Thyrocsin Thyroid Cofactors helps support balanced thyroid function and steady energy by delivering essential cofactors that support hormone production across the day. Iodine and selenium support normal thyroid function and hormone production, while L-tyrosine provides thyroid hormone building blocks. This blend uses chelated minerals to boost uptake, and ashwagandha from KSM 66 supports balanced cortisol levels and adrenal thyroid harmony. This focus on quality means allergen free ingredients and eight active cofactors support thyroid metabolism.

Available Sizes & Variants:

120 Veggie Caps — Daily thyroid support in veggie form.

Benefits & Features:

• Steady energy helps you stay focused.
• Iodine and selenium support normal thyroid function and hormone production.
• L-tyrosine serves as a precursor for thyroid hormone synthesis, while chelated minerals boost absorption for consistent daily support and sustained energy throughout the day.
• Ashwagandha extract helps balance cortisol, supporting adrenal thyroid harmony.
• Zinc and copper are chelated for improved uptake and support overall mineral balance.

Thorne's Thyrocsin brings eight active cofactors together with a focus on bioavailability. Iodine and selenium support normal thyroid function and hormone production, while L-tyrosine provides the building blocks for thyroid hormone synthesis. Chelated minerals improve uptake, and ashwagandha (KSM 66) supports balanced cortisol, helping the adrenal thyroid axis. This focus on quality means allergen free ingredients and eight active cofactors support thyroid metabolism. Many users also pair with magnesium glycinate or a vitamin d supplement, and berberine is a popular wellness companion.

Ashwagandha, Copper, Iodine, Selenium, Tyrosine, Vitamin B, Vitamin C, Vitamin E, Zinc

• GTIN: 693749784012
• Manufacturer: Thorne
• Categories: New ArrivalsPopular Supplement BrandsThorne SupplementsThyroid Supplements
• Best buy: 6 - 24 months+

United Kingdom Shipping:

Orders placed by 2pm (Monday to Friday) are dispatched the same day. Orders placed after 2pm will be dispatched the next working day.

Free shipping on orders over £50 to the UK.

Returns: Our products are meant to make you feel healthy and at your best. If you need to return your item, you can do so free of charge within 30 days in the same original and unopened packaging. Subject to T&C's.

Take two capsules twice a day or as directed by your healthcare provider. Cats • 500 mg • 1
Toy Breed Dogs (up to 14 lbs.) • 500 mg • 1
Small Breed Dogs (15-29 lbs.) • 750 mg • 1½
Medium Breed Dog (30-49 lbs.) • 1 g • 2
Large Breed Dog (50-79 lbs.) • 1.5 g • 3
Giant Breed Dog (80+ lbs.) • 2 g • 4

Please consult the product packaging for accurate instructions on how to use the product.

The Active Ingredient Is: Iodine (Potassium Iodide)

Iodine is an essential trace element that helps make thyroid hormones which regulate metabolic energy, growth, and development throughout life.

This form is potassium iodide, an inorganic iodine source often used in supplements to help maintain normal thyroid hormone production and sustain daily energy expenditure.

What Does Iodine Do?

Iodine participates in thyroid hormone production and supports normal thyroid function as recognised by EFSA. It contributes to normal energy metabolism through regulation of thyroid hormones.

This nutritional role is part of how the body uses iodine to support metabolic processes that are essential for daily life.

This supplement isn't meant to diagnose, treat, cure, or prevent any disease.

Thorne Research is Welzo Selected for its solid commitment to high-quality, science‑led supplementation, underscored by chelated minerals (TRAACS) for zinc and copper and the inclusion of the clinically studied KSM‑66® ashwagha extract. This brand really stands out thanks to its established reputation in the industry and its focus on purity and potency, which lines up with our standards for robust formulations.

Our evaluation process involved a thorough assessment by our expert team of doctors, nurses, and nutritionists, who prioritise brands with transparent ingredient sourcing, allergen‑free manufacturing, and clear manufacturing practices. Thorne’s steadfast commitment to allergen‑free products (gluten, dairy, soy, etc.) and the avoidance of artificial additives supports our quality expectations and is documented through our ingredient quality and purity standards.

This product is ideally suited for a comprehensive thyroid cofactors formula, blending iodine and selenium with amino acid precursors and supportive botanicals, which mirrors Thorne’s emphasis on harmony between nutrient cofactors and thyroid health. This brand’s approach translates to reliable sourcing, consistent potency, and safety for our customers.