(2003; 14 pages)
IODINE - Some products contain more than the RDA
Canada. Health Canada is advising consumers against using some products containing iodine (SEAVITE Premium Atlantic Kelp Blend and SEAVITE Premium Atlantic Kelp tablets) since these products, when consumed according to the label instructions, can provide 25 times the recommended daily allowance (RDA) of iodine for adults; this could lead to serious adverse health consequences. The RDA for iodine ranges from 90 micrograms per day for children aged 1-8 years to 150 micrograms per day for adults. Excessive iodine intake could lead to thyroid disorders and in turn to heart problems. Three reports of serious adverse events have been associated with the use of these products; one patient required hospitalisation. The excessive iodine can manifest itself as an under- or over-active thyroid. Individuals especially sensitive to the toxic effect of excess iodine include children of all ages, pregnant women, foetuses and newborns of breast feeding women and those under previous or current supervision for thyroid disease. Individuals taking amiodarone, a prescription drug for treating heart rhythm disorders may also be at increased risk. Health Canada warns that concerned consumers should talk to their healthcare provider.
Health Canada Warnings/Advisories, 8 May 2003. Available from URL: http://www.hc-sc-gc.ca