Iodine is the raw material for T3/T4. Iron activates the enzyme that incorporates iodine. Selenium converts inactive T4 into active T3. Missing any one creates a bottleneck the other two cannot compensate for.
This stack requires three separate supplements. Iodine and selenium are essential; iron is included if directed by your doctor.
Potassium iodide provides the raw building block for thyroid hormones T3 and T4. Do not exceed 150-200 mcg unless directed by your doctor.
View on Amazon →Selenomethionine powers the deiodinase enzymes that convert inactive T4 into active T3. 200 mcg is the research-backed dose for thyroid support.
View on Amazon →Ferrous bisglycinate activates thyroid peroxidase (TPO), the enzyme that incorporates iodine. Only add iron if blood work confirms deficiency.
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Coming soonCritical: If taking levothyroxine or any thyroid medication, iron must be taken at least 4 hours apart. Iron significantly reduces medication absorption. Excess iodine can worsen Hashimoto's. Work with your doctor on dosing for all three.
How to take this stack: Take 150-200 mcg iodine and 200 mcg selenomethionine together in the morning with food. If directed by your doctor, take 25-45 mg ferrous bisglycinate at a separate meal, at least 4 hours from thyroid medication. Selenium toxicity occurs above 400 mcg/day; do not exceed 200 mcg. Benefits accumulate over weeks to months of consistent use.
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