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Immune System Booster

Fail

Demand is soft, at -44.4% this quarter, so Immune System Booster is a Fail.

Flapen Score
37
37 / 100
Ranks 1,848 of 2,035 Health & Personal Care niches · −11 vs the category median of 48
Market size
£132K/yr219K searches / yr
90-day growth
-44.4%search demand this quarter
Competition
75%top-5 click share · 15 brands · 157 sellers

Flapen Score

Immune System Booster against its category

The dotted line is the Health & Personal Care average. Past it, Immune System Booster is stronger. Inside it, weaker.

37Fail
Big MarketTrendingHigh ConversionOpen MarketLow ReturnsPrice rangeAvg priceNo Dominant BrandLow Review BarrierQuality Gap
This niche Category average

Market

The Immune System Booster market on Amazon at a glance

Shoppers on Amazon United Kingdom searched for Immune System Booster 219K times last year and spent an estimated £132K. The top 5 brands take 82% of clicks. Demand peaks in Jan–Feb–Mar. Flapen scores it 37 out of 100, a Fail.

01 · Demand

An estimated 6.7% of those searches ended in a purchase.

Shoppers searched for this 219K times in the last 12 months. That counts every search on Amazon United Kingdom for this niche's terms. An estimated 6.7% of those searches ended in a purchase. Searches in the last 90 days moved -44.4% against the 90 days before. Searches, conversion and average price together put the market at an estimated £132K a year.

Searches, last 12 months
219K
Growth, 90 days vs prior 90
-44.4%
Conversion, latest week
6.7%
Market size, estimated
£132Ka year
Peak month
January4.7× the quietest month
Top search term
immune support supplements35K searches a year

02 · Price

A sale here is worth £8.99.

Listings sell for £8.99 on average, from £3.88 to £20.76. Amazon reports units sold in ranges. This niche sold 15K to 20K a year. The average listing sells 750 to 1,000 of them. At £8.99 that is £7K to £9K a year per listing.

Average price
£8.99under the $15 to $100 sweet spot
Price range
£3.88–£20.76
Amazon United Kingdom median price
£12.12across 27,606 niches
Units sold a year
15K–20K
Units per listing a year
750–1,000
Revenue per listing a year
£7K–£9K
Returns
0.1%of orders · Amazon United Kingdom median 0.6%

03 · Entry bar

The bar here is reviews.

83% of listings pay for placement with sponsored ads. 100% ship with Prime. On an average day, 6.5% of listings are out of stock. The average listing ranks #209 within Over-the-Counter Medication. It carries 3,319 reviews at 4.56 stars, so a new listing needs social proof before a better product.

Sponsored listings
83%
Prime listings
100%
Out of stock, average day
6.5%
Average rank
#209in Over-the-Counter Medication
Average rating
4.56 starsAmazon United Kingdom average 4.36 stars
Average reviews
3,319per listing
Listings tracked
18

04 · Newcomers

0 of last year's 1 launches cleared the first-year sales bar.

1 products launched here in the last 12 months. 0 of them cleared the first-year sales bar, our mark for a successful launch. The brands on the shelf have sold for 61 months on average, so the names here are established.

Launched, last 12 months
1
Successful launches
0Amazon's first-year sales bar
Average brand age
61 months

Products

Top Immune System Booster products & what they sell for

The products selling here, as shoppers see them on Amazon. Shelf share and sales are our estimates.

Prices and ratings read from Amazon on Jul 25, 2026. The live listing can differ.

Competition

Competition: brands, sellers & click share

The top 5 products take an estimated 75% of clicks. A locked shelf that new listings rarely crack.

£0£13K£26K£40K£53K101001K10K100K Review Count Sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)

Brands

15 rising

Sellers

157

Est. top-5 brand share

82%

Top 20: 100%

Est. top-5 click share

75%

Top 20: 100%

Open market

16%

  • Immunace37%
  • NEW LEAF PRODUCTS21%
  • Berocca10%
  • HealthEssent7%
  • Sambucol7%
  • BioSchwartz3%
  • Open — no brand owns it (9 brands, 16%)

Demand

Immune System Booster search demand

Weekly searches over the year, seasonality beneath. Pick a range.

15K10KSpike '24Spike '25Holiday '25Spike '26SepDecMarJunAugNovMarMay

Peak months: Jan, Feb, Mar · busiest ÷ quietest = 4.7×

Search terms

Top Immune System Booster search terms shoppers use

The exact words shoppers type, with estimated yearly volume, growth, and conversion.

  • immune support supplements35K/yr
  • immune system booster65K/yr
  • immune support32K/yr
  • immunity booster17K/yr
  • immune9K/yr
  • immunace8K/yr
  • immunity8K/yr
  • immune system vitamins15K/yr
  • immunace extra protection5K/yr
  • immune booster for adults4K/yr

Reviews and returns

What reviews say buyers love and hate about Immune System Booster

We read the reviews and the return reasons for every product selling here.

15%of positive reviews mention “Value For Money”
16%of negative reviews mention “Taste-Overall”
0.1%of orders come back
“I don't like the taste”
A buyer, on “Taste-Overall”16% of negative reviews mention the same topic

Every topic

Every topic buyers talk about, one row each.

Red shows the share of negative reviews and green the share of positive reviews, biggest topic first. Open a row to read what they wrote.

19 topics

NegativePositive

FAQ

Common Immune System Booster questions

Answered from the same tracked data.

Figures on this page are estimates modeled from public Amazon pages and third-party keyword data. Amazon does not supply them, and no connected seller's data is used. How we handle Amazon data