---
title: "Streptococcus Salivarius K12 — $236K/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/health-household/streptococcus-salivarius-k12"
last_updated: "2026-08-10T22:35:59.614Z"
locale: en
meta:
description: "Niche score 52/100 · $236K/yr market · 128K searches/yr. A concentrated shelf (top 5 take 76% of clicks) keeps it on the watch list. Data updated Jul 2026."
"og:description": "Niche score 52/100 · $236K/yr market · 128K searches/yr. A concentrated shelf (top 5 take 76% of clicks) keeps it on the watch list. Data updated Jul 2026."
"og:title": "Streptococcus Salivarius K12 — $236K/yr Amazon US Niche (2026) - Flapen"
---
# **streptococcus salivarius k12**
**Worth a look**
Shows low returns (0.0%), but a concentrated shelf (top 5 take 76% of clicks) keeps it on the watch list.
Market size 44Growth 21Conversion 76Competition 20Returns 100Price range 86Avg price 95Brand share 24Review moat 43Quality gap 78
**Returns**
**Incredible****0.0%**
return rate — above 5% kills the launch gate
**Avg price**
**Incredible****$25.13**
avg listing price — sweet spot $15–$100
**Price range**
**Great****$10.00–$54.11**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Quality gap**
**Great****4.3★**
avg incumbent rating — lower means beatable quality
**Conversion**
**Great****7.3%**
search→purchase rate — share of searches ending in a sale
**Market size**
**Okay****$236K**
$236K/yr · 128K searches
**Review moat**
**Okay****2,164.21**
avg incumbent reviews — the moat a new listing must climb
**Brand share**
**Bad****90%**
top-5 brand share — brand-locked demand
**Growth**
**Bad****-8.6%**
90-day search growth — must beat 0% to launch
**Competition**
**Bad****76%**
top-5 click share — a locked-up shelf
According to Flapen's Amazon United States niche tracking, streptococcus salivarius k12 is a $236K/yr Amazon United States market (128K searches/yr). The top 5 brands hold 90% of demand. Demand peaks in May–Dec. Verdict: Worth a look — 52/100.
Data updated Jul 25, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **streptococcus salivarius k12 market data**
- **Units sold / yr**
- **8K–10K**
- avg 250–500/product
- **Revenue / yr**
- **$201K–$251K**
- units × avg price
- **Conversion rate**
- **7.3%**
- **Avg BSR**
- **#1,156**
- **Page quality**
- **0%**
- **Prime**
- **100%**
- **Sponsored**
- **93%**
- **Out of stock**
- **1.2%**
- **Avg brand age**
- **70 months**
- **Avg seller age**
- **156 days**
## **Competition & brand share**
The top 5 products capture 76% of clicks — a locked-up shelf that new listings rarely crack.
**Brands**
**10 **—flat
**Sellers**
**29**
**Top-5 brand share**
**90%**
Top 20: 100%
**Top-5 click share**
**76%**
Top 20: 100%
**Open market**
**7%**
- NOW Foods36% - BLIS24% - Hyperbiotics21% - Great Oral Health5% - BioGaia4% - Natures Craft2% - Open — no brand owns it (4 brands, 7%)
## **Demand & seasonality**
Weekly Amazon search volume, last 104 weeks — -8.6% search growth over the last 90 days.
5K3KSpike '24Spike '25Holiday '25Spike '26 seasonSepDecMarJunAugNovMarMay
Peak months: May, Dec · busiest ÷ quietest = 1.9×
[**Open Trend **](https://flapen.com/research/us/health-household/streptococcus-salivarius-k12/trend)
## **Top streptococcus salivarius k12 search terms**
- **blis**27K/yr+3.7%0.5% conv. - **streptococcus salivarius k12**16K/yr-8.7%3.6% conv. - **blis k12 probiotic lozenges**16K/yr-27.8%4.1% conv. - **hyperbiotics pro dental**13K/yr-20.7%5.1% conv. - **blis k12**14K/yr-2.1%6.2% conv. - **now oralbiotic**9K/yr-36.1%18.7% conv. - **oralbiotic**6K/yr+18.8%14.0% conv. - **oral biotic**5K/yr+20.1%11.0% conv. - **hyperbiotics pro-dental**3K/yr+14.8%6.7% conv. - **k12 probiotic**4K/yr-23.5%4.0% conv. [**All search terms **](https://flapen.com/research/us/health-household/streptococcus-salivarius-k12/search-terms)
## **Top streptococcus salivarius k12 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%$24K20%$47K30%$71K40%$94K1001K10K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 14 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**NOW Foods Supplements OralBiotic Developed for Adults & Children Strain Verified 60 Lozenges**NOW Foods**$15.11**4.2★2,586 rev](https://www.amazon.com/dp/B003P7YVTQ) [2**BLIS Throat Health Oral Probiotics K12 Immune Support 60 Vanilla Lozenges**BLIS**$33.34**4.4★154 rev](https://www.amazon.com/dp/B0CVGR1FF9) [3**Hyperbiotics Vital Nutrients Pro Dental Probiotic | Clinically Studied BLIS K12 and M18 | Oral Probiotics for Bad Breath Treatment for Adults | Oral Health for Teeth and Gums | 45 Mint Tablets**Hyperbiotics**$30.14**4.0★6,567 rev](https://www.amazon.com/dp/B00ONB9JIG) [4**Hyperbiotics Vital Nutrients Pro Dental Probiotic | Clinically Studied BLIS K12 and M18 | Oral Probiotics for Bad Breath Treatment for Adults | Oral Health for Teeth and Gums | 90 Mint Tablets**Hyperbiotics**$54.11**4.0★6,567 rev](https://www.amazon.com/dp/B018PZ641K) [5**Oral Probiotics for Mouth Bad Breath Treatment for Adults; Dentist Formulated Dental Probiotics for Teeth and Gums Health & Chronic Halitosis with BLIS K12 M18 60 Chewable Oral Health Tablets Mint**Great Oral Health**$27.82**4.2★6,012 rev](https://www.amazon.com/dp/B00KDQW1XU)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**Oral Probiotics for Teeth and Gums - Minty Fresh BLIS K12 Oral Probiotics for Mouth Bad Breath Dry Mouth and Dental Health Support with 3 Billion CFU - Chewable Xylitol Lozenges Mint Flavor (60 Count)**Natures Craft**$19.61**101 rev1y ago](https://www.amazon.com/dp/B0DLKXSMD1) [**Lactobacillus Salivarius Probiotic 240 Tablets (4 Month Supply) Researched Strain LS97 3 Billion CFU Digestive & Oral Health Support GMP Certified (240 Lactobacillus Salivarius)**Natural Foundation Supplements**$10.00**963 rev2y ago](https://www.amazon.com/dp/B0CWVLQXSJ) [**BLIS Throat Health Oral Probiotics K12 Immune Support 60 Vanilla Lozenges**BLIS**$33.34**154 rev2y ago](https://www.amazon.com/dp/B0CVGR1FF9) [**BioNaze Oral Probiotic BLIS K12 & BL-04 for Sinus Tonsil Stones Bad Breath Post Nasal Drip Throat Mouth Teeth & Gut - Improve Oral & Respiratory Health. Clinically Proven Probiotic Strains 30 ct**Bionaze**$21.99**2,496 rev7y ago](https://www.amazon.com/dp/B07K82PB58) [**BioGaia Prodentis | Oral Probiotics | Promotes Healthy Gums & Teeth | Defends Against Bad Breath & Dental Problems | Improves Oral Health | Mint Flavored | 30 Dental Probiotic Lozenges**BioGaia**$19.63**2,371 rev7y ago](https://www.amazon.com/dp/B07JC27112)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**BioGaia Prodentis | Oral Probiotics | Promotes Healthy Gums & Teeth | Defends Against Bad Breath & Dental Problems | Improves Oral Health | Mint Flavored | 30 Dental Probiotic Lozenges**BioGaia**$19.63**4.4★**▲ 98%**](https://www.amazon.com/dp/B07JC27112) [**NOW Foods Supplements OralBiotic Developed for Adults & Children Strain Verified 60 Lozenges**NOW Foods**$15.11**4.2★**▲ 49%**](https://www.amazon.com/dp/B003P7YVTQ) [**Hyperbiotics Vital Nutrients Pro Dental Probiotic | Clinically Studied BLIS K12 and M18 | Oral Probiotics for Bad Breath Treatment for Adults | Oral Health for Teeth and Gums | 45 Mint Tablets**Hyperbiotics**$30.14**4.0★**▲ 13%**](https://www.amazon.com/dp/B00ONB9JIG) [**BLIS Throat Health Oral Probiotics K12 Immune Support 60 Vanilla Lozenges**BLIS**$33.34**4.4★**▼ 11%**](https://www.amazon.com/dp/B0CVGR1FF9) [**NOW Foods - Oralbiotic Blis K12(R) 60 LOZ (Pack of 3)**NOW Foods**$37.85**4.4★**▼ 12%**](https://www.amazon.com/dp/B005DIBAPI)
**~~View all trending →~~**
## **What buyers say about streptococcus salivarius k12**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Oral Hygiene**18%
*“Great For My Gums”*
**Taste-Overall**9%
*“Great taste”*
**Quality-Overall**8%
*“Excellent product”*
**Efficiency**8%
*“Effective”*
**Breathability**7%
*“My breath feels fresher”*
**Value For Money**5%
*“Great value”*
**Advertised Vs Actual Product**4%
*“As Advertised”*
**Regulates Digestion**4%
*“Very effective and Does a great job in improving digestion, breath and dental health”*
**Flavor**2%
*“Both flavors are good”*
**Tooth Brightening**2%
*“Great for after brushing teeth routine”*
### **What buyers complain about **
**Functionality-Overall**13%
*“Did not work”*
**Taste-Overall**11%
*“Little drops taste a little minty”*
**Value For Money**11%
*“Overpriced”*
**Moist/Dry**4%
*“my mouth was so dry”*
**Solubility**3%
*“They did not dissolve”*
**Oral Hygiene**3%
*“My dental hygienist had to hunt for plaque on my teeth”*
**Pain Relief-Overall**3%
*“Made my gums hurt”*
**Quality-Overall**2%
*“Garbage”*
**Allergies**2%
*“It almost felt allergic”*
**Ease Of Chewing/Swallowing**2%
*“A little nasty to chew”*
### **Top return reasons **
**Value For Money**50%
**Water Resistance**25%
**Advertised Vs Actual Product**25%
## **Common questions**
- **Is streptococcus salivarius k12 profitable to sell on Amazon United States?**
- The niche generates $236K/yr across 14 tracked products. 90-day search growth is -8.6%. Flapen's verdict: Worth a look (52/100).
- **How competitive is the streptococcus salivarius k12 niche?**
- 10 brands and 29 sellers compete. The top 5 products take 76% of clicks and top 5 brands hold 90% of demand.
- **What do buyers complain about in streptococcus salivarius k12?**
- Top complaints mined from reviews: Functionality-Overall, Taste-Overall, Value For Money. The return rate is 0.0%.
- **When does demand for streptococcus salivarius k12 peak?**
- Demand peaks in May–Dec; the busiest month runs 1.9× the quietest.
- **What does it cost to enter the streptococcus salivarius k12 niche?**
- Listings span $10.00–$54.11; the average listing price is $25.13 (sweet spot $15–$100). The average incumbent carries 2,164 reviews — the moat a new listing must climb.
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