With the long-term administration of high doses of the drug (more than 300 micrograms per day), iodine-induced hyperthyroidism may develop.
When treated with high doses of iodine (more than 1000 micrograms per day), in some cases iodine-induced goiter and hypothyroidism may develop.
Chronic overdose can lead to the phenomenon of "iodism": metallic taste in the mouth, swelling and inflammation of mucous membranes (rhinitis, conjunctivitis, gastroenteritis, bronchitis); acne; dermatitis; swelling of the salivary glands; temperature increase; irritability.
Treatment for acute intoxication: gastric lavage with starch solution, protein or 5% sodium thiosulfate solution until all traces of iodine are removed.
Symptomatic therapy of disturbance of water balance, electrolyte balance, anti-shock therapy.
Treatment for chronic intoxication: drug withdrawal.
Treatment of iodine-induced hypothyroidism: drug withdrawal, normalization of metabolism with the help of thyroid hormones.
Treatment of iodine-induced thyrotoxicosis: mild forms of treatment are not required; when the forms are expressed, a thyrostatic therapy is required (the effect of which is always delayed). In severe cases (thyrotoxic crisis), intensive therapy, plasmaphoresis and thyroidectomy are necessary.