Thyroid 300mg — High-Potency New Zealand Grass-Fed Beef Thyroid Glandular Concentrate for Thyroid & Metabolic Support
Thyroid 300mg is Priority One's highest-potency single-ingredient thyroid glandular formula — providing 300mg of pure, desiccated thyroid glandular concentrate per capsule from New Zealand grass-fed, grass-finished cattle. Available in 60 and 120 capsule sizes for flexible supply options.*
Please note: Thyroid 300mg contains bovine thyroid tissue and is encapsulated in gelatin — not suitable for vegetarians or vegans.
Serving size is 1 capsule. Available in 60 and 120 capsule sizes — select your preferred size above.
New Zealand sourcing — why it matters
All Priority One glandular products use glandular tissue sourced from New Zealand grass-fed, grass-finished cattle — the highest available quality and safety standard in the global glandular supplement market.*
New Zealand cattle are raised on pasture year-round, free from growth hormones, BSE, and the intensive farming conditions common in other producing regions. New Zealand's strict agricultural regulations, pristine environment, and stringent BSE-free status make its bovine glandular material the preferred source for quality-conscious glandular medicine practitioners worldwide. The combination of grass-fed, hormone-free, New Zealand sourcing ensures that the thyroid glandular concentrate in this formula is as clean, potent, and tissue-representative as commercially available.*
What's inside and why it matters
Thyroid Glandular Concentrate (300mg per capsule)
Desiccated (dried) thyroid glandular concentrate is the most direct form of thyroid tissue support available as a dietary supplement. Thyroid glandular provides tissue-specific factors from thyroid tissue — including naturally occurring thyroid peptides, thyroid proteins (including thyroglobulin), co-factors, and enzymatic components involved in normal thyroid hormone synthesis and cellular thyroid function.*
The thyroid gland is responsible for the synthesis and secretion of thyroxine (T4) and triiodothyronine (T3) — the primary hormones regulating metabolic rate, normal energy production, body temperature, heart rate, and virtually every organ system's metabolic activity. In glandular medicine, the principle of "like supports like" underpins the use of thyroid glandular — providing the same tissue type as the organ being supported.*
What thyroid glandular contains — Desiccated thyroid concentrate from whole thyroid tissue naturally contains thyroglobulin (the glycoprotein precursor to T4 and T3), calcitonin (a thyroid hormone involved in calcium regulation), thyroid-specific enzymes (including thyroid peroxidase), and the full complement of thyroid tissue-specific peptides and cofactors. While supplement-grade thyroid glandular is labelled as containing thyroid tissue, its hormonal content is typically low and variable — it is the tissue-specific factors, not pharmaceutical hormone replacement, that characterise its role as a dietary supplement.*
Why 300mg? At 300mg per capsule, Thyroid 300mg provides more than twice the dose of the 130mg option and more than four times the 65mg option. This is Priority One's highest-potency thyroid glandular product — appropriate for practitioners and individuals who require the highest available single-capsule glandular dose for their clinical protocols. The 300mg dose is used in functional and naturopathic medicine protocols where high-dose glandular support is indicated.*
Thyroid 300mg vs the 32.5mg / 65mg / 130mg range
Priority One offers thyroid glandular across four potency levels: 32.5mg, 65mg, 130mg, and 300mg. The 300mg product is the highest-potency option — designed for individuals whose healthcare provider has determined that a high-dose glandular protocol is appropriate. The lower potency options (32.5mg, 65mg, 130mg) allow for precise dose titration; the 300mg option serves those who have completed titration and established their maintenance or therapeutic dose.*
At a glance — what this formula supports
- Normal thyroid function and healthy thyroid tissue support via 300mg glandular concentrate*
- Normal energy metabolism and healthy metabolic rate support*
- Normal body temperature regulation and healthy thermogenesis*
- Thyroid tissue-specific factors from premium New Zealand grass-fed beef sourcing*
- High-potency glandular dosing for intensive healthcare provider protocols*
Quality you can verify
Every batch of Thyroid 300mg is manufactured in a GMP-certified facility and third-party tested for purity and potency. Sourced exclusively from New Zealand grass-fed, grass-finished, hormone-free cattle. Gelatin capsule — not suitable for vegetarians or vegans.
Available in 60 and 120 capsule sizes.
*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.
Warnings
WARNING: If you are pregnant or breastfeeding, consult your physician before using this product. Thyroid glandular should be used under the supervision of a qualified healthcare provider — thyroid function should be monitored with appropriate testing. Do not use as a substitute for prescribed thyroid hormone replacement therapy without healthcare provider guidance. Not suitable for vegetarians or vegans. Keep out of reach of children.
