid hormones act as master metabolic regulators — controlling the rate of oxidative phosphorylation in cells, basal metabolic rate, body temperature homeostasis, protein synthesis, and the metabolic response to catecholamines, making adequate iodine nutrition fundamental to overall vitality and physical condition.

Iodine deficiency leads to hypothyroidism — characterised by weight gain, lethargy, cold intolerance, poor coat quality, and reproductive dysfunction in dogs. Hypothyroidism is one of the more commonly diagnosed hormonal conditions in dogs, and adequate dietary iodine is a prerequisite for normal thyroid function.

The thyroid also plays a role in immune function, with thyroid hormones influencing lymphocyte activity and the immune response to infection, connecting iodine nutrition to immune health beyond its metabolic role.

Science Informed Reasons to Include This Ingredient in Your Dog’s Diet:

1. Thyroid Hormone Synthesis — iodine is the essential substrate for T4 and T3 synthesis. Without adequate dietary iodine, the thyroid cannot produce sufficient hormone, impairing the metabolic regulation that underpins virtually all bodily functions.
2. Metabolic Rate Regulation — thyroid hormones control the rate of cellular energy production and basal metabolic rate. Adequate iodine supports normal energy utilisation, body weight maintenance, and physical vitality in dogs.
3. Body Temperature Homeostasis — thyroid hormones regulate thermogenesis and heat production in cells. Iodine sufficiency supports the ability to maintain normal body temperature and thermoregulatory function, particularly relevant in cold conditions.
4. Coat Quality and Skin Health — hypothyroidism is commonly associated with poor coat condition, excessive shedding, and skin changes in dogs. Adequate iodine supports normal thyroid function and contributes to the maintenance of healthy coat quality and skin integrity.
5. Cardiovascular Function — thyroid hormones influence heart rate, cardiac output, and vascular tone. Normal iodine status supports appropriate cardiovascular function and the responsiveness of the heart and circulation to physiological demands.
6. Neurological and Cognitive Health — thyroid hormones are essential for normal neurological development and function, supporting cognitive processes, reflexes, and neurological health throughout life.
7. Reproductive Health — adequate thyroid hormone levels supported by iodine are important for normal reproductive function, gestation, and fetal development, making iodine particularly relevant for breeding dogs.
8. Immune System Contribution — thyroid hormones influence lymphocyte proliferation and the immune response to infection. Adequate iodine status, by supporting normal thyroid function, contributes indirectly to healthy immune surveillance and responsiveness.