How long is iodine good for

Published by Elsevier Ltd. All rights reserved. Abstract Nowadays many products are available to combat infections and thus to promote wound healing. Thyroid hormones play an important role in a wide range of bodily functions, including metabolism, bone health, immune response, and development of the central nervous system CNS. This conversion is important for the thyroid to function properly.

Around 70 to 80 percent of iodine is found in the thyroid gland in the neck. The rest is in the blood, the muscles, the ovaries, and other parts of the body.

Iodine deficiency is rare in Western nations because salt is iodized. However, an estimated 2 billion people worldwide remain at risk for iodine deficiency, and about million people worldwide suffer from thyroid gland dysfunction.

The recommended intake of iodine from the age of 14 years is micrograms mcg for both males and females. During pregnancy, it is mcg, rising to mcg while breastfeeding. The amount of iodine in the soil where crops are grown, or where an animal is raised for meat will affect the amount of iodine in the food.

Produce from the sea is a good source of iodine. Levels of iodine in food vary according to where it comes from. In fruit and vegetables, it can range from 10 mcg per kilogram of dry weight to 1 gram. Multivitamins often contain iodine in the form of potassium iodide or sodium iodide.

Examples are turnips, cassava, soy, broccoli, cabbage, and other cruciferous vegetables. Cruciferous vegetables are also good sources of iodine.

However, cooking can inactivate these compounds, and the foods that contain them are nutritious in many ways, so avoiding them is not advised in the United States U. PVP-I is therefore recommended for use on infected wounds with low levels of exudate and wounds that need frequent dressing changes. Cadexomer iodine is a three-dimensional starch lattice formed into spherical microbeads containing 0.

These beads are highly absorbent and the pores of the lattice increase in size when they are exposed to exudate, allowing the gradual release of iodine Sundberg and Meller, All three proprietary forms of cadexomer iodine are made up of the same formulation and are available as a powder, paste dressing or ointment Thomas and Leigh, The slow release of the iodine in these preparations allows the wound to remain in continuous contact with it, whereas with a single exposure to a product such as PVP-I tulle the iodine is soon broken down Sundberg and Meller, The beads also absorb debris and can therefore be used to remove it from the wound bed, making cadexomer iodine a useful debriding agent.

In a study of 28 patients with venous leg ulcers, Steele et al found that it was effective in dirty, odorous ulcers and Apelqvist et al found it useful in controlling exudate in diabetic foot ulcers. Cadexomer iodine has also proven effective against methicillin-resistance S. The most common adverse effect is a burning or stinging sensation on application, local irritation, redness and eczema Holloway et al, Safety studies have demonstrated that cadexomer iodine poses minimal risk to thyroid function Skog et al, Cadexomer iodine is useful when treating infected wounds with moderate amounts of exudate and sloughy wounds.

Its ability to release iodine slowly means that it is recommended for use on chronic wounds where less frequent dressing changes are required. A number of published clinical trials on the use of PVP-I and cadexomer iodine support the use of iodine products, but much of this research has been carried out in laboratories or on animals and all of the studies involved use a wide variety of different preparations.

It works by killing bacteria in and around mild cuts and scrapes. Topical iodine should not be used on newborn babies.

It should also not be used for deep cuts, animal bites, or burns. Follow directions on the packaging for dosage information, and do not use for more than 10 days unless directed by your doctor. To reduce our risk for iodine deficiency , the National Institutes of Health NIH has the following recommendations for daily intake based on age:. In more severe cases, iodine toxicity may lead to coma. Iodine deficiency can only be diagnosed via urine tests.

Your doctor might recommend iodine supplements if your levels are low. The only way to know for certain is by checking your levels through a urine test. After that point, your doctor may recommend a supplement. Iodine is available in stronger formulas through a prescription. However, these are used for serious health conditions only. Iodine is an essential nutrient. People with access to iodized salt, seafood, and certain vegetables are able to get enough iodine from their diet.

In some cases, you may need iodine supplementation to help reduce your risk for iodine deficiency, or as a treatment for certain medical conditions, such as underactive thyroid or goiter.

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