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NATURAL THYROID SUPPORT

T4 to T3,

without the stall.

A glandular and cofactor formula built around forskolin, zinc citrate, selenium, iodine, and bovine thyroid, adrenal, and pituitary glandulars — the inputs the HPT axis actually uses.

Shop T3/T4 Support View Formula →

Purchases are completed at Neurobiologix, the seller. Gene Direct Nutrition may earn a commission.

PROFESSIONAL GRADE · 60 CAPSULES · FORSKOLIN · ZINC · SELENIUM · THYROID GLANDULARS

T3/T4 Support bottle
CONVERSION
T4→T3 peripheral activation

Where the real work happens.

Thyroid function lives or dies at T4-to-T3 conversion. Zinc citrate and L-selenomethionine are the two cofactors most tied to that enzymatic step — the bottleneck for many slow thyroid profiles.

GLANDULARS
HPT + HPA axis support

Tissue-specific inputs.

Bovine thyroid, adrenal, pituitary, spleen, and thymus glandulars provide the tissue-specific peptides and cofactors that support endocrine resilience along the HPT and HPA axes.

cAMP
FSK forskolin signaling

Upstream signaling support.

Forskolin from Coleus forskohlii modulates cyclic AMP signaling — the pathway linked with endogenous thyroid hormone synthesis. It targets the step before conversion, not just the conversion itself.

MAY BENEFIT

Thyroid is a
chemistry problem.

01
Hormone synthesis
Iodine, L-tyrosine, and forskolin support the building blocks and signaling for thyroid hormone production.
02
T4 to T3 conversion
Zinc and selenium are the core enzymatic cofactors for peripheral hormone activation.
03
Metabolic rate
Supporting the HPT axis supports the cellular metabolism that downstream energy depends on.
04
Energy production
Thyroid output governs ATP demand across tissues; better signaling means steadier output.
05
Adrenal balance
Adrenal glandulars and HPA-axis support stabilize the system thyroid function runs in.
06
Hormone balance
Thyroid signaling interacts with sex hormones, cortisol, and metabolic tone across the endocrine system.

Formula

Twelve ingredients. A full HPT-axis formula.

KEY INGREDIENTS

Iodine
Zinc
As Zinc Citrate
Selenium
As L-Selenomethionine
Dulse Leaf
Forskohlii
Thyroid Gland Powder
Bovine
Adrenal Gland
Bovine
L-Tyrosine
Anterior Pituitary Gland
Bovine
Bladderwrack
Spleen
Bovine
Thymus Gland
Bovine

OTHER INGREDIENTS

Methylcellulose Capsule

DIRECTIONS

Adults: Take one capsule daily with water (before or 30 minutes after a meal) or as directed by a healthcare practitioner

MAY BENEFIT:
Hormone Balance
Women's Health
Men's Health
Energy

Questions

Frequently asked.

How is T3/T4 Support different from an iodine or kelp supplement?
Iodine alone only addresses substrate. This formula supplies substrate (iodine, L-tyrosine) plus the enzymatic cofactors for conversion (zinc, selenium), cAMP signaling (forskolin), and glandular support from bovine thyroid, adrenal, and pituitary tissue. It addresses synthesis, conversion, and axis resilience.
Who is this formula designed for?
Adults with sluggish metabolism, low energy, cold intolerance, or a practitioner-identified need for thyroid and adrenal support. It is most useful when T4 is present but T3 conversion is the bottleneck, and for patients with subclinical thyroid signals.
Can I take it alongside levothyroxine or other thyroid medications?
Do not combine with prescription thyroid medications without medical oversight. Some ingredients can shift how much hormone the body generates endogenously, which matters when exogenous dose is being titrated. Coordinate with your prescribing clinician.
When should I take it?
One capsule daily with water, taken either before a meal or at least 30 minutes after. Morning dosing is typical so the formula supports the natural AM rise in thyroid and adrenal activity.
Does it contain bovine tissue?
Yes. The formula includes bovine thyroid, adrenal, anterior pituitary, spleen, and thymus gland powders — the glandular inputs chosen for tissue-specific peptides and cofactors.
Is it safe during pregnancy or while breastfeeding?
Consult your healthcare practitioner before use if you are pregnant, lactating, or taking medications — particularly thyroid, adrenal, or pituitary prescriptions. Keep out of reach of children.

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