Is spirulina and chlorella capsules profitable to sell on Amazon United States?

The niche generates $674K/yr across 15 tracked products. 2 of 3 products launched in the last 360 days are still selling. 90-day search growth is +7.9%. Flapen's verdict: Worth a look (57/100).

How competitive is the spirulina and chlorella capsules niche?

12 brands and 42 sellers compete. The top 5 products take 67% of clicks and top 5 brands hold 79% of demand.

What do buyers complain about in spirulina and chlorella capsules?

Top complaints mined from reviews: Dosage, Acid Regulator/Stomach Ache Relief, Functionality-Overall. The return rate is 0.0%.

When does demand for spirulina and chlorella capsules peak?

Demand is steady year-round — the busiest month runs 1.7× the quietest.

What does it cost to enter the spirulina and chlorella capsules niche?

Listings span $11.15–$45.38; the average listing price is $24.87 (sweet spot $15–$100). The average incumbent carries 1,553 reviews — the moat a new listing must climb.

spirulina and chlorella capsules

Worth a look

Shows low returns (0.0%), but a failed launch gate (market size, growth, or returns) keeps it on the watch list.

Returns

Incredible0.0%

return rate — above 5% kills the launch gate

Avg price

Incredible$24.87

avg listing price — sweet spot $15–$100

Price range

Great$11.15–$45.38

cheapest to priciest tracked listing — scored on the share inside $15–$100

Conversion

Great8.3%

search→purchase rate — share of searches ending in a sale

Market size

Good$674K

$674K/yr · 326K searches

Review moat

Okay1,552.87

avg incumbent reviews — the moat a new listing must climb

Brand share

Okay79%

top-5 brand share — brands hold most of the demand

Growth

Okay+7.9%

90-day search growth — must beat 0% to launch

Competition

Okay67%

top-5 click share — leaders hold, buyers still browse

Quality gap

Okay4.6★

avg incumbent rating — lower means beatable quality

According to Flapen's Amazon United States niche tracking, spirulina and chlorella capsules is a $674K/yr Amazon United States market (326K searches/yr). The top 5 brands hold 79% of demand. Verdict: Worth a look — 57/100.

Data updated Jul 27, 2026 · scored weekly · How we score niches

spirulina and chlorella capsules market data

Units sold / yr: 25K–30K; avg 2,000–2,500/product
Revenue / yr: $622K–$746K; units × avg price
Conversion rate: 8.3%
Avg BSR: #36
Page quality: 0%
Prime: 100%
Sponsored: 87%
Out of stock: 2.4%
Avg brand age: 74 months
Avg seller age: 153 days

Competition & brand share

The top 5 products take 67% of clicks — established leaders, but buyers still shop beyond them.

Brands

12 rising

Sellers

Top-5 brand share

79%

Top 20: 100%

Top-5 click share

67%

Top 20: 100%

Open market

16%

Micro Ingredients49%
Sunlit Best Green Organics9%
Snap Supplements9%
HCL HERBAL CODE LABS6%
Carlyle5%
Sunfood Superfoods5%
Open — no brand owns it (6 brands, 16%)

Demand & seasonality

Weekly Amazon search volume, last 103 weeks — +7.9% search growth over the last 90 days.

No pronounced peak months · busiest ÷ quietest = 1.7×

Open Trend

Top spirulina and chlorella capsules search terms

spirulina chlorella79K/yr +5.3%6.3% conv.
chlorella spirulina tablets59K/yr +10.6%7.8% conv.
spirulina chlorella tablets35K/yr +64.0%7.9% conv.
spirulina and chlorella capsules49K/yr -8.0%7.1% conv.
spirulina and chlorella19K/yr +73.7%4.9% conv.
chlorella spirulina21K/yr -19.2%3.9% conv.
clorela y espirulina orgnica14K/yr -24.4%1.9% conv.
chorella/spirulina tablets organic14K/yr -23.0%5.4% conv.
organic chlorella spirulina tablets4K/yr -18.1%12.1% conv.
spirulina and chlorella tablets4K/yr +5.7%8.5% conv.

All 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.

Beatable (≤4.3★) Contested Strong incumbent (>4.7★)

All 15 tracked products in this niche — three views at once, no toggling.

Top sellers

by 90-day click share

Micro Ingredients Organic Spirulina Chlorella Tablets 720 Count | 4 Month Supply | 50/50 Algae Blend | Broken Cell Wall | Non-GMO Filler Free

Micro Ingredients$29.044.6★9,238 rev

Micro Ingredients Organic Spirulina Chlorella Mini Tablets 2 500 Tablets (8 Month Supply) | 50/50 Algae Blend | No Fillers Non-GMO

Micro Ingredients$26.724.7★478 rev

Chlorella Spirulina Powder Capsules 3000 mg of BMAA Free Purest Blue Green Algae - Best Natural Detox Raw Vegan Vitamins Protein Green Superfood - Made in USA

HCL HERBAL CODE LABS$23.174.7★2,336 rev

Snap Supplements USDA Organic Spirulina and Chlorella 120 Vegan Capsules

Snap Supplements$20.894.6★798 rev

Carlyle Organic Chlorella Spirulina Tablets | 1300 Count | 50/50 Blend

Carlyle$19.614.6★522 rev

Newest

by launch date

Good Natured Premium Spirulina and Chlorella Capsules 1 250 Tablets Non-GMO Vegan Chlorella Tablets Sunlight Grown Cracked Cell Wall High Protein Heavy Metal Detox

Good Natured$30.04701 rev

4mo ago

Nutricost Organic Spirulina + Chlorella (3 000mg) 180 Tablets - USDA Organic 1 500mg Spirulina 1 500mg Chlorella Vegan GMO-Free Gluten-Free 30 Servings

Nutricost$17.5422 rev

10mo ago

Sea Tox Organic Spirulina and Chlorella Capsules Natural Cleansing & Nourishment Sea Moss Bladderwrack Chlorophyll Burdock Root Ashwagandha Turmeric 90 Vegan Black Seed Oil Capsules By Clean Nutra

Clean Nutraceuticals$22.30146 rev

10mo ago

Snap Supplements Gut Health Supplement & Organic Spirulina Chlorella Bundle

Snap Supplements$39.75669 rev

1y ago

Micro Ingredients Organic Spirulina Chlorella Mini Tablets 2 500 Tablets (8 Month Supply) | 50/50 Algae Blend | No Fillers Non-GMO

Micro Ingredients$26.72478 rev

1y ago

What buyers say about spirulina and chlorella capsules

What buyers praise and complain about, mined from review topics.

What buyers love

Quality-Overall19%

“Great quality, clean ingredients”

Value For Money8%

“Worth the price”

Energy Level7%

“boost my energy”

Vitamin5%

“Fantastic supplement”

Efficiency5%

“Works great”

Ease Of Use5%

“These tablets are easy to take”

Nutritional Content4%

“Good supplements”

Vegan/Organic3%

“I loved that is organic”

Detoxification3%

“Great detox”

Advertised Vs Actual Product3%

“Excellent product, as advertised”

What buyers complain about

Dosage9%

“Too many pills to take”

Acid Regulator/Stomach Ache Relief7%

“Made me very sick to my stomach”

Functionality-Overall7%

“Didn't work”

Value For Money6%

“What is a disappointment is the amount of product for the cost”

Side Effects6%

“Made me very sick to my stomach”

Size-Overall6%

“And the tabs are small”

Smell5%

“dont smell as bonus”

Ease Of Chewing/Swallowing4%

“difficulty swallowing”

Advertised Vs Actual Product4%

“I still have mucus which it was advertised to clear up”

Allergies3%

“Adverse reaction”

Top return reasons

Contamination50%

Strength50%

Common questions

Is spirulina and chlorella capsules profitable to sell on Amazon United States?: The niche generates $674K/yr across 15 tracked products. 2 of 3 products launched in the last 360 days are still selling. 90-day search growth is +7.9%. Flapen's verdict: Worth a look (57/100).
How competitive is the spirulina and chlorella capsules niche?: 12 brands and 42 sellers compete. The top 5 products take 67% of clicks and top 5 brands hold 79% of demand.
What do buyers complain about in spirulina and chlorella capsules?: Top complaints mined from reviews: Dosage, Acid Regulator/Stomach Ache Relief, Functionality-Overall. The return rate is 0.0%.
When does demand for spirulina and chlorella capsules peak?: Demand is steady year-round — the busiest month runs 1.7× the quietest.
What does it cost to enter the spirulina and chlorella capsules niche?: Listings span $11.15–$45.38; the average listing price is $24.87 (sweet spot $15–$100). The average incumbent carries 1,553 reviews — the moat a new listing must climb.