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Magnesium Supplements

Fail

Prices span $3.44–$9.37, mostly outside the sweet spot, so Magnesium Supplements is a Fail.

Flapen Score
44
44 / 100
Ranks 1,348 of 2,035 Health & Personal Care niches · −4 vs the category median of 48
Market size
£4.8M/yr4.6M searches / yr
90-day growth
-28.8%search demand this quarter
Competition
93%top-5 click share · 7 brands · 35 sellers

Flapen Score

Magnesium Supplements against its category

The dotted line is the Health & Personal Care average. Past it, Magnesium Supplements is stronger. Inside it, weaker.

44Fail
Big MarketTrendingHigh ConversionOpen MarketLow ReturnsPrice rangeAvg priceNo Dominant BrandLow Review BarrierQuality Gap
This niche Category average

Market

The Magnesium Supplements market on Amazon at a glance

Shoppers on Amazon United Kingdom searched for Magnesium Supplements 4.6M times last year and spent an estimated £4.8M. The top 5 brands take 93% of clicks. Demand peaks in Jan. Flapen scores it 44 out of 100, a Fail.

01 · Demand

An estimated 14.8% of those searches ended in a purchase.

Shoppers searched for this 4.6M times in the last 12 months. That counts every search on Amazon United Kingdom for this niche's terms. An estimated 14.8% of those searches ended in a purchase. Searches in the last 90 days moved -28.8% against the 90 days before. Searches, conversion and average price together put the market at an estimated £4.8M a year.

Searches, last 12 months
4.6M
Growth, 90 days vs prior 90
-28.8%
Conversion, latest week
14.8%
Market size, estimated
£4.8Ma year
Peak month
January1.7× the quietest month
Top search term
magnesium2.2M searches a year

02 · Price

A sale here is worth £6.94.

Listings sell for £6.94 on average, from £3.44 to £9.37. Amazon reports units sold in ranges. This niche sold 600K to 800K a year. The average listing sells 100,000 to 125,000 of them. At £6.94 that is £694K to £868K a year per listing.

Average price
£6.94under the $15 to $100 sweet spot
Price range
£3.44–£9.37
Amazon United Kingdom median price
£12.12across 27,606 niches
Units sold a year
600K–800K
Units per listing a year
100,000–125,000
Revenue per listing a year
£694K–£868K
Returns
0.1%of orders · Amazon United Kingdom median 0.6%

03 · Entry bar

The bar here is reviews.

86% of listings pay for placement with sponsored ads. 100% ship with Prime. On an average day, 0.0% of listings are out of stock. The average listing ranks #8 within Herbal Supplements. It carries 9,416 reviews at 4.54 stars, so a new listing needs social proof before a better product.

Sponsored listings
86%
Prime listings
100%
Out of stock, average day
0.0%
Average rank
#8in Herbal Supplements
Average rating
4.54 starsAmazon United Kingdom average 4.36 stars
Average reviews
9,416per listing
Listings tracked
7

04 · Newcomers

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

1 products launched here in the last 12 months. 1 of them cleared the first-year sales bar, our mark for a successful launch. The brands on the shelf have sold for 46 months on average, so the names here are settling in.

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

Products

Top Magnesium Supplements 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 93% of clicks. A locked shelf that new listings rarely crack.

£0£952K£1.9M£2.9M£3.8M1001K10K100K Review Count Sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)

Brands

7 falling

Sellers

35

Est. top-5 brand share

93%

Top 20: 100%

Est. top-5 click share

93%

Top 20: 100%

Open market

3%

  • Nutrition Geeks65%
  • Vitabiotics Ultra13%
  • Free Soul5%
  • Nutrivo5%
  • Zipvit5%
  • WeightWorld3%
  • Open — no brand owns it (1 brand, 3%)

Demand

Magnesium Supplements search demand

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

125K75KSpike '24Spike '25Spike '26SepDecMarJunAugNovMarMay

Peak months: Jan · busiest ÷ quietest = 1.7×

Search terms

Top Magnesium Supplements search terms shoppers use

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

  • magnesium2.2M/yr
  • magnesium glycinate 3-in-1815K/yr
  • nutrition geeks magnesium306K/yr
  • magnesium supplements542K/yr
  • geeks magnesium glycinate 3-in-1196K/yr
  • magnesium tablets150K/yr
  • magnesium for sleep58K/yr
  • nutrition geeks magnesium 3 in 161K/yr
  • magnesium sleep48K/yr
  • glycinate 3 in 134K/yr

Reviews and returns

What reviews say buyers love and hate about Magnesium Supplements

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

25%of positive reviews mention “Sleep Quality”
15%of negative reviews mention “Sleep Quality”
0.1%of orders come back
“No sleep”
A buyer, on “Sleep Quality”15% 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.

16 topics

NegativePositive

FAQ

Common Magnesium Supplements 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