spirulina and chlorella capsules
Skip itA concentrated shelf (top 5 take 89% of clicks) — this niche doesn't clear our bar today.
Returns
Incredible0.1%return rate — above 5% kills the launch gate
Conversion
Great11.8%search→purchase rate — share of searches ending in a sale
Review moat
Good838.33avg incumbent reviews — the moat a new listing must climb
Avg price
Okay£10.03avg listing price — sweet spot $15–$100
Brand share
Okay89%top-5 brand share — brands hold most of the demand
Quality gap
Bad4.6★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–£16.26cheapest to priciest tracked listing — scored on the share inside $15–$100
Competition
Bad89%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
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.Peak months: Aug, Sep · busiest ÷ quietest = 2.1×
Top spirulina and chlorella capsules search terms
- spirulina and chlorella capsules19K/yr
- chlorella and spirulina15K/yr
- spirulina and chlorella5K/yr
- organic burst2K/yr
- chlorella and spirulina tablets2K/yr
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.
All 9 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
Organic Spirulina & Chlorella 2000mg - 300 Tablets - Broken Cell Wall - Cold Pressed Pure Supplement with No Additives (75 Day Supply) by Alpha01
ALPHA01£7.254.6★1,208 rev
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£11.564.6★2,393 rev
Organic Chlorella and Spirulina - 2500mg - 300 Tablets - Broken Cell Wall - Pure Formula Supplement with No Additives
SS Sport Supplies£9.114.6★442 rev
Organic Spirulina & Chlorella 400 Easy to Swallow Tablets - Natural Vitamins & Minerals - Broken Cell Wall Pure 2000mg Daily Dose Supplement by Inner Vitality
Inner Vitality£8.104.6★528 rev
Spirulina & Chlorella Tablets | 5000mg per Serving | 300 Tablets | Organic | Immune Support & Natural Detox | MySuperfoods
MySuperfoods£9.164.6★40 rev
Newest
by launch dateOrganic Spirulina & Chlorella 400 Easy to Swallow Tablets - Natural Vitamins & Minerals - Broken Cell Wall Pure 2000mg Daily Dose Supplement by Inner Vitality
Inner Vitality£8.10528 rev
Spirulina & Chlorella Tablets | 5000mg per Serving | 300 Tablets | Organic | Immune Support & Natural Detox | MySuperfoods
MySuperfoods£9.1640 rev
Organic Chlorella and Spirulina Tablets 50/50 Superfood Blend - 300 Count 150g High in Vitamin B12 Iron and Chlorophyll by TheHealthyTree Company
TheHealthyTree Company£7.042 rev
Organic Chlorella and Spirulina - 2500mg - 300 Tablets - Broken Cell Wall - Pure Formula Supplement with No Additives
SS Sport Supplies£9.11442 rev
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£11.562,393 rev
Trending
90-day click momentumOrganic Chlorella and Spirulina Tablets 50/50 Superfood Blend - 300 Count 150g High in Vitamin B12 Iron and Chlorophyll by TheHealthyTree Company
TheHealthyTree Company£7.045.0★
Organic Spirulina & Chlorella 400 Easy to Swallow Tablets - Natural Vitamins & Minerals - Broken Cell Wall Pure 2000mg Daily Dose Supplement by Inner Vitality
Inner Vitality£8.104.6★
Organic Spirulina & Chlorella 2000mg - 300 Tablets - Broken Cell Wall - Cold Pressed Pure Supplement with No Additives (75 Day Supply) by Alpha01
ALPHA01£7.254.6★
Vegavero Organic Spirulina and Chlorella Capsules High Strength | 2000 mg Per Serving | 240 Capsules | NO Additives | Pure Powder | Vegan
Vegavero£16.264.5★
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£11.564.6★
What buyers say about spirulina and chlorella capsules
What buyers praise and complain about, mined from review topics.What buyers love
“They are good quality easy to take”
“We are vegan or plant based”
“Easy to take”
“I find this organic Spirulina & Chlorella easy to take and swallow, and of high quality”
“Real honest product offering great value”
“does the job”
“Effective”
“Good supplement”
“Accelerate removal of toxins after a CT scan”
“Helpful in aiding my digestion”
What buyers complain about
“Experienced unpleasant side effect”
“Ordinary”
“I used to have some digestive problems”
“My only concern is the dosage at 5 capsules daily”
“It started to regrow within maybe a week of taking the supplement”
“And still after just one tablet I got this crazy diarrhea as if I have a stomach flu”
“Waste of money”
“Not seen any results”
“.Seems like a good product other than bad advertising”
“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.