← Knowledge base

Iodine

Trace minerals stored as mg/kg 4 shared products have a value

Sources

Iodised salt and commercial feeds usually meet iodine needs, and supplements are usually unnecessary except in severely iodine-deficient regions [1].

Toxicity

Toxicity has occurred in pregnant mares eating as little as 40 mg of iodine a day [1]. Goitre from excess iodine has occurred in mares and foals, several cases linked to dried kelp [1].

See also salt.

Sources

  1. 1. Liburt NR (peer reviewed by Boyle AG). Nutritional Requirements of Horses and Other Equids. MSD Veterinary Manual, Professional Version. Merck & Co., Inc., Rahway, NJ. Last full review February 2026. https://www.msdvetmanual.com/management-and-nutrition/nutrition-horses/nutritional-requirements-of-horses (accessed 2026-11-07)

Last edited 7 Nov 2026, 1:48 am