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.

potassium iodide

Skip it

Soft demand (-73.1% this quarter) — this niche doesn't clear our bar today.

Returns

Incredible0.1%

return rate — above 5% kills the launch gate

Conversion

Great8.2%

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

Good1,208

avg incumbent reviews — the moat a new listing must climb

Brand share

Okay79%

top-5 brand share — brands hold most of the demand

Quality gap

Okay4.5★

avg incumbent rating — lower means beatable quality

Avg price

Okay£10.00

avg listing price — sweet spot $15–$100

Competition

Bad74%

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

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

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.

Peak months: Mar, Apr, Jun, Nov · busiest ÷ quietest = 5.2×

Open Trend

Top potassium iodide search terms

potassium iodide20K/yr -64.9%4.5% conv.
potassium iodide tablets16K/yr -77.4%6.7% conv.
potassium iodide tablets anti radiation3K/yr -77.8%5.7% conv.
potassium iodide tablets 130 mg2K/yr -88.9%3.7% conv.

All 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.

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

Iodine Tablets - 400mcg Potassium Iodide - 365 Vegan Tablets (1 Year Supply) - Non-GMO & Gluten-Free Iodine Supplement - Trace Mineral - Made in the UK

WeightWorld£7.734.6★3,131 rev

Vitamatic Potassium Iodide 65 mg per Serving - 60 Tablets - KI Pills

Vitamatic£8.014.5★2,093 rev

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£30.424.7★3,049 rev

Iodine Tablets 500mcg | 365 Vegan Tablets - 1 Year Supply | High Strength Potassium Iodide Supplement | Trace Mineral | Carlyle

Carlyle£5.684.5★177 rev

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£18.984.7★3,049 rev

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£3.8425 rev

1y ago

Iodine Tablets 500mcg | 365 Vegan Tablets - 1 Year Supply | High Strength Potassium Iodide Supplement | Trace Mineral | Carlyle

Carlyle£5.68177 rev

2y ago

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£8.6723 rev

2y ago

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£30.423,049 rev

3y ago

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£18.983,049 rev

3y ago

What buyers say about potassium iodide

What buyers praise and complain about, mined from review topics.

What buyers love

Value For Money39%

“Good value”

Quality-Overall11%

“Quality product”

Advertised Vs Actual Product9%

“arrived as expected”

Efficiency7%

“Working well”

Immunity Booster4%

“Immunity & Radiation protection”

Ease Of Chewing/Swallowing4%

“Easy to swallow”

Nutritional Content4%

“Good Supplement”

Size-Overall4%

“Excellent due to small size”

Hormonal Balance4%

“so far they seem to be supporting my under active thyroid”

Side Effects3%

“no side effects or reactions”

What buyers complain about

Solubility50%

“It didn't even dissolve”

Taste-Overall8%

“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.