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Spirulina and Chlorella Capsules

a concentrated shelf (top 5 take 89% of clicks) — Spirulina and Chlorella Capsules doesn't clear our bar today.

Flapen Score

36
Skip it
Market size 13Growth 21Conversion 94Competition 9Returns 99Price range 13Avg price 34Brand share 26Review moat 67Quality gap 24
This niche Category average

Is Spirulina and Chlorella Capsules profitable on Amazon?

According to Flapen's Amazon United Kingdom niche tracking, Spirulina and Chlorella Capsules is a £51K/yr Amazon United Kingdom market (43K searches/yr). The top 5 brands hold 89% of demand. Demand peaks in Aug–Sep. Verdict: Skip it — 36/100.

Spirulina and Chlorella Capsules: the Amazon niche in one read

Everything a seller checks before entering, in three answers.

Is the demand real?

Not really. Search demand moved -7.6% over the last 90 days and 11.8% of searches end in a purchase.

£51K

revenue / yr

Units sold / yr6K
Search volume / yr-7.6%43K
Conversion rate11.8%
Avg price£10.03

Who owns the niche?

The top 5 brands hold 89% of demand, so 11% of the market is open.

11%

open market share

Brands · sellers9 · 10
Top-5 product click share89%
Open market11%
Avg brand age59 months

Is there a way in?

Listing quality. The average product page scores 0/100 on content standards. Incumbents average 4.6★ — the gap to enter on.

0/100

page quality · 9 products

Sponsored placement100%
New entrants (1y)0· 0 succeeded
Avg rating4.6★
Avg reviews838

Top Spirulina and Chlorella Capsules 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 89% of clicks — a locked-up shelf that new listings rarely crack.

£0£5K£10K£15K£20K1101001K10K Review Count Sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)

Brands

9 rising

Sellers

10

Top-5 brand share

89%

Top 20: 100%

Top-5 click share

89%

Top 20: 100%

Open market

7%

  • ALPHA0139%
  • WeightWorld18%
  • SS Sport Supplies17%
  • Inner Vitality12%
  • MySuperfoods5%
  • Sevenhills Wholefoods4%
  • Open — no brand owns it (3 brands, 7%)

Spirulina and Chlorella Capsules demand & seasonality

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

Volume43KCVR11.8%Products9Brands9Top 5 Brands89%OOS Rate1.9%Rating4.6★Reviews838Avg BSR#15
2K2KSpike '24Spike '25Prime Day '25Spike '26SepDecMarJunAugNovMarMay

Peak months: Aug, Sep · busiest ÷ quietest = 2.1×

Top Spirulina and Chlorella Capsules search terms shoppers use

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

  • spirulina and chlorella capsules19K/yr
  • chlorella and spirulina15K/yr
  • spirulina and chlorella5K/yr
  • organic burst2K/yr
  • chlorella and spirulina tablets2K/yr

What reviews say buyers love and hate about Spirulina and Chlorella Capsules

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

What buyers love

81% of reviews
Quality-Overall31%

They are good quality easy to take

Vegan/Organic8%

We are vegan or plant based

Ease Of Use8%

Easy to take

Ease Of Chewing/Swallowing7%

I find this organic Spirulina & Chlorella easy to take and swallow, and of high quality

Value For Money7%

Real honest product offering great value

What buyers complain about

81% of reviews
Side Effects25%

Experienced unpleasant side effect

Quality-Overall10%

Ordinary

Regulates Digestion10%

I used to have some digestive problems

Dosage8%

My only concern is the dosage at 5 capsules daily

Vitamin5%

It started to regrow within maybe a week of taking the supplement

Common Spirulina and Chlorella Capsules questions

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

Flapen scores Spirulina and Chlorella Capsules 36/100 on Amazon United Kingdom — Skip it. The niche generates £51K/yr across 9 tracked products. Search demand moved -7.6% over the last 90 days.
Search demand for Spirulina and Chlorella Capsules on Amazon United Kingdom peaks in Aug–Sep, where the busiest month runs 2.1× the quietest.