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Every ingredient. Every reason.

Every ingredient
earned its place.

Each one chosen for its form, its dose, and the research behind it. No proprietary blends. No fairy dust. No filler.

Bioactive forms. Premium sources. Real doses.

Most thyroid-targeted supplements use the cheapest form of every nutrient. We co-formulated ThyroBase with dietitians, naturopaths, oncology pharmacists, and a FSANZ specialist around a single question: would I take this every day, for life. Every form below is the answer.

22Researched ingredients
100%Bioactive forms
0Iodine, kelp, fillers
AM · Golden Morning

The morning cofactors.

The cofactors your body needs to convert and use thyroid hormone effectively across the day.

Pineapple · Cardamom
Selenium powder (selenomethionine)
AM Cofactor

Selenium

200 mcg · selenomethionine

Cofactor for T4-to-T3 conversion. Up to 30% of post-thyroidectomy people sit at the bottom of the normal range here.

Methylcobalamin B12 powder
AM Cofactor

Vitamin B12

1,000 mcg · methylcobalamin

Bioactive form, no conversion needed. 27% of hypothyroid people are deficient (Benites-Zapata, 2023).

Iron bisglycinate powder
AM Cofactor

Iron

Iron bisglycinate · chelated

Gentle on the gut, absorbed cleanly. Ferritin is one of the strongest correlates of hair shedding and energy.

Zinc bisglycinate powder
AM Cofactor

Zinc

15 mg · zinc bisglycinate

Required for thyroid hormone synthesis. Pairs with selenium in T4-to-T3 conversion.

Vitamin D3 cholecalciferol
AM Cofactor

Vitamin D3

Cholecalciferol · clinical dose

Twice as effective as D2 at raising serum levels. Linked to autoimmune thyroid in deficiency.

Acerola cherries — natural vitamin C source
AM Cofactor

Vitamin C

Acerola cherry extract

Whole-food source with bioflavonoid cofactors intact. Boosts iron absorption alongside the AM iron.

Pea, faba, brown rice and pumpkin seed proteins
AM Foundation

Plant Protein Matrix

24.9 g · four-source organic

Yellow pea, brown rice, faba bean, pumpkin seed. Soy-free, complete amino acid profile.

PM · Midnight Cocoa

The evening repair.

The nutrients your body needs to settle, repair, and recover overnight. No caffeine. No melatonin. No sedation.

Chocolate · Cinnamon
Magnesium citrate powder
PM Repair

Magnesium

300 mg · magnesium citrate

The most documented mineral for sleep onset and quality (Abbasi, 2012, RCT). Citrate form, well-absorbed.

Glycine amino acid powder
PM Repair

Glycine

1,500 mg · clinical dose

Lowers core body temperature, improves sleep quality at this dose (Yamadera, 2007, RCT). No grogginess.

Dried chamomile flowers
PM Repair

Chamomile Extract

Standardised extract

Apigenin binds GABA receptors with calming effect. Useful for the "wired but tired" pattern.

Passionflower
PM Repair

Passionflower Extract

Standardised extract

Used clinically for anxiety-driven sleep onset. Pairs with chamomile and glycine for parasympathetic shift.

Probiotic blend, five live strains
PM Repair

Probiotics

5 strains · live CFU

~20% of T4-to-T3 conversion happens in the gut microbiome (Knezevic, 2020). Multi-genus blend.

Prebiotic soluble fibre blend
PM Repair

Prebiotic Fibre

Soluble fibre blend

Feeds the live strains overnight. Supports gut barrier function — matters for hormone conversion.

The foundation

Real flavor, not chemistry.

The flavoring, sweetening, and finishing ingredients are held to the same standard as the actives. Whole-food sources. No artificial sweeteners. No flavor chemicals.

Cacao
PM Flavor base

Cacao

Polyphenol-rich

The heart of PM cocoa flavor. Naturally rich in magnesium and antioxidant polyphenols.

Vanilla bean
PM Flavour

Vanilla Bean

Real Madagascan

Real Madagascan vanilla bean, not synthetic flavoring extract. Adds depth and warmth to PM.

Cinnamon
PM Warm spice

Cinnamon

Whole-spice

Adds the warm-spice signature to PM. Studied for glucose response and insulin sensitivity.

Nutmeg
PM Warmth

Nutmeg

Whole-spice

A pinch in PM for warmth, depth, and a subtle traditional calming note.

Lucuma
Natural sweetness

Lucuma

Low-glycemic Peruvian fruit

Low-glycemic Peruvian fruit. Caramel-toffee sweetness without the spike.

Monk fruit
Natural sweetness

Monk Fruit

Zero-calorie fruit extract

Zero-calorie, fruit-derived sweetness. No glycemic impact, no artificial chemistry.

Himalayan salt
Trace minerals

Himalayan Salt

Pink mineral salt

Trace minerals and electrolyte balance. A pinch, not a season.

Greens blend
Whole-food micronutrients

Greens Blend

Dark leafy concentrate

Dark leafy concentrate. Naturally rich in chlorophyll and trace micronutrients.

Spirulina
Algal nutrition

Spirulina

Blue-green algae

Algal protein and pigments. Iron-rich. Quiet plant nutrition in the AM blend.

What's missing matters

What we deliberately left out.

What's not in the pouch matters as much as what is. Each exclusion has a reason — most tied to thyroid medication absorption or autoimmune triggers.

ExcludedWhy
IodineUnnecessary if you're on thyroid hormone medication. Can interfere with treatment and is documented to trigger or worsen autoimmune thyroid conditions in susceptible people.
KelpHigh iodine content by another name. Contraindicated for most people on thyroid medication.
Soy isoflavonesDocumented to impair thyroid medication absorption and may interfere with hormone signalling.
GoitrogensCounterproductive for thyroid function. Not in either pouch.
Glandular extractsUnregulated hormone content from animal sources. Quality control is unreliable.
Caffeine and stimulantsCaffeine reduces thyroid medication absorption by 25 to 50% if taken too close to your dose. Guarana and synthetic stimulants amplify the wired-but-tired pattern.
MelatoninWe support the underlying physiology of sleep (glycine, magnesium, chamomile, passionflower) rather than override it with a hormone signal.
Synthetic fillers and gumsXanthan, guar, carrageenan. None of them earn their place in a daily ritual.
Artificial sweetenersSucralose, aspartame, acesulfame-K. We use the natural sweetness of cocoa, vanilla, lucuma, and monk fruit.
Certifications and quality

Co-formulated with naturopaths, dietitians, food scientists, oncology pharmacists, and FSANZ-compliant formulators.

Every ingredient and dose was reviewed by people who actually understood the brief. Manufactured in Australia to FSANZ standards.

FSANZ Approved Australian Made Vegan Gluten Free Lactose Free Soy Free Stimulant Free Hormone Neutral

ThyroBase is a nutritional supplement and is not intended to diagnose, treat, cure, or prevent any disease. It is not a substitute for prescribed thyroid hormone replacement therapy. Always consult your healthcare professional before starting any supplement, especially if you are taking prescription medication.

Every ingredient sits on top of peer-reviewed research.

See the full reference list on our science page, or start your monthly ritual with the only AM and PM system formulated specifically for life with a thyroid condition.

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$369/month on subscription · $399 one-time · 60-Day Empty Pouch Promise · Free shipping Australia-wide

ThyroBase is a nutritional supplement and is not intended to diagnose, treat, cure, or prevent any disease. Always consult your healthcare professional before starting any supplement, especially if you are taking prescription medication or are managing a health condition. ThyroBase is not a substitute for prescribed thyroid hormone replacement therapy.

© 2026 ThyroBase · All rights reserved Made in Australia · FSANZ Compliant