Re: Contraindications, Precautions, Adverse Reactions when taking supplemental iodine/iodide/kelp

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http://www.pdrhealth.com/drug_info/nmdrugprofiles/nutsupdrugs/iod_0146.shtmlThank you for this link, . I've added it to Links > Iodine Sources > Contraindications, Precautions, Adverse Reactions

I'm copying below the entire section on "Contraindication, Precautions, Adverse Reactions". Everyone on the group should be familiar with this.

Zoe

CONTRAINDICATIONS, PRECAUTIONS, ADVERSE REACTIONS

CONTRAINDICATIONS

Iodide and iodine are contraindicated in those hypersensitive to iodide- and iodine-containing products.

PRECAUTIONS

Pregnant women and nursing mothers should avoid intakes of iodine (iodide) greater than RDA amounts. These amounts are 175 micrograms daily for pregnant women and 200 micrograms daily for nursing mothers. Use of iodide doses much higher than 175 micrograms daily by pregnant women may cause fetal damage. Use by nursing mothers of iodide doses much greater than 200 micrograms daily may cause rash and thyroid suppression in the infant.

Older people with nodular goiters are at risk of developing hyperthyroidism from use of potassium iodide and iodized salt.

Potassium iodide and iodized salt may exacerbate symptoms in some with autoimmune thyroiditis.

Children with cystic fibrosis appear to have an exaggerated susceptibility to the goitrogenic effect of high doses of iodide.

ADVERSE REACTIONS

Doses of iodide up to 1,000 micrograms daily are generally well tolerated. Pharmacological doses of iodide have caused a number of adverse reactions. The adverse reactions include hypersensitivity reactions, flare-up of adolescent acne, rashes, arrhythmias, central nervous system effects (confusion, numbness, tingling, weakness in the hands or feet), hypothyroidism, hyperthyroidism (Jod-Basedow phenomenon), parotitis (iodide mumps), thyroid adenoma and small bowel lesions.

Manifestations of hypersensitivity reactions include angioedema, symptoms resembling serum sickness (fever, arthralgia, eosinophilia, lymphadenopathy), cutaneous and mucosal hemorrhages, urticaria, thrombotic thrombocytopenia purpura (TTP) and fatal periarteritis. Nonspecific small bowel lesions manifested by stenosis with or without ulcerations have been associated with the use of enteric-coated potassium iodide. These lesions may cause hemorrhage, obstruction, perforation and death.

Chronic intake of pharmacological doses of iodides can lead to iodism. Iodism is characterized by frontal headache, pulmonary edema, coryza, eye irritation, skin eruptions, gastric disturbances and inflammation of the tonsils, larynx, pharynx and submaxillary and parotid glands.

The most common adverse effect of salt iodization is the development of iodine-induced hyperthyroidism (IIH). IIH affects mainly older people with nodular goiter. Another possibility is the exacerbation of autoimmune thyroiditis. Theoretically, salt iodization can induce hypothyroidism by acute blockage of the synthesis and secretion of thyroid hormones. Hypothyroidism, however, has not been reported with salt iodization. Also, allergic responses to salt iodization are rare. IIH may develop when iodine deficiency increases thyrocyte proliferation and mutation rates. This can lead to the development of hyperfunctioning autonomous nodules in the thyroid gland and hyperthyroidism following iodine supplementation. A recent study reported transient hyperthyroidism in one out of 32 young adults with goiter and hypothyroidism after receiving 200 micrograms daily of iodine.

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