Minerals
Iodine — timing, dose & interactions
Required to make thyroid hormones. Both too little and too much can cause thyroid dysfunction, especially in people with autoimmune thyroid disease.
Also known as Potassium iodide, Kelp
Timing
When to take it
Any time with or without food.
Dose note. Adult UL. Kelp products can contain far more iodine than labeled.
Interactions
Iodine with other supplements
Safety
Medications & health conditions
Extra iodine can disrupt thyroid treatment. Iodine supplements can push thyroid function in either direction. Only take them if your doctor agrees.
Iodine can trigger thyroid dysfunction. In autoimmune thyroid disease, excess iodine can cause hypo- or hyperthyroidism.
Buying guide
What to look for on the label
Iodine
- Potassium iodide at ≤150 mcg
- Avoid high-dose kelp unless supervised
FAQ
Common questions
When is the best time to take Iodine?
Breakfast or Lunch. Any time with or without food.
Should Iodine be taken with food?
It can be taken with or without food. Any time with or without food.
Can you take Iodine with Selenium?
Yes — the thyroid needs both, but don't exceed either upper limit. Keep doses moderate. With thyroid disease, involve your doctor.
Sources