---
title: "Potassium Iodide — £33K/yr Amazon UK Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/uk/health-personal-care/potassium-iodide"
last_updated: "2026-07-31T13:51:49.185Z"
locale: en
meta:
description: "Niche score 38/100 · £33K/yr market · 40K searches/yr · £10.00 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:description": "Niche score 38/100 · £33K/yr market · 40K searches/yr · £10.00 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:title": "Potassium Iodide — £33K/yr Amazon UK Niche (2026) - Flapen"
---
# **potassium iodide**
**Skip it**
Soft demand (-73.1% this quarter) — this niche doesn't clear our bar today.
Market size 8Growth 0Conversion 80Competition 22Returns 99Price range 58Avg price 33Brand share 43Review moat 57Quality gap 35
**Returns**
**Incredible****0.1%**
return rate — above 5% kills the launch gate
**Conversion**
**Great****8.2%**
search→purchase rate — share of searches ending in a sale
**Price range**
**Good****£3.84–£30.42**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Review moat**
**Good****1,208**
avg incumbent reviews — the moat a new listing must climb
**Brand share**
**Okay****79%**
top-5 brand share — brands hold most of the demand
**Quality gap**
**Okay****4.5★**
avg incumbent rating — lower means beatable quality
**Avg price**
**Okay****£10.00**
avg listing price — sweet spot $15–$100
**Competition**
**Bad****74%**
top-5 click share — a locked-up shelf
**Market size**
**Bad****£33K**
£33K/yr · 40K searches
**Growth**
**Bad****-73.1%**
90-day search growth — must beat 0% to launch
According to Flapen's Amazon United Kingdom niche tracking, potassium iodide is a £33K/yr Amazon United Kingdom market (40K searches/yr). The top 5 brands hold 79% of demand. Demand peaks in Mar–Apr–Jun–Nov. Verdict: Skip it — 38/100.
Data updated Jul 25, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **potassium iodide market data**
- **Units sold / yr**
- **3K–4K**
- avg 250–500/product
- **Revenue / yr**
- **£30K–£40K**
- units × avg price
- **Conversion rate**
- **8.2%**
- **Avg BSR**
- **#36**
- **Page quality**
- **0%**
- **Prime**
- **100%**
- **Sponsored**
- **54%**
- **Out of stock**
- **18.6%**
- **Avg brand age**
- **70 months**
- **Avg seller age**
- **170 days**
## **Competition & brand share**
The top 5 products capture 74% of clicks — a locked-up shelf that new listings rarely crack.
**Brands**
**12 **▲rising
**Sellers**
**21**
**Top-5 brand share**
**79%**
Top 20: 100%
**Top-5 click share**
**74%**
Top 20: 100%
**Open market**
**17%**
- WeightWorld34% - Vitamatic18% - Nature's Fusions15% - Carlyle7% - Best Naturals5% - ARC) HEALTH+NUTRITION WWW.ARCHEALTHNUTRITION.CO.UK4% - Open — no brand owns it (6 brands, 17%)
## **Demand & seasonality**
Weekly Amazon search volume, last 104 weeks — -73.1% search growth over the last 90 days.
7K5KSpike '24Black Friday '24Holiday '24Spike '25Holiday '25Spike '26 seasonSepDecMarJunAugNovMarMay
Peak months: Mar, Apr, Jun, Nov · busiest ÷ quietest = 5.2×
[**Open Trend **](https://flapen.com/research/uk/health-personal-care/potassium-iodide/trend)
## **Top potassium iodide search terms**
- **potassium iodide**20K/yr-64.9%4.5% conv. - **potassium iodide tablets**16K/yr-77.4%6.7% conv. - **potassium iodide tablets anti radiation**3K/yr-77.8%5.7% conv. - **potassium iodide tablets 130 mg**2K/yr-88.9%3.7% conv. [**All search terms **](https://flapen.com/research/uk/health-personal-care/potassium-iodide/search-terms)
## **Top potassium iodide 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%£3K20%£7K30%£10K40%£13K101001K10K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 13 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**Iodine Tablets - 400mcg Potassium Iodide - 365 Vegan Tablets (1 Year Supply) - Non-GMO & Gluten-Free Iodine Supplement - Trace Mineral - Made in the UK**WeightWorld**£7.73**4.6★3,131 rev](https://www.amazon.co.uk/dp/B0924Q6VTF) [2**Vitamatic Potassium Iodide 65 mg per Serving - 60 Tablets - KI Pills**Vitamatic**£8.01**4.5★2,093 rev](https://www.amazon.co.uk/dp/B09TV9BWY8) [3**Potassium Iodide Radiation Tablets 130 mg (2 Pack) - (120 Tablets) EXP 10/2032 - Ki Pills Potassium Iodine Tablets for Radiation - Potassium Iodine Pills YODO Naciente Anti Nuclear Fallout Pills**Nature's Fusions**£30.42**4.7★3,049 rev](https://www.amazon.co.uk/dp/B09WKSTY82) [4**Iodine Tablets 500mcg | 365 Vegan Tablets - 1 Year Supply | High Strength Potassium Iodide Supplement | Trace Mineral | Carlyle**Carlyle**£5.68**4.5★177 rev](https://www.amazon.co.uk/dp/B0D8WL7VQ4) [5**Potassium Iodide Radiation Tablets 130 mg - (60 Tablets) EXP 10/2032 - Ki Pills Potassium Iodine Tablets for Radiation - Potassium Iodine Pills YODO Naciente Anti Nuclear Fallout Pills**Nature's Fusions**£18.98**4.7★3,049 rev](https://www.amazon.co.uk/dp/B09X6PTSM2)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**Iodine Supplement Tablets 400mcg High Strength Potassium Iodide - Non-GMO & Gluten-Free Iodine Supplement - Trace Mineral - UK Made (60)**ARC) HEALTH+NUTRITION WWW.ARCHEALTHNUTRITION.CO.UK**£3.84**25 rev1y ago](https://www.amazon.co.uk/dp/B0F72JQHYS) [**Iodine Tablets 500mcg | 365 Vegan Tablets - 1 Year Supply | High Strength Potassium Iodide Supplement | Trace Mineral | Carlyle**Carlyle**£5.68**177 rev2y ago](https://www.amazon.co.uk/dp/B0D8WL7VQ4) [**Life Extension Potassium Iodide 130mg High-Dose Iodine for Iodine Blockade of the Thyroid Gland 14 Vegan Tablets Lab-Tested Gluten-Free Vegetarian Soy-Free GMO-Free**Life Extension**£8.67**23 rev2y ago](https://www.amazon.co.uk/dp/B0CR42NSLL) [**Potassium Iodide Radiation Tablets 130 mg (2 Pack) - (120 Tablets) EXP 10/2032 - Ki Pills Potassium Iodine Tablets for Radiation - Potassium Iodine Pills YODO Naciente Anti Nuclear Fallout Pills**Nature's Fusions**£30.42**3,049 rev3y ago](https://www.amazon.co.uk/dp/B09WKSTY82) [**Potassium Iodide Radiation Tablets 130 mg - (60 Tablets) EXP 10/2032 - Ki Pills Potassium Iodine Tablets for Radiation - Potassium Iodine Pills YODO Naciente Anti Nuclear Fallout Pills**Nature's Fusions**£18.98**3,049 rev3y ago](https://www.amazon.co.uk/dp/B09X6PTSM2)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**Iodine Supplement Tablets 400mcg High Strength Potassium Iodide - Non-GMO & Gluten-Free Iodine Supplement - Trace Mineral - UK Made (60)**ARC) HEALTH+NUTRITION WWW.ARCHEALTHNUTRITION.CO.UK**£3.84**4.5★**▲ 128%**](https://www.amazon.co.uk/dp/B0F72JQHYS) [**Pure Encapsulations Iodine (Potassium Iodide) 225 UG - Hypoallergenic Supplement Supports Metabolism Healthy Skin and Thyroid Function - 60 Vegetarian Capsules**Pure Encapsulations**£10.47**4.4★**▲ 109%**](https://www.amazon.co.uk/dp/B07QYB67V9) [**Vitamatic Potassium Iodide 65 mg per Serving - 60 Tablets - KI Pills**Vitamatic**£8.01**4.5★**▲ 108%**](https://www.amazon.co.uk/dp/B09TV9BWY8) [**Potassium Iodide Radiation Tablets 130 mg (2 Pack) - (120 Tablets) EXP 10/2032 - Ki Pills Potassium Iodine Tablets for Radiation - Potassium Iodine Pills YODO Naciente Anti Nuclear Fallout Pills**Nature's Fusions**£30.42**4.7★**▲ 62%**](https://www.amazon.co.uk/dp/B09WKSTY82) [**Iodine Tablets 500mcg Potassium Iodide | 400 Vegan Tablets (1+ Year Supply - 1 Per Day) | High Strength Formula | 100% Recyclable & Resealable Pouch | by Horbaach**Horbäach**£6.37**4.5★**▲ 42%**](https://www.amazon.co.uk/dp/B0BRKZK3PM)
**~~View all trending →~~**
## **What buyers say about potassium iodide**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Value For Money**39%
*“Good value”*
**Quality-Overall**11%
*“Quality product”*
**Advertised Vs Actual Product**9%
*“arrived as expected”*
**Efficiency**7%
*“Working well”*
**Immunity Booster**4%
*“Immunity & Radiation protection”*
**Ease Of Chewing/Swallowing**4%
*“Easy to swallow”*
**Nutritional Content**4%
*“Good Supplement”*
**Size-Overall**4%
*“Excellent due to small size”*
**Hormonal Balance**4%
*“so far they seem to be supporting my under active thyroid”*
**Side Effects**3%
*“no side effects or reactions”*
### **What buyers complain about **
**Solubility**50%
*“It didn't even dissolve”*
**Taste-Overall**8%
*“I don't get the sea weed taste with these”*
## **Common questions**
- **Is potassium iodide profitable to sell on Amazon United Kingdom?**
- The niche generates £33K/yr across 13 tracked products. 90-day search growth is -73.1%. Flapen's verdict: Skip it (38/100).
- **How competitive is the potassium iodide niche?**
- 12 brands and 21 sellers compete. The top 5 products take 74% of clicks and top 5 brands hold 79% of demand.
- **What do buyers complain about in potassium iodide?**
- Top complaints mined from reviews: Solubility, Taste-Overall. The return rate is 0.1%.
- **When does demand for potassium iodide peak?**
- Demand peaks in Mar–Apr–Jun–Nov; the busiest month runs 5.2× the quietest.
- **What does it cost to enter the potassium iodide niche?**
- Listings span £3.84–£30.42; the average listing price is £10.00 (sweet spot $15–$100). The average incumbent carries 1,208 reviews — the moat a new listing must climb.
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