Stack

Iodine

Also known as Potassium iodide, Sodium iodide, Kelp iodine

What it is: Essential trace mineral for thyroid hormone synthesis
What it does: Required for production of T3 and T4 thyroid hormones that regulate metabolism, growth, and development
Status: Widely used supplement
Evidence: High. Extensive human data.
Uses: Thyroid support; pregnancy; regions with low soil iodine

Caution. Excess can worsen thyroid function or trigger autoimmunity; avoid high doses without testing.

Summary

Iodine is an essential component of thyroid hormones T3 and T4, which set basal metabolic rate and support growth and neurodevelopment. It is commonly supplemented in pregnancy and in areas with low dietary iodine, and is also found in kelp and iodized salt. Both deficiency and excess can disrupt thyroid function, so dosing is best aligned with dietary intake and individual risk.

Checked Jul 19, 2026.

Keep a record of Iodine in Stack

Stack logs each dose you take, tracks what is left in the vial or bottle and shows how you kept to your plan. It records what you choose and does not recommend anything. Everything stays on your phone, with no account.

Get Stack on Google Play

More supplements

SeleniumWidely used · moderate evidence Vitamin K2Widely used · moderate evidence Vitamin EWidely used · low to moderate evidence Lutein + ZeaxanthinWidely used · moderate evidence Beetroot / Dietary NitrateWidely used · moderate evidence

This entry summarises published information in plain language. It is not medical advice, a dosing recommendation or a substitute for a qualified healthcare professional. Many peptides are not approved for human use, and legal status varies by country. Check anything you rely on against primary sources.