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Magtein

a small market ($38K/yr) — Magtein doesn't clear our bar today.

Flapen Score

42
Skip it
Market size 10Growth 16Conversion 79Competition 16Returns 100Price range 83Avg price 95Brand share 35Review moat 39Quality gap 37
This niche Category average

Is Magtein profitable on Amazon?

According to Flapen's Amazon United Kingdom niche tracking, Magtein is a £38K/yr Amazon United Kingdom market (21K searches/yr). The top 5 brands hold 84% of demand. Verdict: Skip it — 42/100.

Magtein: the Amazon niche in one read

Everything a seller checks before entering, in three answers.

Is the demand real?

Not really. Search demand moved -17.5% over the last 90 days and 7.9% of searches end in a purchase.

£38K

revenue / yr

Units sold / yr2K
Search volume / yr-17.5%21K
Conversion rate7.9%
Avg price£23.18

Who owns the niche?

The top 5 brands hold 84% of demand, so 16% of the market is open.

16%

open market share

Brands · sellers10 · 35
Top-5 product click share81%
Open market16%
Avg brand age35 months

Is there a way in?

Listing quality. The average product page scores 0/100 on content standards. Incumbents average 4.5★ — the gap to enter on.

0/100

page quality · 11 products

Sponsored placement82%
New entrants (1y)3· 0 succeeded
Avg rating4.5★
Avg reviews2,630

Top Magtein products & what they sell for

Every tracked product — its share of the shelf, its review moat, and what it sells for.

Competition: brands, sellers & click share

The top 5 products capture 81% of clicks — a locked-up shelf that new listings rarely crack.

£0£6K£11K£17K£23K1101001K10K100K Review Count Sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)

Brands

10 rising

Sellers

35

Top-5 brand share

84%

Top 20: 100%

Top-5 click share

81%

Top 20: 100%

Open market

12%

  • Time Health41%
  • Vinco Supplements13%
  • swiss bioenergetics11%
  • Double Wood Supplements10%
  • Hexagon9%
  • Intelligent Labs4%
  • Open — no brand owns it (4 brands, 12%)

Magtein demand & seasonality

Weekly search volume, with the niche's key stats alongside.

Volume21KCVR7.9%Products11Brands10Top 5 Brands84%OOS Rate7.7%Rating4.5★Reviews2,630Avg BSR#471
500300Apr '26May '26May '26May '26Jun '26Jun '26Jul '26

What reviews say buyers love and hate about Magtein

What buyers mention most, as a share of all reviews.

What buyers love

90% of reviews
Sleep Quality26%

Better sleep

Quality-Overall20%

So far, good quality for money, no side effects

Magnesium15%

Good quality magnesium supplement

Efficiency7%

It is very efficient

Value For Money4%

these are great value

What buyers complain about

81% of reviews
Sleep Quality18%

Made no difference to my sleep

Magnesium13%

took it two hours after my breakfast due to drinking tea which would gave a negative effect on the magnesium

Value For Money13%

Therefore these are 4 X more expensive than advertised

Acid Regulator/Stomach Ache Relief9%

Abdominal pain

Side Effects8%

you have to be aware that you are taking massive doses of magnesium if you take it according to the instructions, way a over the recommended daily intake and for some people this causes abdominal pain and other issues, and may not be good for heart and kidneys on a long term basis

Magtein return rate & reasons

Why buyers send it back, as a share of all return requests.

0.1%

Return rate

0%

Fixable by listing

The "fixable" share counts expectation-mismatch reasons — size, look, advertised-vs-actual — that better copy and images address.

1Magnesium
100%

Common Magtein questions

The questions sellers ask about this niche, answered from the tracked metrics.

Flapen scores Magtein 42/100 on Amazon United Kingdom — Skip it. The niche generates £38K/yr across 11 tracked products. 0 of 3 products launched in the last 360 days are still selling. Search demand moved -17.5% over the last 90 days.
Magtein buyers on Amazon United Kingdom complain most about Sleep Quality, Magnesium, Value For Money, the themes mined from the niche's reviews. Its return rate is 0.1%.