Is bacillus subtilis profitable to sell on Amazon United States?

The niche generates $195K/yr across 9 tracked products. 0 of 2 products launched in the last 360 days are still selling. 90-day search growth is -1.2%. Flapen's verdict: Skip it (47/100).

How competitive is the bacillus subtilis niche?

7 brands and 11 sellers compete. The top 5 products take 88% of clicks and top 5 brands hold 95% of demand.

What do buyers complain about in bacillus subtilis?

Top complaints mined from reviews: Value For Money, Functionality-Overall, Nutritional Content. The return rate is 0.0%.

When does demand for bacillus subtilis peak?

Demand peaks in May; the busiest month runs 1.7× the quietest.

What does it cost to enter the bacillus subtilis niche?

Listings span $13.40–$63.55; the average listing price is $26.51 (sweet spot $15–$100). The average incumbent carries 817 reviews — the moat a new listing must climb.

bacillus subtilis

Skip it

A concentrated shelf (top 5 take 88% of clicks) — this niche doesn't clear our bar today.

Returns

Incredible0.0%

return rate — above 5% kills the launch gate

Avg price

Incredible$26.51

avg listing price — sweet spot $15–$100

Price range

Great$13.40–$63.55

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

Conversion

Great7.6%

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

Review moat

Good816.89

avg incumbent reviews — the moat a new listing must climb

Quality gap

Okay4.5★

avg incumbent rating — lower means beatable quality

Market size

Okay$195K

$195K/yr · 97K searches

Growth

Bad-1.2%

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

Brand share

Bad95%

top-5 brand share — brand-locked demand

Competition

Bad88%

top-5 click share — a locked-up shelf

According to Flapen's Amazon United States niche tracking, bacillus subtilis is a $195K/yr Amazon United States market (97K searches/yr). The top 5 brands hold 95% of demand. Demand peaks in May. Verdict: Skip it — 47/100.

Data updated Jul 25, 2026 · scored weekly · How we score niches

bacillus subtilis market data

Units sold / yr: 8K–10K; avg 1,000–1,250/product
Revenue / yr: $212K–$265K; units × avg price
Conversion rate: 7.6%
Avg BSR: #929
Page quality: 0%
Prime: 100%
Sponsored: 89%
Out of stock: 5.8%
Avg brand age: 71 months
Avg seller age: 152 days

Competition & brand share

The top 5 products capture 88% of clicks — a locked-up shelf that new listings rarely crack.

Brands

7 rising

Sellers

Top-5 brand share

95%

Top 20: 100%

Top-5 click share

88%

Top 20: 100%

Open market

Microbiome Labs46%
Vitamatic20%
Supersmart17%
Toniiq8%
Nutricost4%
Revive Herbs3%
Open — no brand owns it (1 brand, 2%)

Demand & seasonality

Weekly Amazon search volume, last 99 weeks — -1.2% search growth over the last 90 days.

Peak months: May · busiest ÷ quietest = 1.7×

Open Trend

Top bacillus subtilis search terms

bacillus subtilis54K/yr +3.1%4.6% conv.
bacillus subtilis probiotic16K/yr +5.2%5.5% conv.
hu5810K/yr -7.0%14.7% conv.
bacillus subtilis hu585K/yr -3.0%6.2% conv.
hu58 probiotic2K/yr +15.3%12.8% conv.
hu58 microbiome labs4K/yr -20.0%19.2% conv.
b subtilis probiotic3K/yr -13.8%6.4% conv.
ab22 probiotic bacillus subtilis3K/yr -47.9%2.0% conv.

All search terms

Top bacillus subtilis 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 9 tracked products in this niche — three views at once, no toggling.

Top sellers

by 90-day click share

Microbiome Labs HU58 Bacillus Subtilis Probiotics for Women and Men - High Potency Spore Probiotic for Digestive Health & Immune Support - Daily Capsules with 10 Billion CFU (60 Capsules)

Microbiome Labs$47.074.7★410 rev

Supersmart - Bacillus Subtilis 3 Billion CFU per Day (High Potency) - Spore Probiotic Supplement | Non-GMO & Gluten Free - 60 DR Capsules

Supersmart$16.224.5★1,157 rev

Vitamatic Bacillus Subtilis 10 Billion per DR Capsule - 60 Count - Digestive Gut & Immune Health Support - Made with Prebiotic Inulin Fiber

Vitamatic$14.764.5★333 rev

Toniiq Bacillus Subtilis Probiotic Ultra High Potency 100 Billion CFU Single-Strain Formula with Prebiotic FOS Spore Probiotic Supplement Third-Party Tested 60 Capsules

Toniiq$17.894.6★34 rev

Microbiome Labs MegaSporeBiotic Probiotics for Women & Men - Spore-Based Probiotic for Gut Health & Digestive Support - Shelf-Stable Travel-Friendly Mens & Womens Probiotics (60 Capsules)

Microbiome Labs$63.554.6★3,643 rev

Newest

by launch date

Nutricost Bacillus Subtilis (10 Billion CFU) 60 Capsules Vegan GMO-Free

Nutricost$13.4021 rev

2mo ago

Toniiq Bacillus Subtilis Probiotic Ultra High Potency 100 Billion CFU Single-Strain Formula with Prebiotic FOS Spore Probiotic Supplement Third-Party Tested 60 Capsules

Toniiq$17.8934 rev

2mo ago

Vitamatic Bacillus Subtilis 10 Billion per DR Capsule - 60 Count - Digestive Gut & Immune Health Support - Made with Prebiotic Inulin Fiber

Vitamatic$14.76333 rev

2y ago

Vitamatic Bacillus Subtilis Pure Powder Probiotic Powder - Gut Health - 100 Gram - 100 Servings

Vitamatic$28.9899 rev

2y ago

Microbiome Labs HU58 Bacillus Subtilis Probiotics for Women and Men - High Potency Spore Probiotic for Digestive Health & Immune Support - Daily Capsules with 10 Billion CFU (60 Capsules)

Microbiome Labs$47.07410 rev

6y ago

What buyers say about bacillus subtilis

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

What buyers love

Nutritional Content18%

“Great Probiotic”

Quality-Overall14%

“the quality is consistent with what I've come to expect from Nutricost products”

Regulates Digestion11%

“and smoother overall digestion”

Value For Money6%

“The price per bottle is reasonable”

Ease Of Chewing/Swallowing5%

“They are not too large or difficult to swallow”

Vitamin4%

“that it can help with B-vitamin absorption”

Ease Of Use3%

“which makes it convenient for regular use”

Acid Regulator/Stomach Ache Relief3%

“it survives the harsh stomach environment”

Dosage3%

“provides 60 servings for consistent daily use for 60 days”

Side Effects3%

“No side effects”

What buyers complain about

Value For Money11%

“Very expensive and I'm not sure it does anything”

Functionality-Overall11%

“Didn't work for me”

Nutritional Content8%

“Not your average probiotic”

Contamination8%

“Contaminated batch”

Taste-Overall6%

“Hands this was the worst probiotic she ever tasted”

Quality-Overall3%

“In a supplement category crowded with questionable quality control”

Regulates Digestion3%

“Causes bowel issues”

Fever Relief3%

“This product made me feel sick”

Dosage2%

“If you have decided this doesnt work after a couple doses”

Acid Regulator/Stomach Ache Relief2%

“My stomach continues to feel the same”

Top return reasons

Taste-Overall50%

Hard Feel50%

Common questions

Is bacillus subtilis profitable to sell on Amazon United States?: The niche generates $195K/yr across 9 tracked products. 0 of 2 products launched in the last 360 days are still selling. 90-day search growth is -1.2%. Flapen's verdict: Skip it (47/100).
How competitive is the bacillus subtilis niche?: 7 brands and 11 sellers compete. The top 5 products take 88% of clicks and top 5 brands hold 95% of demand.
What do buyers complain about in bacillus subtilis?: Top complaints mined from reviews: Value For Money, Functionality-Overall, Nutritional Content. The return rate is 0.0%.
When does demand for bacillus subtilis peak?: Demand peaks in May; the busiest month runs 1.7× the quietest.
What does it cost to enter the bacillus subtilis niche?: Listings span $13.40–$63.55; the average listing price is $26.51 (sweet spot $15–$100). The average incumbent carries 817 reviews — the moat a new listing must climb.