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Practitioner only
Thyroid nutrient complex
Nutritional support for healthy thyroid function and metabolism
A practitioner-formulated tablet providing iodine, selenium, zinc, vitamin E and ashwagandha, the key nutrients required for thyroid hormone synthesis, T4 to T3 conversion and thyroid gland protection.
TGA-listed AUST L
Practitioner-grade formula
Clinician-reviewed before dispatch
Ships in 2 business days
What's in it
Each ingredient is in its most bioavailable form, at a clinically meaningful dose. No fillers, no token amounts, no marketing-led blends.
Potassium iodide
Iodine (as potassium iodide)
Essential component of thyroid hormones T4 (thyroxine — 4 iodine atoms) and T3 (triiodothyronine — 3 iodine atoms). Iodine deficiency is the most common cause of hypothyroidism globally.
150mcg
Organic selenomethionine
Selenium (as selenomethionine)
Required for iodothyronine deiodinase enzymes that convert T4 to active T3. Also provides antioxidant protection to the thyroid via glutathione peroxidase. Each tablet provides 150mcg — the loading dose included in this formula.
150mcg
Zinc citrate
Zinc (as zinc citrate)
Required for thyroid hormone synthesis and for the action of thyroid hormone nuclear receptors. Zinc deficiency impairs both T4 production and T3 receptor binding.
15mg
d-alpha tocopherol
Vitamin E (natural d-alpha tocopheryl)
Fat-soluble antioxidant protecting thyroid cell membranes from the oxidative stress of thyroid hormone synthesis.
10mg
Standardised root extract
Withania somnifera (Ashwagandha) extract
Adaptogenic herb that supports the HPA axis stress response. Cortisol suppresses TSH and inhibits T4 to T3 conversion — ashwagandha's cortisol-moderating action supports normal thyroid function in people under chronic stress.
150mg extract (equiv. 750mg dry root)
Always read the label and follow directions for use. Vitamins and minerals can only be of assistance if dietary intake is inadequate. If symptoms persist, consult a healthcare professional.
How to take it
Simple to take, with a few timing notes that make a real difference to absorption.
Loading dose: 2 tablets twice daily with food. Maintenance dose: 1 tablet twice daily with food. Loading dose is typically used for the first 4-8 weeks then reducing to maintenance.
If you have a diagnosed thyroid condition or are on thyroid medication, seek medical advice before use, iodine supplementation can affect thyroid hormone levels. Withania somnifera (ashwagandha) may interact with thyroid medications, immunosuppressants and sedatives. Dietary supplements should not replace a balanced diet. Not recommended during pregnancy without medical advice. Vegan friendly. Free from dairy, lactose, eggs, gluten, wheat, nuts, yeast and salt.
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Back to Thyroid →Frequently asked.
Common questions about how OptiLabs works: testing, supplements, clinician review, returns and timing.
Are the supplements safe?
All carry an AUST L designation from the TGA. Every order is reviewed by a clinician before dispatch.
Do I need a referral?
No. All tests are available to order directly. Our lab partner is NATA and RCPA accredited, operating as a direct-access pathology service.
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