Thyroid Plus™ — Thyroid Glandular 130mg with L-Tyrosine, L-Aspartic Acid, Thyroid-Specific B Vitamins & Minerals for Comprehensive Thyroid Support
Thyroid Plus™ is Priority One's comprehensive thyroid support formula — combining a meaningful dose of Thyroid glandular concentrate (130mg) with L-Tyrosine (the primary amino acid precursor to thyroid hormones), L-Aspartic Acid, a high-potency B vitamin complex, and the minerals most critical for normal thyroid hormone synthesis: Zinc, Magnesium, Manganese, and Potassium. Where the pure thyroid glandular products (32.5mg, 65mg, 130mg, 300mg) provide glandular tissue alone, Thyroid Plus™ provides the full nutritional ecosystem that surrounds and supports normal thyroid function.*
Please note: Thyroid Plus™ contains Thyroid glandular and is encapsulated in gelatin — not suitable for vegetarians or vegans.
Serving size is 2 capsules, 60 servings per container (120 capsules).
What's inside and why it matters
Thiamine HCl (Vitamin B1, 30mg, 2,500% DV) — A high-potency B1 dose supporting normal energy metabolism via pyruvate dehydrogenase — the entry point to the Krebs cycle. B1 is particularly relevant to thyroid support because thyroid hormones regulate cellular energy metabolism, and B1 is a primary cofactor for the energy-generating pathways that thyroid hormones control.*
Riboflavin (Vitamin B2, 50mg, 3,846% DV) — A critical FAD/FMN coenzyme cofactor for cellular energy metabolism and thyroid peroxidase (TPO) — the enzyme responsible for the oxidation and organification of iodide in thyroid hormone synthesis. Adequate riboflavin is essential for normal TPO function and normal thyroid hormone production.*
Niacin as Niacin/Niacinamide 50/50 (52mg NE, 325% DV) — A blend of free niacin and non-flushing niacinamide supporting normal NAD+ synthesis — essential for the energy metabolism that thyroid hormones regulate — and normal thyroid gland cellular repair.*
Magnesium as Magnesium Aspartate Oxide (40mg, 10% DV) — A multi-form magnesium blend supporting normal thyroid hormone deiodination — the conversion of T4 to the active T3 form — via its role as a cofactor for deiodinase enzymes, and supporting normal energy metabolism in thyroid-responsive tissues.*
Zinc as Zinc Picolinate Oxide (10mg, 91% DV) — Zinc picolinate in a highly bioavailable form at 91% DV. Zinc is one of the most important trace minerals for normal thyroid hormone synthesis and metabolism. It is required for normal thyroid hormone receptor function (thyroid hormone receptors are zinc finger transcription factors), normal thyroid-stimulating hormone (TSH) production, and normal T4 to T3 conversion via 5'-deiodinase activity.*
Manganese as Manganese Citrate Carbonate (2mg, 87% DV) — Supporting normal antioxidant enzyme function (Mn-SOD) in thyroid tissue — the thyroid generates hydrogen peroxide as part of normal thyroid hormone synthesis, making antioxidant protection of thyroid tissue particularly important.*
Potassium as Potassium Chloride Aspartate (40mg, <1% DV) — Supporting normal electrolyte balance and normal cellular membrane potential in thyroid-responsive tissues.*
Thyroid Glandular Concentrate (130mg per serving) — 130mg of desiccated thyroid glandular concentrate providing tissue-specific factors from thyroid tissue — thyroid peptides, thyroglobulin, thyroid-specific enzymes, and regulatory proteins involved in normal thyroid hormone synthesis and cellular thyroid function. In the context of Thyroid Plus™, the 130mg glandular dose is combined with the nutritional cofactors required to support its activity — creating a more functionally complete thyroid support formula than the glandular alone.*
L-Aspartic Acid (298mg per serving) — The highest-dosed active ingredient in this formula. L-Aspartic Acid is an amino acid that supports normal mitochondrial energy metabolism (via the malate-aspartate shuttle), normal pituitary function, and normal TSH (thyroid-stimulating hormone) production. Aspartic acid is concentrated in pituitary tissue and supports normal pituitary-thyroid axis regulation — the upstream control system that drives normal thyroid hormone production.*
L-Tyrosine (250mg per serving) — The second highest-dosed active ingredient and arguably the most targeted thyroid-specific nutrient in this formula. L-Tyrosine is the essential amino acid building block for thyroid hormone synthesis. Both T4 (thyroxine — four iodine atoms attached to two tyrosine residues) and T3 (triiodothyronine — three iodine atoms attached to two tyrosine residues) are synthesised by the thyroid gland through iodination of tyrosine residues within thyroglobulin. Without adequate L-Tyrosine, thyroid hormone synthesis is impaired regardless of iodine availability.*
L-Tyrosine also supports normal catecholamine synthesis (dopamine, norepinephrine, epinephrine) — relevant because thyroid hormones regulate catecholamine sensitivity throughout the body.*
Thyroid Plus™ vs pure thyroid glandular — when to use each
Priority One's pure thyroid glandular products (32.5mg, 65mg, 130mg, 300mg) provide isolated thyroid tissue concentrate — appropriate for practitioners who want precise glandular dosing without additional cofactors. Thyroid Plus™ combines 130mg of thyroid glandular with the full nutritional support system for normal thyroid function: the amino acid precursor to thyroid hormones (L-Tyrosine), the pituitary support amino acid (L-Aspartic Acid), the enzymatic cofactor minerals (Zinc, Magnesium, Manganese), and the B vitamin energy metabolism cofactors. It is the more comprehensive daily thyroid support formula.*
At a glance — what this formula supports
- Normal thyroid hormone synthesis via L-Tyrosine (thyroid hormone amino acid precursor)*
- Normal thyroid gland tissue support via Thyroid glandular 130mg*
- Normal pituitary-thyroid axis function and TSH regulation via L-Aspartic Acid*
- Normal T4 to T3 conversion via Zinc (deiodinase cofactor) & Magnesium*
- Normal thyroid peroxidase activity via Riboflavin B2 (TPO cofactor)*
- Normal energy metabolism in thyroid-responsive tissues via high-potency B vitamin complex*
Quality you can verify
Every batch of Thyroid Plus™ is manufactured in a GMP-certified facility and third-party tested for purity and potency. Thyroid glandular sourced from New Zealand grass-fed cattle. Gelatin capsule — not suitable for vegetarians or vegans.
120 capsules per bottle (60 servings).
*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 Plus™ contains Thyroid glandular — use under the supervision of a qualified healthcare provider with appropriate thyroid function monitoring. Do not use as a substitute for prescribed thyroid hormone replacement therapy without healthcare provider guidance. Not suitable for vegetarians or vegans.
