Best Iodine for General Health
Top 10 products ranked
Clinical dose: 150–500 mcg
Why Iodine for General Health
For general health support, Iodine is a supporting ingredient backed by research. Critical building block for thyroid hormones T3 and T4, which regulate metabolism, growth, and development. Kelp-based supplements can provide highly variable iodine content—standardized potassium iodide is more reliable for consistent dosing.
Effective dosing
Most evidence supports 150–500 mcg of iodine daily. Common kelp and iodine supplement range. Products below this range may not deliver meaningful results.
The evidence behind iodine
Research supporting iodine for general health is rated as strong. Essential for thyroid hormone synthesis; WHO estimates 2 billion people worldwide have insufficient intake Learn more

Thorne
Men's Multi 50+
potassium iodide · 225 mcg

Naka Platinum
Bioactive Multi for Women, 120 Veggie Caps
potassium iodide · 150 mcg

California Gold Nutrition
Daily Multivitamins
potassium iodide · 150 mcg

Life Extension
Two-Per-Day Multivitamin, 120 Tablets
potassium iodide · 150 mcg

Nature's Bounty
Women's Multi, Complete Multivitamin, High Potency
potassium iodide · 150 mcg

Life Extension
Two-Per-Day Multivitamin, V2, 120 Tablets
potassium iodide · 150 mcg

NOW
Special Two
potassium iodide · 150 mcg

21st Century
Sentry Adults
potassium iodide · 150 mcg

21st Century
One Daily Women's
potassium iodide · 150 mcg

Nature's Way
Alive! Women's Premium Gummy Multivitamin
potassium iodide · 150 mcg