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Dáil Éireann debate -
Tuesday, 25 Jun 2002

Vol. 553 No. 5

Written Answers. - Iodine Substitute.

Pat Carey

Question:

308 Mr. Carey asked the Minister for Health and Children if an iodine substitute exists and will be available for citizens who have an allergy to iodine in the event of a radioactive outbreak; and if he will make a statement on the matter. [14614/02]

In the event of a nuclear emergency resulting in the release of radioactive iodine into the environment stable iodine is an internationally recognised and highly effective counter measure to prevent the uptake of radioactive iodine by the thyroid gland.

Stable iodine tablets are currently being distributed to households nationwide as part of the National Emergency Plan for Nuclear Accidents. Each household will receive a packet containing six potassium iodate tablets BP 85mg, which is sufficient to provide a single dose for each member of an average sized household. The tablets are aluminium foil blister packed and sealed in a carton containing an information and instruction leaflet. Each carton will be delivered by An Post in a sealed firm envelope, which is labelled with appropriate warning statements and the name and address of the intended recipient.

With regard to alternative therapies, I am advised there is no substitute to the use of stable iodine as a prophylactic agent for this purpose. However, the two principal counter measures of sheltering and avoiding the consumption of contaminated foodstuffs would provide significant protection against exposure to all forms of radioactive fall out. It is important to remember that while these other counter measures protect against most sources of radiation and external exposure, iodine prophylaxis protects only against inhaled or ingested radioiodine.

Available evidence indicates that adverse effects associated with stable iodine are uncommon and generally minor. These may include dermatologic and sensitivity reactions. However, when potassium iodate is consumed as a prophylactic agent such adverse effects are unlikely because of its low dose and single use. Obviously in the circumstances of a nuclear emergency the benefits would far outweigh the risks involved.
In very rare instances there may be an allergic response to iodine including fever and joint pain, facial swelling and breathlessness, which may require medical attention. Sufficient medications are currently available on the market for intervention in such cases. Patients with existing thyroid disease should seek medical advice as should those with vasculitis related to deficiency of immune complement or those with dermatitis herpeiformis. Any person who suffers with any of these conditions will already be aware of their condition through their doctor.
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