Thyroid Support

The thyroid gland depends on iodine, selenium and zinc to produce and convert hormones that regulate metabolism, energy and body temperature. This collection covers targeted supplements for thyroid health, including standalone minerals, tyrosine formulas and herbal blends with ashwagandha and bladderwrack. If you are on thyroid medication, consult your GP before adding supplements as some nutrients can interact with treatment.

Read more

This collection is empty

Continue shopping

Key Nutrients for Thyroid Health

The thyroid gland requires specific nutrients to produce and convert thyroid hormones effectively. Iodine is the primary building block of thyroid hormones T3 and T4, and deficiency is the most common cause of thyroid dysfunction worldwide. New Zealand soils are iodine-deficient, making supplementation or regular consumption of iodine-rich foods such as seafood and iodised salt important for maintaining thyroid health. Selenium is equally critical, as it is required for the enzyme that converts inactive T4 into the active T3 form that the body can use.

Hashimoto's Thyroiditis and Nutritional Support

Hashimoto's thyroiditis is an autoimmune condition in which the immune system attacks the thyroid gland, gradually reducing its ability to produce hormones. It is the most common cause of hypothyroidism in New Zealand. Selenium supplementation has been shown in clinical trials to reduce thyroid peroxidase antibody levels in people with Hashimoto's, and is one of the most evidence-supported nutritional interventions for this condition. Vitamin D deficiency is also commonly associated with autoimmune thyroid disease, and correcting deficiency may help modulate immune activity.

Common Questions

Can I take thyroid supplements if I'm on thyroxine medication?

Some supplements can affect thyroid hormone levels or interfere with the absorption of thyroxine medication. Iodine in particular can affect thyroid function in both directions depending on the dose and the individual's thyroid status. Selenium is generally considered safe alongside thyroxine. Always discuss any supplements you are considering with your GP or endocrinologist before starting them if you are on thyroid medication.

What are the signs of an underactive thyroid?

Common symptoms of hypothyroidism include persistent fatigue, unexplained weight gain, feeling cold, dry skin and hair, hair loss, constipation, low mood and brain fog. These symptoms overlap with many other conditions, so a blood test measuring TSH (thyroid stimulating hormone) and free T4 is needed to confirm a diagnosis. If you suspect thyroid issues, see your GP for testing before self-treating with supplements.

Is kelp a good source of iodine for thyroid support?

Kelp and other seaweeds are rich in iodine, but the iodine content varies enormously between products and batches, making it difficult to control your intake precisely. Very high iodine intake can actually worsen thyroid function in some people, particularly those with autoimmune thyroid disease. A standardised iodine supplement provides more predictable dosing than kelp-based products.