Iodine

Iodine is a Mineral supplement available in 1 form.

Not all forms of Iodine are equal. The form you choose determines how much Iodine actually reaches your tissues, and the difference between the best and worst forms can be substantial. Potassium iodide is the most stable, water-soluble, and bioavailable inorganic iodine form for supporting thyroid hormone synthesis. Research supports potassium iodide as the preferred pharmaceutical-grade iodine source for promoting healthy thyroid function, metabolic rate, and cognitive development when iodine intake is insufficient.

Iodine (as Potassium Iodide) Preferred (Preferred Form) has a bioavailability rating of good absorption.

Iodine as potassium iodide is the most bioavailable and well-studied supplemental iodine form. It is essential for thyroid hormone synthesis — without adequate iodine, the thyroid cannot produce T3 or T4. Research demonstrates widespread subclinical iodine insufficiency in many populations, making supplementation important for thyroid-dependent metabolic and cognitive function.

Oral potassium iodide: fractional iodine absorption measured in healthy iodine-replete adults; form-specific bioavailability documented PMID: 31788697

Iodine (as Potassium Iodide) is classified as Preferred Form by FormulaForge — our top recommendation for Iodine. It carries a bioavailability rating of good absorption, meaning more of the active compound reaches your tissues per dose unit compared to lower-rated forms.

When choosing a Iodine supplement, read the label for the specific form name — that is what determines how much you actually absorb. Preferred Forms have the strongest research-backed evidence for efficient absorption.

Other forms may be appropriate depending on individual goals, cost considerations, and your healthcare provider’s guidance. The best form for you depends on your specific health needs.

Individual dose requirements vary based on health goals, body weight, and existing nutrient intake. Your healthcare provider can help you determine an appropriate amount of Iodine for you.

Side Effects: Consult your healthcare provider regarding tolerability, particularly at higher doses.

These statements are based on structure/function research and have not been evaluated by the Food and Drug Administration. This information is not intended to diagnose, treat, cure, or prevent any disease. Always consult a qualified healthcare provider before starting or changing a supplement regimen.

The following studies and findings inform FormulaForge classifications for Iodine:

Oral potassium iodide: fractional iodine absorption measured in healthy iodine-replete adults; form-specific bioavailability documented PMID: 31788697