This report describes a case of an equine presenting classic clinical signs and hormonal profile related to primary hypothyroidism due to the continued systemic administration of 60g/day of potassium iodate. Remission of the problem required the elimination of iodine source, which led to a gradual reduction in the clinical manifestation. This case report contribute with the iatrogenic hypothyroidism study in adult horses and warn veterinarians to the possible undesirable collateral effects of iodine therapies.
horse; hypothyroidism; iodine excess
