Side-by-side comparison of mechanisms, dosing, interactions, and stacking potential.
| Iodine (from Kelp or Potassium Iodide) | Molybdenum | |
|---|---|---|
| Category | Minerals | Minerals |
| Standard Dose | 150-300 mcg daily (RDA: 150 mcg; upper range for optimization) | 75-250 mcg daily |
| Timing | Morning with food. | With meals. Often included in multimineral formulas. |
| Cycle Duration | ongoing | ongoing (via multimineral) |
| Evidence Level | strong_human | moderate_human |
Iodine is the essential substrate for thyroid hormone synthesis. Thyroid peroxidase (TPO) uses iodine to iodinate tyrosine residues on thyroglobulin, producing monoiodotyrosine (MIT) and diiodotyrosine (DIT), which couple to form T4 (3,5,3',5'-tetraiodothyronine) and T3 (3,5,3'-triiodothyronine). Iodine is concentrated by the sodium-iodide symporter (NIS) in the thyroid, breast tissue, gastric mucosa, salivary glands, and choroid plexus. Beyond thyroid function, iodine has direct antimicrobial properties, modulates immune function, and may play a role in breast tissue health via iodolactone-mediated apoptosis.
150-300 mcg daily (RDA: 150 mcg; upper range for optimization)
Morning with food.
ongoing
Molybdenum is the essential cofactor for three human enzymes: sulfite oxidase (converts toxic sulfite to sulfate — critical for sulfur amino acid metabolism), xanthine oxidase (purine catabolism to uric acid), and aldehyde oxidase (aldehyde detoxification, drug metabolism). The molybdenum cofactor (Moco) requires molybdopterin as a carrier. Sulfite oxidase is the most clinically significant — sulfite accumulation is neurotoxic. Molybdenum also plays a role in the metabolism of sulfur-containing amino acids and may support phase I/II detoxification pathways.
75-250 mcg daily
With meals. Often included in multimineral formulas.
ongoing (via multimineral)
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