---
title: "Bacillus Subtilis — $195K/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/health-household/bacillus-subtilis"
last_updated: "2026-08-09T15:07:32.864Z"
locale: en
meta:
description: "Niche score 47/100 · $195K/yr market · 97K searches/yr · $26.51 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:description": "Niche score 47/100 · $195K/yr market · 97K searches/yr · $26.51 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:title": "Bacillus Subtilis — $195K/yr Amazon US Niche (2026) - Flapen"
---
# **bacillus subtilis**
**Skip it**
A concentrated shelf (top 5 take 88% of clicks) — this niche doesn't clear our bar today.
Market size 39Growth 24Conversion 77Competition 10Returns 100Price range 92Avg price 95Brand share 12Review moat 67Quality gap 47
**Returns**
**Incredible****0.0%**
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**
**Great****7.6%**
search→purchase rate — share of searches ending in a sale
**Review moat**
**Good****816.89**
avg incumbent reviews — the moat a new listing must climb
**Quality gap**
**Okay****4.5★**
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**
**Bad****95%**
top-5 brand share — brand-locked demand
**Competition**
**Bad****88%**
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 ~~](https://flapen.com/research/methodology)
## **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**
**11**
**Top-5 brand share**
**95%**
Top 20: 100%
**Top-5 click share**
**88%**
Top 20: 100%
**Open market**
**2%**
- 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.
3K2KSpike '24Spike '25 seasonDecMarJunAugNovMarMay
Peak months: May · busiest ÷ quietest = 1.7×
[**Open Trend **](https://flapen.com/research/us/health-household/bacillus-subtilis/trend)
## **Top bacillus subtilis search terms**
- **bacillus subtilis**54K/yr+3.1%4.6% conv. - **bacillus subtilis probiotic**16K/yr+5.2%5.5% conv. - **hu58**10K/yr-7.0%14.7% conv. - **bacillus subtilis hu58**5K/yr-3.0%6.2% conv. - **hu58 probiotic**2K/yr+15.3%12.8% conv. - **hu58 microbiome labs**4K/yr-20.0%19.2% conv. - **b subtilis probiotic**3K/yr-13.8%6.4% conv. - **ab22 probiotic bacillus subtilis**3K/yr-47.9%2.0% conv. [**All search terms **](https://flapen.com/research/us/health-household/bacillus-subtilis/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.
0%15%$29K30%$59K45%$88K60%$117K101001K10K 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**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**$47.07**4.7★410 rev](https://www.amazon.com/dp/B087N2NPM9) [2**Supersmart - Bacillus Subtilis 3 Billion CFU per Day (High Potency) - Spore Probiotic Supplement | Non-GMO & Gluten Free - 60 DR Capsules**Supersmart**$16.22**4.5★1,157 rev](https://www.amazon.com/dp/B01G7DKJGS) [3**Vitamatic Bacillus Subtilis 10 Billion per DR Capsule - 60 Count - Digestive Gut & Immune Health Support - Made with Prebiotic Inulin Fiber**Vitamatic**$14.76**4.5★333 rev](https://www.amazon.com/dp/B0CTGNBJ15) [4**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**$17.89**4.6★34 rev](https://www.amazon.com/dp/B0GSW5TWQZ) [5**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**$63.55**4.6★3,643 rev](https://www.amazon.com/dp/B07TJ4TH8Q)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**Nutricost Bacillus Subtilis (10 Billion CFU) 60 Capsules Vegan GMO-Free**Nutricost**$13.40**21 rev2mo ago](https://www.amazon.com/dp/B0H132J7Q8) [**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**$17.89**34 rev2mo ago](https://www.amazon.com/dp/B0GSW5TWQZ) [**Vitamatic Bacillus Subtilis 10 Billion per DR Capsule - 60 Count - Digestive Gut & Immune Health Support - Made with Prebiotic Inulin Fiber**Vitamatic**$14.76**333 rev2y ago](https://www.amazon.com/dp/B0CTGNBJ15) [**Vitamatic Bacillus Subtilis Pure Powder Probiotic Powder - Gut Health - 100 Gram - 100 Servings**Vitamatic**$28.98**99 rev2y ago](https://www.amazon.com/dp/B0CPJNJ9T5) [**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**$47.07**410 rev6y ago](https://www.amazon.com/dp/B087N2NPM9)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**Nutricost Bacillus Subtilis (10 Billion CFU) 60 Capsules Vegan GMO-Free**Nutricost**$13.40**4.6★**▲ 294%**](https://www.amazon.com/dp/B0H132J7Q8) [**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**$17.89**4.6★**▲ 294%**](https://www.amazon.com/dp/B0GSW5TWQZ) [**Supersmart - Bacillus Subtilis 3 Billion CFU per Day (High Potency) - Spore Probiotic Supplement | Non-GMO & Gluten Free - 60 DR Capsules**Supersmart**$16.22**4.5★**— 2%**](https://www.amazon.com/dp/B01G7DKJGS) [**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**$47.07**4.7★**— 7%**](https://www.amazon.com/dp/B087N2NPM9) [**Vitamatic Bacillus Subtilis 10 Billion per DR Capsule - 60 Count - Digestive Gut & Immune Health Support - Made with Prebiotic Inulin Fiber**Vitamatic**$14.76**4.5★**— 9%**](https://www.amazon.com/dp/B0CTGNBJ15)
**~~View all trending →~~**
## **What buyers say about bacillus subtilis**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Nutritional Content**18%
*“Great Probiotic”*
**Quality-Overall**14%
*“the quality is consistent with what I've come to expect from Nutricost products”*
**Regulates Digestion**11%
*“and smoother overall digestion”*
**Value For Money**6%
*“The price per bottle is reasonable”*
**Ease Of Chewing/Swallowing**5%
*“They are not too large or difficult to swallow”*
**Vitamin**4%
*“that it can help with B-vitamin absorption”*
**Ease Of Use**3%
*“which makes it convenient for regular use”*
**Acid Regulator/Stomach Ache Relief**3%
*“it survives the harsh stomach environment”*
**Dosage**3%
*“provides 60 servings for consistent daily use for 60 days”*
**Side Effects**3%
*“No side effects”*
### **What buyers complain about **
**Value For Money**11%
*“Very expensive and I'm not sure it does anything”*
**Functionality-Overall**11%
*“Didn't work for me”*
**Nutritional Content**8%
*“Not your average probiotic”*
**Contamination**8%
*“Contaminated batch”*
**Taste-Overall**6%
*“Hands this was the worst probiotic she ever tasted”*
**Quality-Overall**3%
*“In a supplement category crowded with questionable quality control”*
**Regulates Digestion**3%
*“Causes bowel issues”*
**Fever Relief**3%
*“This product made me feel sick”*
**Dosage**2%
*“If you have decided this doesnt work after a couple doses”*
**Acid Regulator/Stomach Ache Relief**2%
*“My stomach continues to feel the same”*
### **Top return reasons **
**Taste-Overall**50%
**Hard Feel**50%
## **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.
## **Related niches in Health & Household**
- 76 [**cedar oil**](https://flapen.com/research/us/health-household/cedar-oil)$1.2M/yr+214.4%**Launch it**- 77 [**nutrapure glp1 cutting mix**](https://flapen.com/research/us/health-household/nutrapure-glp1-cutting-mix)$149K/yr+940.2%**Worth a look**- 77 [**dexcom g7**](https://flapen.com/research/us/health-household/dexcom-g7)$2.0M/yr+39.9%**Launch it**- 77 [**purelia**](https://flapen.com/research/us/health-household/purelia)$635K/yr+359.7%**Worth a look**- 77 [**graduation napkins**](https://flapen.com/research/us/health-household/graduation-napkins)$302K/yr+385.7%**Worth a look**- 77 [**credit card wand**](https://flapen.com/research/us/health-household/credit-card-wand)$418K/yr+101.3%**Worth a look**[**All Health & Household niches **](https://flapen.com/research/us/health-household)