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  • Basic Info
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Generic: potassium iodide
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It is used to treat certain thyroid conditions

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What is this medicine?

POTASSIUM IODIDE, KI (puh TAS ee uhm AHY uh dahyd) is used to treat certain thyroid conditions. It is also used to prevent thyroid damage after a nuclear radiation emergency.

What should I tell my health care provider before I take this medicine?

They need to know if you have any of these conditions:
  • Addison's disease
  • dermatitis herpetiformis
  • heart disease
  • high levels of potassium in the blood
  • hypocomplementemic vasculitis
  • kidney disease
  • myotonia congenita
  • thyroid disease
  • tuberculosis
  • an unusual or allergic reaction to potassium iodide, iodine, other medicines, foods, dyes, or preservatives
  • pregnant or trying to get pregnant
  • breast- feeding

How should I use this medicine?

Take this medicine by mouth. Follow the directions on the package or prescription label. Mix the dose in one glass of water, fruit juice, or milk. Take with food or milk. Use a specially marked spoon or container to measure each dose. Ask your pharmacist if you do not have one. Household spoons are not accurate. Take your medicine at regular intervals. Do not take your medicine more often than directed.

Talk to your pediatrician regarding the use of this medicine in children. Special care may be needed.

What if I miss a dose?

If you miss a dose, take it as soon as you can. If it is almost time for your next dose, take only that dose. Do not take double or extra doses.

What may interact with this medicine?

Do not take this medicine with any of the following medications:
  • other medicine for the thyroid
  • propylthiouracil, PTU

This medicine may also interact with the following medications:

  • certain diuretics like spironolactone, triamterene
  • certain medicines for high blood pressure or heart failure like enalapril
  • lithium
  • potassium supplements

What should I watch for while using this medicine?

Visit your doctor for regular checks ups. You may need blood work done while you are taking this medicine.

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