The human body requires iodine to develop and, especially, maintain proper metabolic balance. That being the case, it’s somewhat ironic that elemental iodine is toxic to humans. Typically, we do not come into contact with elemental iodine. Most solutions and all consumable forms occur in the iodide ion (Detoxadine, a form of nascent iodine is safe). A few examples of this would be potassium iodide and sodium iodide, the chemical compounds placed in salt in many countries throughout the world. Regardless, it’s a topic to be aware of.
Elemental iodine, however, damages tissue upon contact. High concentrations of iodine solutions (even those containing iodide) can create immediate chemical burns… with the potential for much greater complications. It’s for that reason that warnings always state not to induce vomiting if ingested (unless otherwise advised by poison control).
Overexposure and overdose can occur with constant, repeated exposure to high concentrations of iodine. An individual could come in contact with high concentrations from tinctures of iodine, such as when using it as an antiseptic or disinfectant. Studies have also shown that iodate (an alternative form of iodine used as a salt additive) ingested in large quantities can lead to corrosive effects in the gastrointestinal tract. [1]
Other sources of iodine that can lead to poisoning are Amiodarone/Cordarone (an anti-arrhythmia drug), Lugol’s solution, Pima syrup, potassium iodide, and radioactive iodine used for certain medical tests or thyroid disease.
Symptoms of an Iodine Overdose
Some symptoms of an iodine overdose can be abdominal pain, delirium, fever, vomiting, and shortness of breath. More serious symptoms can occur, depending on the way the iodine overdose occurred. Here is a brief summary of ways elemental or concentrated iodine overdose can occur and its resulting effects. [2] Read more
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