Iodine is an essential trace mineral that plays a central role in thyroid function, serving as a key building block for the thyroid hormones T3 and T4, which help regulate metabolism, energy production, and overall growth. Research suggests that adequate iodine intake is particularly important during pregnancy and early development, as it supports healthy cognitive function and neurodevelopment in infants. Studies indicate that iodine may also play a role in breast tissue health, though this area of research is still evolving. Commonly available in forms such as potassium iodide, sodium iodide, and kelp-derived sources, iodine remains one of the most widely studied minerals in public health, with global iodine deficiency historically recognized as a leading preventable cause of cognitive impairment worldwide.
Compare this supplementResearch suggests that iodine status plays a meaningful role in cognitive function, particularly during critical deve...
View studies →Research suggests that iodine plays a foundational role in thyroid hormone synthesis, and that both deficiency and ex...
View studies →The studies provided in this collection do not contain research directly examining iodine supplementation or iodine i...
View studies →The provided studies do not contain research directly examining iodine supplementation or iodine status in relation t...
View studies →Research suggests that iodine plays a recognized role in preconception and prenatal health, particularly in relation ...
View studies →Ashwagandha may increase thyroid hormone levels. Combining with iodine supplements could overstim...
View details →Calcium supplements should be separated from iodine/thyroid-related supplements for best absorption.
View details →Iron is required for thyroid hormone synthesis, and iron deficiency impairs thyroid function.
View details →Selenium is essential for thyroid hormone metabolism and works synergistically with iodine.
View details →These are commonly referenced dosage ranges for this supplement. They are not medical recommendations. Always consult a healthcare provider before supplementing.
| Form | Dose range | Frequency | Studied for | Source |
|---|---|---|---|---|
| Liquid | 12.5–50 mg | Daily | Metabolism support and whole-body iodine sufficiency (Lugol's/Iodoral protocols) | Used in orthomolecular and observational studies; high-dose iodine research |
| Tablet | 3–6 mg | Daily | Breast health and fibrocystic breast conditions | Used in clinical trials by Ghent et al. and Kessler et al. for fibrocystic breast disease |
| Tablet | 100–200 mcg | Daily | Cognitive function support in iodine-deficient populations | Common in clinical trials examining cognitive outcomes in children and adults |
| Tablet | 220–290 mcg | Daily | Pregnancy support and fetal neurodevelopment | Based on RCTs and IOM guidelines for pregnant and lactating women |
| Tablet | 150 mcg | Daily | Thyroid health and general iodine sufficiency (RDA for adults) | WHO/IOM recommended dietary allowance; widely used in supplementation trials |