---
title: "Thyroid Support Supplement — £105K/yr Amazon UK Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/uk/health-personal-care/thyroid-support-supplement"
last_updated: "2026-07-31T12:19:48.279Z"
locale: en
meta:
description: "Niche score 57/100 · £105K/yr market. A failed launch gate (market size, growth, or returns) keeps it on the watch list. Data updated Jul 2026."
"og:description": "Niche score 57/100 · £105K/yr market. A failed launch gate (market size, growth, or returns) keeps it on the watch list. Data updated Jul 2026."
"og:title": "Thyroid Support Supplement — £105K/yr Amazon UK Niche (2026) - Flapen"
---
# **thyroid support supplement**
**Worth a look**
Shows low returns (0.1%), but a failed launch gate (market size, growth, or returns) keeps it on the watch list.
Market size 26Growth 21Conversion 65Competition 49Returns 100Price range 73Avg price 78Brand share 76Review moat 52Quality gap 82
**Returns**
**Incredible****0.1%**
return rate — above 5% kills the launch gate
**Quality gap**
**Great****4.2★**
avg incumbent rating — lower means beatable quality
**Avg price**
**Great****£16.21**
avg listing price — sweet spot $15–$100
**Brand share**
**Great****59%**
top-5 brand share — no brand owns this niche
**Price range**
**Good****£9.67–£29.17**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Conversion**
**Good****5.8%**
search→purchase rate — share of searches ending in a sale
**Review moat**
**Good****1,403.33**
avg incumbent reviews — the moat a new listing must climb
**Competition**
**Okay****56%**
top-5 click share — leaders hold, buyers still browse
**Market size**
**Okay****£105K**
£105K/yr · 112K searches
**Growth**
**Bad****-8.8%**
90-day search growth — must beat 0% to launch
**Signals**[** Low Review Barrier**](https://flapen.com/research/niches?market=uk&signal=low_review_barrier "Top brand's reviews < 500")
According to Flapen's Amazon United Kingdom niche tracking, thyroid support supplement is a £105K/yr Amazon United Kingdom market (112K searches/yr). The top 5 brands hold 59% of demand. Demand peaks in Feb. Verdict: Worth a look — 57/100.
Data updated Jul 25, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **thyroid support supplement market data**
- **Units sold / yr**
- **5K–6K**
- avg 100–250/product
- **Revenue / yr**
- **£81K–£97K**
- units × avg price
- **Conversion rate**
- **5.8%**
- **Avg BSR**
- **#573**
- **Page quality**
- **0%**
- **Prime**
- **100%**
- **Sponsored**
- **90%**
- **Out of stock**
- **2.9%**
- **Avg brand age**
- **53 months**
- **Avg seller age**
- **174 days**
## **Competition & brand share**
The top 5 products take 56% of clicks — established leaders, but buyers still shop beyond them.
**Brands**
**20 **▼falling
**Sellers**
**27**
**Top-5 brand share**
**59%**
Top 20: 100%
**Top-5 click share**
**56%**
Top 20: 99%
**Open market**
**36%**
- VSYLICN25% - ZHOU11% - 1 Body9% - QLIGES7% - Truvenzara7% - Ezyleaf Nutrition5%
## **Demand & seasonality**
Weekly Amazon search volume, last 104 weeks — -8.8% search growth over the last 90 days.
5K3KPrime Day '25Spike '25Spike '26 seasonSepDecMarJunAugNovMarMay
Peak months: Feb · busiest ÷ quietest = 2.3×
[**Open Trend **](https://flapen.com/research/uk/health-personal-care/thyroid-support-supplement/trend)
## **Top thyroid support supplement search terms**
- **thyroid support**55K/yr+6.7%4.7% conv. - **thyroid support supplement**16K/yr+54.3%4.7% conv. - **t3 supplement for thyroid**5K/yr+9.2%2.4% conv. - **thyroid**10K/yr-28.9%2.2% conv. - **thyroid supplements**20K/yr-66.6%2.9% conv. - **thyroid complex**3K/yr-31.0%6.8% conv. - **green leaf blends thyroid**3K/yr-79.8%2.2% conv. [**All search terms **](https://flapen.com/research/uk/health-personal-care/thyroid-support-supplement/search-terms)
## **Top thyroid support supplement products on Amazon**
Each bubble is one product — market share against review moat; bubble size tracks estimated sales, color grades how beatable the incumbent looks.
0%10%£11K20%£21K30%£32K40%£42K1101001K10K100K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 21 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**Vsylicn Thyroid Supplement Drops for Women and Men - Energy & Focus Formula with L Tyrosine Iodine Vitamin B12 Complex Zinc Ashwagandha Selenium Copper Coleus Forskohlii - Vegan & Non-GMO 60ml**VSYLICN**£18.99**4.0★224 rev](https://www.amazon.co.uk/dp/B0FS1FVM88) [2**Thyroid Support Supplement for Women - 90 Vegan Capsules - Advanced Complex with 13 Ingredients Including Iodine Magnesium Vitamin B12 L-Tyrosine Schizandra & Cayenne - Zhou**ZHOU**£12.26**4.3★594 rev](https://www.amazon.co.uk/dp/B081565LPT) [3**Thyroid Support Supplement for Women and Men - Energy & Focus Formula - Vegetarian & Non-GMO - Iodine Vitamin B12 Complex Zinc Selenium Ashwagandha Copper Coleus Forskohlii & More 30 Day Supply**1 Body**£20.82**4.1★21,936 rev](https://www.amazon.co.uk/dp/B00M13NHFY) [4**Thyroid Support Drops with Iodine & Selenium - 60ml | Enriched with L-Tyrosine Zinc Vitamin B12 & B6 | Supports Normal Thyroid Function & Energy Metabolism | Vegan & Non-GMO**QLIGES**£11.47**3.4★8 rev](https://www.amazon.co.uk/dp/B0GY356WCF) [5**Thyroid Support for Women | 15 Active Ingredients with Iodine Selenium Zinc & L-Tyrosine | Smart-Release Formula (120 Count (Pack of 1))**Truvenzara**£14.30**3.9★42 rev](https://www.amazon.co.uk/dp/B0FY2MHD1V)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**Thyroid Support Liquid Drops 60ml Selenium Zinc Iodine L-Tyrosine & Ashwagandha for Hormonal Balance Metabolism & Thyroid Health Support**YouEase**£12.63**7 rev2mo ago](https://www.amazon.co.uk/dp/B0GYQQJTKR) [**Thyroid Support Drops Natural Iodine Supplement with Selenium Zinc L-Tyrosine & Ashwagandha Fast Absorbing for Thyroid Health Energy & Focus Men & Women 60ml**XAYGHE**£11.98**4 rev3mo ago](https://www.amazon.co.uk/dp/B0GYD572W8) [**Thyroid Support Drops with Iodine & Selenium - 60ml | Enriched with L-Tyrosine Zinc Vitamin B12 & B6 | Supports Normal Thyroid Function & Energy Metabolism | Vegan & Non-GMO**QLIGES**£11.47**8 rev3mo ago](https://www.amazon.co.uk/dp/B0GY356WCF) [**2Pcs TryCure Thyroid Support Drops 2026 New Thyroid Support Drops Energy & Focus Formula Mood Sleep Support Natural Ingredients for Women and Men - 60ml**DEJIN**£9.67**1 rev3mo ago](https://www.amazon.co.uk/dp/B0GT8V1XH2) [**Thyroid Support for Women and Men with Iodine - Energy Focus & Power Thyroid Supplement - All Natural Herbal Mineral and Vitamin Complex with B12 Zinc Selenium Ashwagandha - 60 Vegetarian Capsules**ForestLeaf**£19.30**1,286 rev8mo ago](https://www.amazon.co.uk/dp/B072JZQ95V)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**Thyroid Support Drops with Iodine & Selenium - 60ml | Enriched with L-Tyrosine Zinc Vitamin B12 & B6 | Supports Normal Thyroid Function & Energy Metabolism | Vegan & Non-GMO**QLIGES**£11.47**3.4★**▲ 218%**](https://www.amazon.co.uk/dp/B0GY356WCF) [**Thyroid Support Liquid Drops 60ml Selenium Zinc Iodine L-Tyrosine & Ashwagandha for Hormonal Balance Metabolism & Thyroid Health Support**YouEase**£12.63**3.6★**▲ 217%**](https://www.amazon.co.uk/dp/B0GYQQJTKR) [**Thyroid Support Drops Natural Iodine Supplement with Selenium Zinc L-Tyrosine & Ashwagandha Fast Absorbing for Thyroid Health Energy & Focus Men & Women 60ml**XAYGHE**£11.98**4.7★**▲ 216%**](https://www.amazon.co.uk/dp/B0GYD572W8) [**2Pcs TryCure Thyroid Support Drops 2026 New Thyroid Support Drops Energy & Focus Formula Mood Sleep Support Natural Ingredients for Women and Men - 60ml**DEJIN**£9.67**5.0★**▲ 207%**](https://www.amazon.co.uk/dp/B0GT8V1XH2) [**Thyroid Support for Women and Men with Iodine - Energy Focus & Power Thyroid Supplement - All Natural Herbal Mineral and Vitamin Complex with B12 Zinc Selenium Ashwagandha - 60 Vegetarian Capsules**ForestLeaf**£19.30**4.4★**▲ 123%**](https://www.amazon.co.uk/dp/B072JZQ95V)
**~~View all trending →~~**
## **What buyers say about thyroid support supplement**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Energy Level**10%
*“I have more energy”*
**Quality-Overall**10%
*“Excellent product”*
**Taste-Overall**10%
*“The taste is quite strong”*
**Hormonal Balance**9%
*“thyroid support”*
**Value For Money**5%
*“Great value”*
**Sleep Quality**4%
*“I sleep better”*
**Weight Loss**3%
*“I do feel on a whole better its also started to make a difference with my weigh after time of gaining weight being strict”*
**Dosage**3%
*“manageable, and the bottle lasts well with regular use”*
**Ease Of Use**3%
*“Easy to use”*
**Vitamin**3%
*“I feel that this supplement has helped me to feel better over the weeks that i have used it”*
### **What buyers complain about **
**Value For Money**11%
*“They are slightly more expensive than some alternatives”*
**Taste-Overall**10%
*“tastes a bit yucky”*
**Side Effects**8%
*“headache every time after taking it”*
**Weight Loss**7%
*“However, the supplement has done nothing to help my weight, despite being in a carefully monitored calorie deficit, my weight remains stubbornly static”*
**Dosage**7%
*“The following day I took a much lower dose”*
**Functionality-Overall**6%
*“Don't work”*
**Energy Level**5%
*“My energy level seems to have increased slightly, however I seem to be suffering from more IBD than I normally do and its severe”*
**Quality-Overall**5%
*“that's not to say they wouldn't be great for someone else”*
**Ingredients-Overall**4%
*“Bad ingredients”*
**Size-Overall**3%
*“I find them quite large”*
### **Top return reasons **
**Color**100%
## **Common questions**
- **Is thyroid support supplement profitable to sell on Amazon United Kingdom?**
- The niche generates £105K/yr across 21 tracked products. 2 of 6 products launched in the last 360 days are still selling. 90-day search growth is -8.8%. Flapen's verdict: Worth a look (57/100).
- **How competitive is the thyroid support supplement niche?**
- 20 brands and 27 sellers compete. The top 5 products take 56% of clicks and top 5 brands hold 59% of demand.
- **What do buyers complain about in thyroid support supplement?**
- Top complaints mined from reviews: Value For Money, Taste-Overall, Side Effects. The return rate is 0.1%.
- **When does demand for thyroid support supplement peak?**
- Demand peaks in Feb; the busiest month runs 2.3× the quietest.
- **What does it cost to enter the thyroid support supplement niche?**
- Listings span £9.67–£29.17; the average listing price is £16.21 (sweet spot $15–$100). The average incumbent carries 1,403 reviews — the moat a new listing must climb.
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