Most people in developed countries get plenty of iodine from their diet—specifically from fish, dairy, and iodized salt. You might consider a supplement only if you fall into one of these categories: Iodine - CVS Pharmacy

You can also buy iodine topically as a liquid tincture or First Aid Antiseptic for cleaning minor cuts. 2. Who Actually Needs a Supplement?

The most common and highly absorbable form found in pills and liquid drops.

Iodine is available in several forms without a prescription: