Seleno-Iodide by Ortho Molecular Products – Thyroid and Antioxidant Support
Seleno-Iodide by Ortho Molecular Products provides a synergistic blend of iodine and selenium designed to support healthy thyroid support and antioxidant status. Each capsule delivers 3 mg of iodine from potassium iodide alongside 100 mcg of selenium sourced from SelenoExcell®, a highly bioavailable, organically bound selenium yeast. These two trace minerals work as partners in the body, since both are essential building blocks for producing and metabolizing thyroid hormones.
Iodine and selenium concentrate heavily in the thyroid gland and, in the case of iodine, in breast tissue as well. Seleno-Iodide was formulated to help maintain healthy iodine levels while providing selenium's antioxidant contribution, supporting a foundational approach to thyroid and tissue health for adults whose diets may not reliably supply these trace minerals.
Key Seleno-Iodide Benefits
- Supports healthy thyroid support and thyroid hormone synthesis
- Provides 3 mg of iodine from potassium iodide
- Delivers 100 mcg of highly bioavailable selenium (SelenoExcell®)
- Supports antioxidant status and helps reduce oxidative stress
- Supports healthy breast tissue through iodine's role in mammary health
How Seleno-Iodide Works
Iodine is one of the core building blocks of the thyroid hormones thyroxine (T4) and tri-iodothyronine (T3), with T3 acting as the most metabolically active form that binds receptors in the liver and brain to help regulate gene expression. Beyond its role in hormone synthesis, iodine also functions as an antioxidant, acting as an electron donor that helps neutralize free radical damage in tissues including the thyroid, eyes, and gastrointestinal lining. Selenium works alongside iodine as a required cofactor for the iodothyronine deiodinase enzymes, which convert the less active T4 into the more active T3. SelenoExcell® provides selenium in an organically bound, highly bioavailable form close to what is found in nature, supporting the enzymatic machinery that keeps thyroid hormone conversion running smoothly.
Key Functional Ingredients Include:
- Iodine (from Potassium Iodide): An essential trace mineral required for the synthesis of thyroid hormones T3 and T4, and studied for antioxidant activity in thyroid and mammary tissue.
- Selenium (as SelenoExcell®, a High Selenium Yeast): A 2025 randomized controlled trial found selenomethionine-enriched yeast supplementation supported thyroid hormone parameters in hypothyroid patients; selenium is a required cofactor for enzymes that convert T4 to the active T3 hormone.
Seleno-Iodide Is Formulated For
- Adults seeking foundational thyroid support nutrients
- Individuals wanting a bioavailable selenium and iodine combination
- Those interested in supporting antioxidant status alongside thyroid health
Supplements support your health but do not replace a balanced diet. Always check with your healthcare practitioner before starting a new supplement. Ready to find the right fit? Access Now to schedule a consultation with our licensed wellness professionals at Holistic Health Partners. You may also want to explore our Thyroid, Anti-Oxidants, and Ortho Molecular Products collections.
Recommendation: Ortho Molecular Products suggests taking 1 capsule per day or as recommended by your health care professional.
Serving Size: 1 Capsule
Servings Per Container: 90
Iodine (from Potassium Iodide) ... 3 mg
Selenium (as SelenoExcell® (a High Selenium Yeast)) ... 100 mcg
Other Ingredients: Natural Vegetable Capsules, Microcrystalline Cellulose, Magnesium Stearate, and Silicon Dioxide.
Does Not Contain: Gluten, artificial colors and flavors.
Warnings/Cautions: If you are pregnant or nursing, consult your health care professional before taking Seleno-Iodide.
Frequently Asked Questions About Seleno-Iodide
What are the benefits of Seleno-Iodide?
Seleno-Iodide provides two trace minerals that work together in thyroid hormone physiology and antioxidant defense. Iodine supplies material used to make thyroxine and tri-iodothyronine, while selenium supports deiodinase enzymes that convert the less active T4 hormone into active T3. Selenium from SelenoExcell also contributes to selenoproteins involved in antioxidant activity. The label shows potassium iodide contributing 3 mg of iodine and high-selenium yeast supplying 100 mcg of selenium. This pairing gives Seleno-Iodide a defined purpose: it supports both thyroid hormone construction and subsequent conversion rather than supplying iodine alone. Iodine’s concentration in thyroid and breast tissue and selenium’s role in oxidative balance broaden the formula’s tissue relevance, but its central benefit remains coordinated iodine and selenium nutrition for adults with an appropriate need.
Who should take Seleno-Iodide?
Adults seeking combined iodine and selenium support may consider Seleno-Iodide when those trace minerals fit their nutrition plan. The product may be relevant for people whose diets do not reliably supply iodine or selenium and who want both thyroid-hormone building material and selenium-dependent conversion support. Each capsule uses potassium iodide to provide 3 mg of iodine and SelenoExcell to provide 100 mcg of selenium, so users should account for other kelp, iodine, thyroid-support, or selenium products before adding it. People with thyroid concerns or those taking thyroid medication should obtain individualized guidance because the formula directly supplies nutrients used in thyroid physiology. Seleno-Iodide is presented for adults rather than children. Anyone who is pregnant or nursing should follow the manufacturer’s caution before use, and personal iodine sensitivity should be considered.
Are there any side effects of taking Seleno-Iodide?
Seleno-Iodide needs careful dose review because one capsule supplies 3 mg of iodine together with 100 mcg of selenium. The exact caution from its label follows: If you are pregnant or nursing, consult your health care professional before taking Seleno-Iodide. Potassium iodide is the iodine source, and SelenoExcell high-selenium yeast provides selenium. The inactive panel lists silicon dioxide followed by microcrystalline cellulose and magnesium stearate. Thyroid medicines, kelp, separate iodine, multivitamins, and selenium products can all change the combined exposure. Known iodine sensitivity or a medically managed thyroid plan calls for individualized direction before use. A new change noticed after dosing should prompt discontinuation and assessment. Essential trace-mineral status does not make every supplemental amount appropriate for every adult.
How does Seleno-Iodide support overall health?
Seleno-Iodide supports overall health through the coordinated roles of iodine and selenium in thyroid and antioxidant systems. Iodine forms part of T4 and T3 thyroid hormones, which influence metabolic signaling in tissues throughout the body. Selenium supports deiodinase enzymes that activate thyroid hormone by converting T4 to T3. SelenoExcell also supplies selenium for antioxidant selenoproteins, helping tissues manage normal oxidative activity. Iodine is concentrated in thyroid and breast tissue, giving adequate iodine status relevance beyond a single gland. The product links these functions with 3 mg of potassium-iodide-derived iodine and 100 mcg of high-selenium yeast. Its contribution is specific: providing both the structural mineral for thyroid hormones and the enzyme cofactor used in their conversion. Appropriate personal use matters because the same physiological specificity requires careful review of thyroid medicines and other iodine or selenium supplements.
These statements have not been evaluated by the FDA. This product is not intended to diagnose, treat, cure, or prevent any disease.
