Thyroid

The thyroid gland requires specific micronutrients to produce and regulate its hormones effectively. Iodine is the essential mineral that combines with tyrosine to form both thyroxine (T4) and triiodothyronine (T3). Selenium is equally critical as the enzyme that converts inactive T4 to active T3 is selenium-dependent. Research in the journal Thyroid found that selenium supplementation significantly reduced thyroid peroxidase antibodies in patients with autoimmune thyroiditis, suggesting a protective role beyond basic hormone synthesis. L-tyrosine provides the amino acid backbone for both T3 and T4, while vitamin B12 supports the downstream energy processes that thyroid hormones control. All four are included in our Thyroid Support formula.

Common signs of suboptimal thyroid function include persistent fatigue despite adequate sleep, unexplained weight changes, difficulty concentrating, low mood, dry skin, hair thinning, and feeling consistently cold. Many of these symptoms overlap with iodine or selenium deficiency, the most common nutritional contributors to impaired thyroid hormone synthesis. The American Thyroid Association estimates that approximately 20 million Americans have some form of thyroid dysfunction, with many undiagnosed. If you experience several of these symptoms consistently, a GP visit with a thyroid panel blood test is the most important first step before starting supplementation. This is for informational purposes only and not a substitute for medical diagnosis.

Iodine supplementation at appropriate doses is safe and necessary for thyroid function in people with dietary deficiency. The recommended daily intake for adults is 150 micrograms, rising to 220 to 290 micrograms for pregnant and breastfeeding women. Most people in the US receive iodine through iodised salt and dairy products, but those following vegan diets or avoiding salt may be at risk of deficiency. It is important to note that both too little and too much iodine can impair thyroid function. High-dose iodine supplementation is not appropriate for people with autoimmune thyroid conditions without medical supervision. Our formula delivers iodine within the physiological range appropriate for general thyroid nutritional support.

No. Thyroid supplements containing iodine, selenium, L-tyrosine, and B12 support the nutritional environment for healthy thyroid function, but they cannot replace synthetic thyroid hormone medications like levothyroxine in people with diagnosed hypothyroidism. These supplements work best as a preventive and supportive measure, particularly for people with subclinical thyroid dysfunction, borderline lab values, or nutritional deficiencies that may be contributing to mild symptoms. For people already taking thyroid medication, some of these ingredients, particularly iodine, can interact with medication efficacy or test results. This content does not constitute medical advice. Always consult an endocrinologist before changing your thyroid supplement routine if you have a diagnosed thyroid condition.