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.
Symptoms: staining the mucous membranes in brown, reflex vomiting (if the food contains starch-containing components, vomit becomes blue), abdominal pain and diarrhea (possibly melena).
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.