---
title: "Selenium — £207K/yr Amazon UK Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/uk/health-personal-care/selenium"
last_updated: "2026-07-31T13:04:33.966Z"
locale: en
meta:
description: "Niche score 44/100 · £207K/yr market · 176K searches/yr · £7.83 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:description": "Niche score 44/100 · £207K/yr market · 176K searches/yr · £7.83 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:title": "Selenium — £207K/yr Amazon UK Niche (2026) - Flapen"
---
# **selenium**
**Skip it**
Prices mostly outside the sweet spot ($4.81–$13.87) — this niche doesn't clear our bar today.
Market size 40Growth 18Conversion 97Competition 24Returns 100Price range 0Avg price 22Brand share 56Review moat 45Quality gap 27
**Returns**
**Incredible****0.0%**
return rate — above 5% kills the launch gate
**Conversion**
**Incredible****15.0%**
search→purchase rate — share of searches ending in a sale
**Brand share**
**Good****71%**
top-5 brand share — brands hold most of the demand
**Review moat**
**Okay****2,009.83**
avg incumbent reviews — the moat a new listing must climb
**Market size**
**Okay****£207K**
£207K/yr · 176K searches
**Quality gap**
**Okay****4.6★**
avg incumbent rating — lower means beatable quality
**Competition**
**Bad****71%**
top-5 click share — a locked-up shelf
**Avg price**
**Bad****£7.83**
avg listing price — sweet spot $15–$100
**Growth**
**Bad****-13.6%**
90-day search growth — must beat 0% to launch
**Price range**
**Bad****£4.81–£13.87**
cheapest to priciest tracked listing — scored on the share inside $15–$100
According to Flapen's Amazon United Kingdom niche tracking, selenium is a £207K/yr Amazon United Kingdom market (176K searches/yr). The top 5 brands hold 71% of demand. Verdict: Skip it — 44/100.
Data updated Jul 25, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **selenium market data**
- **Units sold / yr**
- **25K–30K**
- avg 1,500–2,000/product
- **Revenue / yr**
- **£196K–£235K**
- units × avg price
- **Conversion rate**
- **15.0%**
- **Avg BSR**
- **#7**
- **Page quality**
- **0%**
- **Prime**
- **100%**
- **Sponsored**
- **83%**
- **Out of stock**
- **7.7%**
- **Avg brand age**
- **66 months**
- **Avg seller age**
- **174 days**
## **Competition & brand share**
The top 5 products capture 71% of clicks — a locked-up shelf that new listings rarely crack.
**Brands**
**12 **▲rising
**Sellers**
**16**
**Top-5 brand share**
**71%**
Top 20: 100%
**Top-5 click share**
**71%**
Top 20: 100%
**Open market**
**22%**
- WeightWorld34% - Solgar13% - NEW LEAF PRODUCTS10% - Nutravita7% - Zipvit7% - Horbäach6%
## **Demand & seasonality**
Weekly Amazon search volume, last 104 weeks — -13.6% search growth over the last 90 days.
4K3KSpike '25 seasonSepDecMarJunAugNovMarMay
No pronounced peak months · busiest ÷ quietest = 1.3×
[**Open Trend **](https://flapen.com/research/uk/health-personal-care/selenium/trend)
## **Top selenium search terms**
- **selenium**109K/yr-18.0%12.8% conv. - **selenium supplements**52K/yr-4.6%11.6% conv. - **selenium 200mcg**5K/yr-16.3%11.8% conv. - **selenomethionine**3K/yr-3.7%8.2% conv. - **selen**4K/yr-10.6%4.0% conv. - **selenium supplement**3K/yr-4.3%8.8% conv. [**All search terms **](https://flapen.com/research/uk/health-personal-care/selenium/search-terms)
## **Top selenium 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%£21K20%£41K30%£62K40%£83K101001K10K100K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 12 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**Selenium Supplements 200mcg - 365 Tablets - 1 Year Supply - Bioavailable Sodium Selenite Form - 1-a-Day - Small in Size (6mm) - Vegan & Non-GMO Selenium Tablets**WeightWorld**£7.85**4.5★3,300 rev](https://www.amazon.co.uk/dp/B0924Q1H5X) [2**Solgar Selenium (Yeast-Free) 200 g Tablets - Pack of 50 - Healthy Hair and Nails - Supports the Immune System - Vegan and Gluten Free**Solgar**£8.03**4.7★2,521 rev](https://www.amazon.co.uk/dp/B000Z92LB2) [3**Selenium Tablets - 365 Vegan Selenium Tablets 200g Per Serving - Supports Normal Immune System & Thyroid Function - 12 Month Supply Made in The UK By New Leaf**NEW LEAF PRODUCTS**£8.19**4.8★79 rev](https://www.amazon.co.uk/dp/B0FWS11XMN) [4**Nutravita Selenium Supplements 250mcg ACE with Vitamin A C & E - 400 Vegan Tablets (1+ Year Supply) - Support Normal Function of Immune System & Thyroid - Support Hair Skin & Nails - Made in the UK**Nutravita**£4.81**4.6★184 rev](https://www.amazon.co.uk/dp/B0FMS77S8L) [5**Zipvit Selenium 200mcg with Vitamins A C E. 180 Vegan Tablets. Supports Normal Thyroid Skin Hair & Nails Immune System and Antioxidant Protection. 6 Month Supply. UK Supplier.**Zipvit**£6.62**4.6★2,134 rev](https://www.amazon.co.uk/dp/B06Y3KBVYT)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**Selenium Tablets - 365 Vegan Selenium Tablets 200g Per Serving - Supports Normal Immune System & Thyroid Function - 12 Month Supply Made in The UK By New Leaf**NEW LEAF PRODUCTS**£8.19**79 rev9mo ago](https://www.amazon.co.uk/dp/B0FWS11XMN) [**Nutravita Selenium Supplements 250mcg ACE with Vitamin A C & E - 400 Vegan Tablets (1+ Year Supply) - Support Normal Function of Immune System & Thyroid - Support Hair Skin & Nails - Made in the UK**Nutravita**£4.81**184 rev11mo ago](https://www.amazon.co.uk/dp/B0FMS77S8L) [**Solaray Selenium 200mcg 90 Vegan Capsules L-Selenomethionine Supplement**SOLARAY**£6.32**48 rev1y ago](https://www.amazon.co.uk/dp/B0DLPFWR6L) [**Selenium 200g - 120 Capsules 4 Month Supply as Selenomethionine the Naturally Occurring Form with Superior bioavailability - Made in the UK**swiss bioenergetics**£7.87**197 rev2y ago](https://www.amazon.co.uk/dp/B0CGMDMNF8) [**Selenium Supplements 200mcg - 365 Tablets - 1 Year Supply - Bioavailable Sodium Selenite Form - 1-a-Day - Small in Size (6mm) - Vegan & Non-GMO Selenium Tablets**WeightWorld**£7.85**3,300 rev5y ago](https://www.amazon.co.uk/dp/B0924Q1H5X)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**Biotin Hair Growth Supplement - 180 Vegan Tablets Enhanced with Zinc & Selenium Hair Vitamins Complex - Biotin 10000 mcg - Hair Skin and Nails Vitamins for Women & Men UK (Packaging Design May Vary)**Nutrition Geeks**£5.66**4.4★**▲ 81%**](https://www.amazon.co.uk/dp/B08XBGJMK3) [**Selenium Tablets - 365 Vegan Selenium Tablets 200g Per Serving - Supports Normal Immune System & Thyroid Function - 12 Month Supply Made in The UK By New Leaf**NEW LEAF PRODUCTS**£8.19**4.8★**▲ 57%**](https://www.amazon.co.uk/dp/B0FWS11XMN) [**Nutravita Selenium Supplements 250mcg ACE with Vitamin A C & E - 400 Vegan Tablets (1+ Year Supply) - Support Normal Function of Immune System & Thyroid - Support Hair Skin & Nails - Made in the UK**Nutravita**£4.81**4.6★**▲ 48%**](https://www.amazon.co.uk/dp/B0FMS77S8L) [**Selenium 200mcg - 180 Tablets Yeast Free L-Selenomethionine Supplements Natural Immune System & Thyroid - Resealable and Recyclable Pouch by Alpha01**ALPHA01**£4.93**4.5★**▲ 35%**](https://www.amazon.co.uk/dp/B0D2BPFV4K) [**Pure Encapsulations Selenium 200ug - Selenomethionine Supplement for Immune and Thyroid Function Support - 60 Vegetarian Capsules**Pure Encapsulations**£12.26**4.7★**▲ 16%**](https://www.amazon.co.uk/dp/B07QWBDM2K)
**~~View all trending →~~**
## **What buyers say about selenium**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Hair Growth**21%
*“Helps your hair grow”*
**Quality-Overall**17%
*“Amazing quality”*
**Value For Money**14%
*“Good price”*
**Ease Of Chewing/Swallowing**8%
*“Easy to swallow”*
**Vitamin**4%
*“Great supplement works well”*
**Ease Of Use**3%
*“easy to use”*
**Advertised Vs Actual Product**3%
*“Yes it does the job”*
**Side Effects**2%
*“I saw no effects for a while”*
**Thickness**2%
*“Excellent product hair looks a little thicker”*
**Efficiency**2%
*“results are subtle”*
### **What buyers complain about **
**Functionality-Overall**15%
*“Did not work”*
**Smell**8%
*“they smell foul”*
**Value For Money**6%
*“a £2 price increase”*
**Thickness**6%
*“Hair has come a bit thicker”*
**Hair Related**6%
*“My hair was falling out in clumps”*
**Dosage**4%
*“I only take 1 a day not 2”*
**Size-Overall**4%
*“Theyre also tiny”*
**Nutritional Content**4%
*“When I looked into it I also noticed this level of biotin is really quite unnecessary”*
**Side Effects**3%
*“Not sure about these as they made me ill”*
**Vitamin**3%
*“Started taking this along side my other Vitamins x thinking it would help x how wrong I was x caused me to break out in dreadful spots on”*
## **Common questions**
- **Is selenium profitable to sell on Amazon United Kingdom?**
- The niche generates £207K/yr across 12 tracked products. 0 of 2 products launched in the last 360 days are still selling. 90-day search growth is -13.6%. Flapen's verdict: Skip it (44/100).
- **How competitive is the selenium niche?**
- 12 brands and 16 sellers compete. The top 5 products take 71% of clicks and top 5 brands hold 71% of demand.
- **What do buyers complain about in selenium?**
- Top complaints mined from reviews: Functionality-Overall, Smell, Value For Money. The return rate is 0.0%.
- **When does demand for selenium peak?**
- Demand is steady year-round — the busiest month runs 1.3× the quietest.
- **What does it cost to enter the selenium niche?**
- Listings span £4.81–£13.87; the average listing price is £7.83 (sweet spot $15–$100). The average incumbent carries 2,010 reviews — the moat a new listing must climb.
## **Related niches in Health & Personal Care**
- 69 [**cooling towel**](https://flapen.com/research/uk/health-personal-care/cooling-towel)£1.1M/yr>1,000%**Launch it**- 70 [**collagen**](https://flapen.com/research/uk/health-personal-care/collagen)£6.6M/yr-20.1%**Worth a look**- 70 [**dry skin remover feet**](https://flapen.com/research/uk/health-personal-care/dry-skin-remover-feet)£236K/yr+78.2%**Worth a look**- 70 [**stryde knee strap**](https://flapen.com/research/uk/health-personal-care/stryde-knee-strap)£112K/yr>1,000%**Worth a look**- 70 [**libre 2 sensor covers**](https://flapen.com/research/uk/health-personal-care/libre-2-sensor-covers)£240K/yr+67.1%**Worth a look**- 70 [**water retention tablets**](https://flapen.com/research/uk/health-personal-care/water-retention-tablets)£470K/yr+47.2%**Worth a look**[**All Health & Personal Care niches **](https://flapen.com/research/uk/health-personal-care)