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Riboflavin 400mg

prices mostly outside the sweet spot ($4.63–$15.81) — Riboflavin 400mg doesn't clear our bar today.

Flapen Score

40
Skip it
Market size 19Growth 18Conversion 97Competition 8Returns 100Price range 7Avg price 39Brand share 25Review moat 42Quality gap 65
This niche Category average

Is Riboflavin 400mg profitable on Amazon?

According to Flapen's Amazon United Kingdom niche tracking, Riboflavin 400mg is a £76K/yr Amazon United Kingdom market (45K searches/yr). The top 5 brands hold 90% of demand. Verdict: Skip it — 40/100.

Riboflavin 400mg: the Amazon niche in one read

Everything a seller checks before entering, in three answers.

Is the demand real?

Not really. Search demand moved -14.9% over the last 90 days and 15.9% of searches end in a purchase.

£76K

revenue / yr

Units sold / yr8K
Search volume / yr-14.9%45K
Conversion rate15.9%
Avg price£10.66

Who owns the niche?

The top 5 brands hold 90% of demand, so 10% of the market is open.

10%

open market share

Brands · sellers8 · 17
Top-5 product click share90%
Open market10%
Avg brand age71 months

Is there a way in?

Listing quality. The average product page scores 0/100 on content standards. Incumbents average 4.4★ — the gap to enter on.

0/100

page quality · 8 products

Sponsored placement75%
New entrants (1y)1· 0 succeeded
Avg rating4.4★
Avg reviews2,267

Top Riboflavin 400mg 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 90% of clicks — a locked-up shelf that new listings rarely crack.

£0£11K£23K£34K£46K1101001K10K100K Review Count Sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)

Brands

8 rising

Sellers

17

Top-5 brand share

90%

Top 20: 100%

Top-5 click share

90%

Top 20: 100%

Open market

6%

  • Health4All40%
  • MetaSuperfoods20%
  • Nutricost18%
  • Bespoke Biotics7%
  • Horbäach5%
  • ARC) HEALTH+NUTRITION WWW.ARCHEALTHNUTRITION.CO.UK4%
  • Open — no brand owns it (2 brands, 6%)

Riboflavin 400mg demand & seasonality

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

Volume45KCVR15.9%Products8Brands8Top 5 Brands90%OOS Rate1.7%Rating4.4★Reviews2,267Avg BSR#6
1K600Spike '25Prime Day '25Spike '26SepDecMarJunAugNovMarMay

No pronounced peak months · busiest ÷ quietest = 1.4×

Top Riboflavin 400mg search terms shoppers use

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

  • riboflavin 400mg24K/yr
  • vitamin b2 riboflavin 400mg12K/yr
  • riboflavin 400mg migraine6K/yr
  • vitamin b2 400mg4K/yr

What reviews say buyers love and hate about Riboflavin 400mg

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

What buyers love

86% of reviews
Value For Money25%

Good value for money

Ease Of Chewing/Swallowing16%

Easy to swallow

Quality-Overall13%

Good quality

Advertised Vs Actual Product8%

As described

Energy Level6%

Really good I have noticed a difference in my energy levels

What buyers complain about

72% of reviews
Side Effects12%

Unfortunately these had the opposite effect on me

Color10%

Warning your pee will be luminous yellow

Size-Overall9%

Very small box

Smell8%

Watch out packing product causes very smelly trumps

Stress/Anxiety7%

Caused me anxiety for some reason

Riboflavin 400mg return rate & reasons

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

0.0%

Return rate

0%

Fixable by listing

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

1Vitamin
100%

Common Riboflavin 400mg questions

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

Flapen scores Riboflavin 400mg 40/100 on Amazon United Kingdom — Skip it. The niche generates £76K/yr across 8 tracked products. 0 of 1 products launched in the last 360 days are still selling. Search demand moved -14.9% over the last 90 days.
Search demand for Riboflavin 400mg on Amazon United Kingdom is steady year-round — the busiest month runs 1.4× the quietest.