Iodine and Selenium
Key minerals for daily thyroid hormone conversion
My ThyroGem
£57.90
-60%
£22.90
-60%
My ThyroGem
Support the thyroid rhythm that keeps your energy, weight, and clarity on track.
4.9 / 5.0
✓
3637 verified reviews
- ✓ Delivers iodine and selenium to support T3/T4 thyroid hormone production daily.
- ✓ L-tyrosine 200 mg: the amino acid backbone the thyroid uses to build hormones.
- ✓ Schisandra chinensis extract supports stress resilience and helps ease fatigue.
- ✓ One capsule per day after a meal — no complex routine required.
- ✓ Made in the EU, HPMC capsule shell, no stimulants or synthetic hormones.
Packaging:
30 capsules (21 g)
30-day supply
Free Shipping on purchases over £100.00
60-Day Peace Of Mind Promise
Estimated delivery time: 3 to 5 business days
Hurry! Only 10 items left in stock
L-Tyrosine 200 mg
Amino acid foundation for T3 and T4 synthesis
Made in the EU
Produced to strict European quality standards.
Money-back warranty
Covered by our satisfaction guarantee.
60-Day Peace Of Mind Promise
We're proud to offer a 60-day money-back guarantee on every Golden Tree product sold. If you don't notice any results, simply contact our Customer Support team for an 100%, no-questions-asked, money-back guarantee.
Why it helps
What steadier thyroid support can change in your day
When the thyroid falls behind, energy, weight, mood, and clarity follow. My ThyroGem delivers iodine, selenium, zinc, and L-tyrosine — the specific inputs your thyroid relies on to produce and convert hormones — alongside Schisandra extract to help manage the stress load that compounds the slowdown.
of users see noticeable improvements in energy levels within the first week
0%of users report clearer thinking and reduced brain fog
0%of users enjoy more stable moods and reduced stress
0%of users experience enhanced metabolic rate and weight management
0%
All in one daily capsule
One capsule targets the thyroid inputs your body stops prioritising after 35.
My ThyroGem works by restoring the precise mineral and amino acid environment the thyroid gland needs to produce T4 and convert it to active T3. Iodine, selenium, zinc, and L-tyrosine form the core stack. Schisandra and guggul add the adaptogenic and conversion-support layer. One capsule, one daily habit.
✓
Supports T3/T4 hormone production and conversion
✓
Helps reduce fatigue, brain fog, and low energy
✓
Promotes healthy hair, skin, and nail condition
✓
Schisandra extract for stress resilience and mood balance
✓
Guaranteed to work, or it's yours FREE.
A day in the life
How one capsule reshapes your day, moment by moment.
Thyroid hormones influence energy, temperature, digestion, focus, and mood throughout the day. My ThyroGem works with your body's natural hormone rhythm so the right support is there when you need it most.
Standard routine
Golden Tree My ThyroGem
7:00
💊
Capsule taken
One capsule with breakfast. The day's support begins.
10:00
⚡
Energy steadies
Iodine and selenium support hormone conversion kicking in.
12:00
🧠
Clearer focus
L-tyrosine supports dopamine pathways and mental sharpness.
15:00
🌿
Stress buffer
Schisandra helps quiet the cortisol spike that dims the afternoon.
18:00
😌
Calmer close
Balanced mood and less muscle tension heading into the evening.
Real customer journeys
Before and after adding My ThyroGem
Sandra (44)
Plymouth
Verified customer
I finally stopped gaining weight for no reason, my metabolism feels alive again.
Isabella (51)
Glasgow
Verified customer
My skin feels so much softer and less dry. Genuinely surprised how fast it worked.
Charlotte (39)
Birmingham
Verified customer
The mood change was the biggest surprise. I feel much more balanced day to day.
Hero ingredient
Iodine and Selenium: The Thyroid Conversion Duo
Iodine (150 µg) and selenium (55 µg) are the two minerals the thyroid cannot produce hormones without — working together to convert inactive T4 into the active T3 your cells actually use.
Iodine provides the molecular raw material for thyroid hormone synthesis, while selenium activates the deiodinase enzymes that convert inactive T4 into the usable T3 form. Without adequate levels of both, hormone production stalls upstream — and no amount of lifestyle change fully compensates for the gap.
100% Daily Iodine
150 µg potassium iodide meets the full recommended daily intake per capsule.
100% Daily Selenium
55 µg L-selenomethionine: the organic, well-absorbed selenium form.
T4 to T3 Conversion
Selenium activates deiodinase enzymes critical for converting inactive to active hormone.
Stacks With Tyrosine
L-tyrosine works alongside iodine as the amino acid backbone of thyroid hormones.
The Mechanism
The Thyroid Reactivation Cycle
1
Supply
Iodine and L-tyrosine deliver the raw molecular inputs the thyroid gland needs to build T4 hormones.
2
Convert
Selenium and zinc activate the deiodinase enzymes that convert inactive T4 into the active T3 form your cells can use.
3
Regulate
Schisandra and guggul help modulate the stress and metabolic signals that suppress thyroid output and slow conversion.
4
Absorb
Piperine ensures the full stack reaches the bloodstream, maximising the effect of every ingredient in each capsule.
The result: steadier daily energy, sharper focus, calmer mood, and the start of a shift back into your body's natural hormonal rhythm — without synthetic hormones or complicated schedules.
The Science
The Disrupted Thyroid Conversion Cycle
After 35, four compounding factors quietly erode thyroid function — even when tests come back borderline. My ThyroGem targets each one with specific actives rather than a single-ingredient fix.
01
Mineral depletion gap
Modern diets routinely fall short of iodine and selenium — the two minerals the thyroid cannot synthesise hormones without. Low intake stalls production before conversion even begins.
02
Failed T4 to T3 conversion
Producing T4 is only half the process. Without adequate selenium-driven deiodinase activity, T4 remains inactive — leaving cells starved of the T3 they actually run on.
03
Cortisol disruption
Chronic stress elevates cortisol, which suppresses TSH signalling and impairs T4-to-T3 conversion. The thyroid produces less and converts less while the stress load remains unaddressed.
04
Poor nutrient absorption
Even well-formulated supplements can underdeliver if bioavailability is low. Without an absorption enhancer, mineral and amino acid uptake drops — leaving the formula partially effective at best.
Key ingredients
Key ingredients
My ThyroGem combines nine active ingredients targeting the full thyroid production-and-conversion chain: the amino acid precursor (L-tyrosine), the key minerals for hormone synthesis and conversion (iodine, selenium, zinc, manganese, magnesium), an adaptogenic extract for stress-modulated thyroid function (Schisandra), a resin extract to support T3 conversion (guggul), and piperine to maximise absorption across the stack.
150 µg
Iodine (as potassium iodide)
Thyroid hormone synthesis
Iodine is the essential mineral the thyroid gland uses to synthesise thyroxine (T4) and triiodothyronine (T3). Without adequate iodine, hormone production cannot proceed — making it the foundational input for thyroid function and metabolic rate regulation.
200 mg
L-Tyrosine
Hormone precursor
L-tyrosine is the amino acid the thyroid combines with iodine to manufacture T4 and T3. It also supports dopamine and noradrenaline pathways, contributing to focus and mood stability alongside its hormonal role.
55 µg
Selenium (as L-selenomethionine)
T4 to T3 conversion
Selenium activates the deiodinase enzymes that convert T4 into active T3. The L-selenomethionine form offers strong bioavailability, making this the preferred selenium source for thyroid-support formulations.
200 mg
Chinese Schisandra fruit extract (Schisandra chinensis)
Adaptogenic support
Standardised to 10% schisandrins, this adaptogenic extract helps the body manage stress responses that can suppress thyroid activity. It also supports energy, mental clarity, and liver function involved in hormone metabolism.
10 mg
Zinc (as zinc bisglycinate)
Conversion enzyme support
Zinc is required for TSH signalling and for the conversion enzymes involved in T3 production. The bisglycinate chelate form improves absorption compared to standard zinc salts.
56.25 mg
Magnesium (Simag™ 55, sea-water source)
Energy and muscle support
Magnesium supports cellular energy production and helps ease muscle cramps and fatigue — symptoms closely associated with suboptimal thyroid activity. Sourced from sea-water magnesium oxide.
75 mg
Guggul gum resin extract (Commiphora mukul)
Metabolic support
Standardised to 2.5% guggulsterones, this traditional resin extract has been studied for its role in supporting thyroid hormone conversion and metabolic rate.
2 mg
Manganese (as manganese bisglycinate)
Antioxidant support
Manganese supports antioxidant enzyme function and plays a role in mitochondrial energy production, helping reduce the oxidative stress that can impair thyroid tissue.
2 mg
Black pepper fruit extract (Piper nigrum)
Absorption enhancer
Standardised to 95% piperine, black pepper extract supports the bioavailability of the other active ingredients in the formula, helping ensure each ingredient is absorbed and utilised effectively.
Verified reviews
What customers say
Evelyn K. (44)
Verified customer
Energy finally holds past midday. Brain fog has cleared noticeably since week three.
Petra M. (51)
Verified customer
Hair feels stronger and my skin is less dry. Small change, real difference.
Martha V. (39)
Verified customer
The calm in the evenings surprised me most. Mood is so much more stable now.
Ivy B. (47)
Verified customer
Finally a thyroid supplement that does not make me feel wired. Steady and gentle.
Why My ThyroGem
What steadier thyroid support can change in your day
Standard thyroid supplement
My ThyroGem
Hero nutrient stack
Often iodine alone or iodine with kelp, incomplete T3/T4 support
Iodine, selenium, zinc, L-tyrosine, and guggul — the full conversion stack
Amino acid support
Rarely includes L-tyrosine, the precursor needed to build thyroid hormones
200 mg L-tyrosine per capsule, the direct hormonal building block
Adaptogenic layer
No stress-modulating ingredient, ignores cortisol's role in thyroid slowdown
Schisandra chinensis 200 mg standardised to 10% schisandrins for resilience
Mineral form
Inorganic mineral salts with lower bioavailability
Bisglycinate-chelated zinc and manganese for better absorption
Absorption enhancer
No bioavailability support, actives may pass through without full uptake
Piperine 1.9 mg from black pepper extract to support nutrient absorption
Daily format
Multi-capsule doses, complicated schedules, easy to fall off routine
One HPMC capsule daily after a meal — simple and sustainable
The bottom line
Five reasons your thyroid deserves more than a single mineral
Thyroid function depends on a precise chain of minerals, amino acids, and conversion enzymes. My ThyroGem covers each link in that chain — from hormone synthesis through to cellular delivery — in one daily capsule designed to make consistency easy.
01
Iodine and selenium form the production core
Two minerals, meeting 100% of the recommended daily intake, for the hormones your thyroid cannot make without them.
0%
02
L-tyrosine supplies the amino acid backbone
The direct molecular precursor to T4 and T3, supporting synthesis where it starts.
200
mg L-tyrosine
03
Schisandra supports the stress-thyroid link
Adaptogenic schisandrins help moderate the cortisol signals that slow thyroid conversion.
0%
schisandrins
04
Bisglycinate minerals absorb more completely
Chelated zinc and manganese reach the bloodstream more reliably than standard mineral salts.
05
Piperine carries the whole stack further
Black pepper extract helps every active ingredient absorb and deliver its full effect.
9
active ingredients
60-Day Peace Of Mind Promise
We're proud to offer a 60-day money-back guarantee on every Golden Tree product sold. If you don't notice any results, simply contact our Customer Support team for an 100%, no-questions-asked, money-back guarantee.
Choose your supply
Pick the plan that gives the routine time to work
Thyroid support builds with consistency — the right supply length gives your body enough time to respond and helps you get more from every capsule.
-60%
My ThyroGem
Support the thyroid rhythm that keeps your energy, weight, and clarity on track.
4.9 / 5.0
✓
3637 verified reviews
- ✓ Delivers iodine and selenium to support T3/T4 thyroid hormone production daily.
- ✓ L-tyrosine 200 mg: the amino acid backbone the thyroid uses to build hormones.
- ✓ Schisandra chinensis extract supports stress resilience and helps ease fatigue.
- ✓ One capsule per day after a meal — no complex routine required.
- ✓ Made in the EU, HPMC capsule shell, no stimulants or synthetic hormones.
Packaging:
30 capsules (21 g)
30-day supply
Free Shipping on purchases over £100.00
60-Day Peace Of Mind Promise
Estimated delivery time: 3 to 5 business days
Hurry! Only 10 items left in stock
How to use
One capsule, one daily habit
Consistency is what drives thyroid support — take your capsule at the same time each day to build the routine that gives the formula the best chance to work.
-
1
With breakfast · First step
Take with food
Take one capsule with a full glass of water immediately after your morning meal.- After a meal
- One capsule
- Full glass of water
-
2
Morning · Second step
Same time daily
Take at the same time each day to maintain steady nutrient levels and support a consistent thyroid environment.- Same time daily
- Build the habit
- No skipping
-
3
Once daily · Third step
Do not exceed dose
One capsule per day is the recommended dose. Do not take more than the stated daily amount.- One per day
- Do not exceed
- Follow label
-
4
Ongoing · Final step
Store correctly
Keep the bottle sealed at temperatures up to 25 °C, away from light, moisture, and out of the reach of children.- Below 25°C
- Dark and dry
- Keep sealed
Questions
Frequently asked questions
Golden Tree My ThyroGem provides the specific minerals, amino acids, and plant extracts the thyroid gland needs to produce and convert hormones. Iodine and L-tyrosine support T4 synthesis; selenium and zinc support T4-to-T3 conversion; Schisandra helps moderate stress signals that can suppress thyroid activity. The result is a formula that addresses the whole thyroid production chain, not just one step.
The formula works in four stages: supplying iodine and L-tyrosine as the raw material for hormone production; activating conversion with selenium and zinc; regulating the stress and metabolic environment with Schisandra and guggul; and maximising absorption of all active ingredients with piperine. Together these steps support the thyroid's full hormone output and conversion process.
My ThyroGem is designed for adults over 35 who experience symptoms associated with suboptimal thyroid function — including persistent fatigue, unexplained weight changes, brain fog, brittle hair, dry skin, cold intolerance, slow digestion, or mood instability. It contains no synthetic hormones and is intended as a daily dietary supplement, not a medical treatment.
Take one capsule daily with a full glass of water after a meal, at the same time each day. Most users find that consistency over several weeks gives the formula the best opportunity to work. Thyroid-related symptoms are slow to appear and may be slow to shift, so daily routine compliance is important.
No. My ThyroGem contains no synthetic thyroid hormones (such as levothyroxine), no stimulants, and no proprietary hormone precursors. It supports the body's natural thyroid function through minerals, an amino acid, adaptogenic extracts, and a bioavailability enhancer. The capsule shell is HPMC, suitable for vegetarians.
Bisglycinate chelates bind the mineral to glycine amino acids, which protects them from competing minerals in the gut and improves absorption compared to standard inorganic salts like zinc oxide or manganese sulphate. The bisglycinate forms in My ThyroGem help ensure more of each dose reaches the bloodstream and supports thyroid enzyme activity.
If you are currently prescribed thyroid medication or being monitored for a thyroid condition, consult your healthcare professional before adding any dietary supplement to your routine. My ThyroGem is a food supplement, not a medical treatment, and the decision to combine it with prescription therapy should always be made with professional guidance.
Store My ThyroGem in its sealed bottle at temperatures up to 25 °C, in a dark and dry place, away from direct light and moisture. Keep it out of reach of children. Do not exceed the recommended daily dose. My ThyroGem is a dietary supplement and is not a substitute for a balanced diet or healthy lifestyle.
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