What will happen if I take potassium iodide too long?

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If you take potassium iodide for a long time, you might notice burning in your mouth or throat, headaches and confusion. The longer you take it, the more you risk having some of the following complications:
  • increased watering of mouth
  • skin sores
  • unusual heartbeat
  • tiredness
  • metal taste in mouth
  • weakness or heaviness of legs
  • numbness, tingling or pain in your hands or feet
If you have any of these symptoms, call your doctor right away.