---
title: "Spirulina and Chlorella Capsules — £51K/yr Amazon UK Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/uk/health-personal-care/spirulina-and-chlorella-capsules"
last_updated: "2026-07-31T12:45:48.511Z"
locale: en
meta:
description: "Niche score 36/100 · £51K/yr market · 43K searches/yr · £10.03 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:description": "Niche score 36/100 · £51K/yr market · 43K searches/yr · £10.03 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:title": "Spirulina and Chlorella Capsules — £51K/yr Amazon UK Niche (2026) - Flapen"
---
# **spirulina and chlorella capsules**
**Skip it**
A concentrated shelf (top 5 take 89% of clicks) — this niche doesn't clear our bar today.
Market size 13Growth 21Conversion 94Competition 9Returns 99Price range 13Avg price 34Brand share 26Review moat 67Quality gap 24
**Returns**
**Incredible****0.1%**
return rate — above 5% kills the launch gate
**Conversion**
**Great****11.8%**
search→purchase rate — share of searches ending in a sale
**Review moat**
**Good****838.33**
avg incumbent reviews — the moat a new listing must climb
**Avg price**
**Okay****£10.03**
avg listing price — sweet spot $15–$100
**Brand share**
**Okay****89%**
top-5 brand share — brands hold most of the demand
**Quality gap**
**Bad****4.6★**
avg incumbent rating — lower means beatable quality
**Growth**
**Bad****-7.6%**
90-day search growth — must beat 0% to launch
**Market size**
**Bad****£51K**
£51K/yr · 43K searches
**Price range**
**Bad****£6.53–£16.26**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Competition**
**Bad****89%**
top-5 click share — a locked-up shelf
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.
Data updated Jul 25, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **spirulina and chlorella capsules market data**
- **Units sold / yr**
- **5K–6K**
- avg 500–750/product
- **Revenue / yr**
- **£50K–£60K**
- units × avg price
- **Conversion rate**
- **11.8%**
- **Avg BSR**
- **#15**
- **Page quality**
- **0%**
- **Prime**
- **100%**
- **Sponsored**
- **100%**
- **Out of stock**
- **1.9%**
- **Avg brand age**
- **59 months**
- **Avg seller age**
- **187 days**
## **Competition & brand share**
The top 5 products capture 89% of clicks — a locked-up shelf that new listings rarely crack.
**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%)
## **Demand & seasonality**
Weekly Amazon search volume, last 104 weeks — -7.6% search growth over the last 90 days.
2K2KSpike '24Spike '25Prime Day '25Spike '26 seasonSepDecMarJunAugNovMarMay
Peak months: Aug, Sep · busiest ÷ quietest = 2.1×
[**Open Trend **](https://flapen.com/research/uk/health-personal-care/spirulina-and-chlorella-capsules/trend)
## **Top spirulina and chlorella capsules search terms**
- **spirulina and chlorella capsules**19K/yr+3.8%12.7% conv. - **chlorella and spirulina**15K/yr-27.6%10.1% conv. - **spirulina and chlorella**5K/yr+23.5%10.3% conv. - **organic burst**2K/yr+4.0%1.8% conv. - **chlorella and spirulina tablets**2K/yr-39.5%14.4% conv. [**All search terms **](https://flapen.com/research/uk/health-personal-care/spirulina-and-chlorella-capsules/search-terms)
## **Top spirulina and chlorella capsules products on Amazon**
Each bubble is one product — market share against review moat; bubble size tracks estimated sales, color grades how beatable the incumbent looks.
0%10%£5K20%£10K30%£15K40%£20K1101001K10K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 9 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**Organic Spirulina & Chlorella 2000mg - 300 Tablets - Broken Cell Wall - Cold Pressed Pure Supplement with No Additives (75 Day Supply) by Alpha01**ALPHA01**£7.25**4.6★1,208 rev](https://www.amazon.co.uk/dp/B09153XCCN) [2**Organic Spirulina and Chlorella Capsules - 80 Days Supply - 240 Capsules - Soil Association Certified - Nutrient-Rich Algae Superfoods - Chlorella and Spirulina Herbal Supplements with No Additives**WeightWorld**£11.56**4.6★2,393 rev](https://www.amazon.co.uk/dp/B091L12RBL) [3**Organic Chlorella and Spirulina - 2500mg - 300 Tablets - Broken Cell Wall - Pure Formula Supplement with No Additives**SS Sport Supplies**£9.11**4.6★442 rev](https://www.amazon.co.uk/dp/B0DMPCTX3D) [4**Organic Spirulina & Chlorella 400 Easy to Swallow Tablets - Natural Vitamins & Minerals - Broken Cell Wall Pure 2000mg Daily Dose Supplement by Inner Vitality**Inner Vitality**£8.10**4.6★528 rev](https://www.amazon.co.uk/dp/B0DYJH4T5D) [5**Spirulina & Chlorella Tablets | 5000mg per Serving | 300 Tablets | Organic | Immune Support & Natural Detox | MySuperfoods**MySuperfoods**£9.16**4.6★40 rev](https://www.amazon.co.uk/dp/B0DPMV8XTR)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**Organic Spirulina & Chlorella 400 Easy to Swallow Tablets - Natural Vitamins & Minerals - Broken Cell Wall Pure 2000mg Daily Dose Supplement by Inner Vitality**Inner Vitality**£8.10**528 rev1y ago](https://www.amazon.co.uk/dp/B0DYJH4T5D) [**Spirulina & Chlorella Tablets | 5000mg per Serving | 300 Tablets | Organic | Immune Support & Natural Detox | MySuperfoods**MySuperfoods**£9.16**40 rev1y ago](https://www.amazon.co.uk/dp/B0DPMV8XTR) [**Organic Chlorella and Spirulina Tablets 50/50 Superfood Blend - 300 Count 150g High in Vitamin B12 Iron and Chlorophyll by TheHealthyTree Company**TheHealthyTree Company**£7.04**2 rev1y ago](https://www.amazon.co.uk/dp/B0DC73D5QB) [**Organic Chlorella and Spirulina - 2500mg - 300 Tablets - Broken Cell Wall - Pure Formula Supplement with No Additives**SS Sport Supplies**£9.11**442 rev1y ago](https://www.amazon.co.uk/dp/B0DMPCTX3D) [**Organic Spirulina and Chlorella Capsules - 80 Days Supply - 240 Capsules - Soil Association Certified - Nutrient-Rich Algae Superfoods - Chlorella and Spirulina Herbal Supplements with No Additives**WeightWorld**£11.56**2,393 rev5y ago](https://www.amazon.co.uk/dp/B091L12RBL)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**Organic Chlorella and Spirulina Tablets 50/50 Superfood Blend - 300 Count 150g High in Vitamin B12 Iron and Chlorophyll by TheHealthyTree Company**TheHealthyTree Company**£7.04**5.0★**▲ 274%**](https://www.amazon.co.uk/dp/B0DC73D5QB) [**Organic Spirulina & Chlorella 400 Easy to Swallow Tablets - Natural Vitamins & Minerals - Broken Cell Wall Pure 2000mg Daily Dose Supplement by Inner Vitality**Inner Vitality**£8.10**4.6★**▲ 30%**](https://www.amazon.co.uk/dp/B0DYJH4T5D) [**Organic Spirulina & Chlorella 2000mg - 300 Tablets - Broken Cell Wall - Cold Pressed Pure Supplement with No Additives (75 Day Supply) by Alpha01**ALPHA01**£7.25**4.6★**▲ 16%**](https://www.amazon.co.uk/dp/B09153XCCN) [**Vegavero Organic Spirulina and Chlorella Capsules High Strength | 2000 mg Per Serving | 240 Capsules | NO Additives | Pure Powder | Vegan**Vegavero**£16.26**4.5★**— 2%**](https://www.amazon.co.uk/dp/B06Y3Q6XNX) [**Organic Spirulina and Chlorella Capsules - 80 Days Supply - 240 Capsules - Soil Association Certified - Nutrient-Rich Algae Superfoods - Chlorella and Spirulina Herbal Supplements with No Additives**WeightWorld**£11.56**4.6★**— 3%**](https://www.amazon.co.uk/dp/B091L12RBL)
**~~View all trending →~~**
## **What buyers say about spirulina and chlorella capsules**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Quality-Overall**31%
*“They are good quality easy to take”*
**Vegan/Organic**8%
*“We are vegan or plant based”*
**Ease Of Use**8%
*“Easy to take”*
**Ease Of Chewing/Swallowing**7%
*“I find this organic Spirulina & Chlorella easy to take and swallow, and of high quality”*
**Value For Money**7%
*“Real honest product offering great value”*
**Advertised Vs Actual Product**6%
*“does the job”*
**Efficiency**5%
*“Effective”*
**Vitamin**4%
*“Good supplement”*
**Detoxification**3%
*“Accelerate removal of toxins after a CT scan”*
**Regulates Digestion**3%
*“Helpful in aiding my digestion”*
### **What buyers complain about **
**Side Effects**25%
*“Experienced unpleasant side effect”*
**Quality-Overall**10%
*“Ordinary”*
**Regulates Digestion**10%
*“I used to have some digestive problems”*
**Dosage**8%
*“My only concern is the dosage at 5 capsules daily”*
**Vitamin**5%
*“It started to regrow within maybe a week of taking the supplement”*
**Acid Regulator/Stomach Ache Relief**5%
*“And still after just one tablet I got this crazy diarrhea as if I have a stomach flu”*
**Natural Resource Wastage**5%
*“Waste of money”*
**Functionality-Overall**5%
*“Not seen any results”*
**Advertised Vs Actual Product**5%
*“.Seems like a good product other than bad advertising”*
**Ease Of Use**3%
*“I found them a bit difficult to take to start with as they are a bit green and chalky and you need to take four,”*
## **Common questions**
- **Is spirulina and chlorella capsules profitable to sell on Amazon United Kingdom?**
- The niche generates £51K/yr across 9 tracked products. 90-day search growth is -7.6%. Flapen's verdict: Skip it (36/100).
- **How competitive is the spirulina and chlorella capsules niche?**
- 9 brands and 10 sellers compete. The top 5 products take 89% of clicks and top 5 brands hold 89% of demand.
- **What do buyers complain about in spirulina and chlorella capsules?**
- Top complaints mined from reviews: Side Effects, Quality-Overall, Regulates Digestion. The return rate is 0.1%.
- **When does demand for spirulina and chlorella capsules peak?**
- Demand peaks in Aug–Sep; the busiest month runs 2.1× the quietest.
- **What does it cost to enter the spirulina and chlorella capsules niche?**
- Listings span £6.53–£16.26; the average listing price is £10.03 (sweet spot $15–$100). The average incumbent carries 838 reviews — the moat a new listing must climb.
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