thyroid support supplement
Worth a lookShows low returns (0.1%), but a failed launch gate (market size, growth, or returns) keeps it on the watch list.
Returns
Incredible0.1%return rate — above 5% kills the launch gate
Quality gap
Great4.2★avg incumbent rating — lower means beatable quality
Avg price
Great£16.21avg listing price — sweet spot $15–$100
Brand share
Great59%top-5 brand share — no brand owns this niche
Price range
Good£9.67–£29.17cheapest to priciest tracked listing — scored on the share inside $15–$100
Conversion
Good5.8%search→purchase rate — share of searches ending in a sale
Review moat
Good1,403.33avg incumbent reviews — the moat a new listing must climb
Competition
Okay56%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
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
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.Peak months: Feb · busiest ÷ quietest = 2.3×
Top thyroid support supplement search terms
- thyroid support55K/yr
- thyroid support supplement16K/yr
- t3 supplement for thyroid5K/yr
- thyroid10K/yr
- thyroid supplements20K/yr
- thyroid complex3K/yr
- green leaf blends thyroid3K/yr
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.
All 21 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
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£18.994.0★224 rev
Thyroid Support Supplement for Women - 90 Vegan Capsules - Advanced Complex with 13 Ingredients Including Iodine Magnesium Vitamin B12 L-Tyrosine Schizandra & Cayenne - Zhou
ZHOU£12.264.3★594 rev
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£20.824.1★21,936 rev
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£11.473.4★8 rev
Thyroid Support for Women | 15 Active Ingredients with Iodine Selenium Zinc & L-Tyrosine | Smart-Release Formula (120 Count (Pack of 1))
Truvenzara£14.303.9★42 rev
Newest
by launch date
Thyroid Support Liquid Drops 60ml Selenium Zinc Iodine L-Tyrosine & Ashwagandha for Hormonal Balance Metabolism & Thyroid Health Support
YouEase£12.637 rev
Thyroid Support Drops Natural Iodine Supplement with Selenium Zinc L-Tyrosine & Ashwagandha Fast Absorbing for Thyroid Health Energy & Focus Men & Women 60ml
XAYGHE£11.984 rev
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£11.478 rev
2Pcs TryCure Thyroid Support Drops 2026 New Thyroid Support Drops Energy & Focus Formula Mood Sleep Support Natural Ingredients for Women and Men - 60ml
DEJIN£9.671 rev
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£19.301,286 rev
Trending
90-day click momentumThyroid Support Drops with Iodine & Selenium - 60ml | Enriched with L-Tyrosine Zinc Vitamin B12 & B6 | Supports Normal Thyroid Function & Energy Metabolism | Vegan & Non-GMO
QLIGES£11.473.4★
Thyroid Support Liquid Drops 60ml Selenium Zinc Iodine L-Tyrosine & Ashwagandha for Hormonal Balance Metabolism & Thyroid Health Support
YouEase£12.633.6★
Thyroid Support Drops Natural Iodine Supplement with Selenium Zinc L-Tyrosine & Ashwagandha Fast Absorbing for Thyroid Health Energy & Focus Men & Women 60ml
XAYGHE£11.984.7★
2Pcs TryCure Thyroid Support Drops 2026 New Thyroid Support Drops Energy & Focus Formula Mood Sleep Support Natural Ingredients for Women and Men - 60ml
DEJIN£9.675.0★
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£19.304.4★
What buyers say about thyroid support supplement
What buyers praise and complain about, mined from review topics.What buyers love
“I have more energy”
“Excellent product”
“The taste is quite strong”
“thyroid support”
“Great value”
“I sleep better”
“I do feel on a whole better its also started to make a difference with my weigh after time of gaining weight being strict”
“manageable, and the bottle lasts well with regular use”
“Easy to use”
“I feel that this supplement has helped me to feel better over the weeks that i have used it”
What buyers complain about
“They are slightly more expensive than some alternatives”
“tastes a bit yucky”
“headache every time after taking it”
“However, the supplement has done nothing to help my weight, despite being in a carefully monitored calorie deficit, my weight remains stubbornly static”
“The following day I took a much lower dose”
“Don't work”
“My energy level seems to have increased slightly, however I seem to be suffering from more IBD than I normally do and its severe”
“that's not to say they wouldn't be great for someone else”
“Bad ingredients”
“I find them quite large”
Top return reasons
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.