K12
FailThe top 5 brands take 100% of clicks, so K12 is a Fail.
- Flapen Score
- 47 / 100Ranks 8,381 of 14,768 Health & Household niches · −2 vs the category median of 4947
- Market size
- $130K/yr41K searches / yr
- 90-day growth
- -5.8%search demand this quarter
- Competition
- 92%top-5 click share · 5 brands · 24 sellers
Flapen Score
K12 against its category
The dotted line is the Health & Household average. Past it, K12 is stronger. Inside it, weaker.
Market
The K12 market on Amazon at a glance
Shoppers on Amazon United States searched for K12 41K times last year and spent an estimated $130K. All 5 brands take every click. Demand peaks in Dec. Flapen scores it 47 out of 100, a Fail.
01 · Demand
An estimated 12.6% of those searches ended in a purchase.
Shoppers searched for this 41K times in the last 12 months. That counts every search on Amazon United States for this niche's terms. An estimated 12.6% of those searches ended in a purchase. Searches in the last 90 days moved -5.8% against the 90 days before. Searches, conversion and average price together put the market at an estimated $130K a year.
- Searches, last 12 months
- 41K
- Growth, 90 days vs prior 90
- -5.8%
- Conversion, latest week
- 12.6%
- Market size, estimated
- $130Ka year
- Peak month
- December1.6× the quietest month
- Top search term
- blis k1214K searches a year
02 · Price
A sale here is worth $25.60.
Listings sell for $25.60 on average, from $15.11 to $37.85. Amazon reports units sold in ranges. This niche sold 4K to 5K a year. The average listing sells 250 to 500 of them. At $25.60 that is $6K to $13K a year per listing.
- Average price
- $25.60inside the $15 to $100 sweet spot
- Price range
- $15.11–$37.85
- Amazon United States median price
- $24.38across 115,062 niches
- Units sold a year
- 4K–5K
- Units per listing a year
- 250–500
- Revenue per listing a year
- $6K–$13K
- Returns
- 0.0%of orders · Amazon United States median 2.1%
03 · Entry bar
The bar here is reviews.
86% of listings pay for placement with sponsored ads. 100% ship with Prime. On an average day, 0.0% of listings are out of stock. The average listing ranks #1,223 within Digestive Supplements. It carries 2,596 reviews at 4.30 stars, so a new listing needs social proof before a better product.
- Sponsored listings
- 86%
- Prime listings
- 100%
- Out of stock, average day
- 0.0%
- Average rank
- #1,223in Digestive Supplements
- Average rating
- 4.30 starsAmazon United States average 4.42 stars
- Average reviews
- 2,596per listing
- Listings tracked
- 7
04 · Newcomers
Brands here are established.
The brands on the shelf have sold for 72 months on average, so the names here are established.
- Launched, last 12 months
- 0
- Successful launches
- 0Amazon's first-year sales bar
- Average brand age
- 72 months
Products
Top K12 products & what they sell for
The products selling here, as shoppers see them on Amazon. Shelf share and sales are our estimates.
Prices and ratings read from Amazon on Jul 25, 2026. The live listing can differ.
Top sellers
by estimated 90-day click share
NOW Foods Supplements OralBiotic Developed for Adults & Children Strain Verified 60 Lozenges
- Price
- $15.11
- Rating
- 4.2/5
- Reviews
- 2,586
- Age
- 16y ago

BLIS Throat Health Oral Probiotics K12 Immune Support 60 Vanilla Lozenges
- Price
- $33.34
- Rating
- 4.4/5
- Reviews
- 154
- Age
- 2y ago

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
- Price
- $30.14
- Rating
- 4.0/5
- Reviews
- 6,567
- Age
- 11y ago

NOW Foods - Oralbiotic Blis K12(R) 60 LOZ (Pack of 3)
- Price
- $37.85
- Rating
- 4.4/5
- Reviews
- 197
- Age
- 15y ago

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
- Price
- $27.82
- Rating
- 4.2/5
- Reviews
- 6,012
- Age
- 12y ago
Trending
estimated 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
- Price
- $19.63
- Rating
- 4.4/5
- Reviews
- 2,371
- Age
- 7y ago

NOW Foods Supplements OralBiotic Developed for Adults & Children Strain Verified 60 Lozenges
- Price
- $15.11
- Rating
- 4.2/5
- Reviews
- 2,586
- Age
- 16y ago

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
- Price
- $27.82
- Rating
- 4.2/5
- Reviews
- 6,012
- Age
- 12y ago

BLIS Throat Health Oral Probiotics K12 Immune Support 60 Vanilla Lozenges
- Price
- $33.34
- Rating
- 4.4/5
- Reviews
- 154
- Age
- 2y ago

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
- Price
- $30.14
- Rating
- 4.0/5
- Reviews
- 6,567
- Age
- 11y ago
Newest
by launch date
BLIS Throat Health Oral Probiotics K12 Immune Support 60 Vanilla Lozenges
- Price
- $33.34
- Rating
- 4.4/5
- Reviews
- 154
- Age
- 2y ago

BioGaia Prodentis | Oral Probiotics | Promotes Healthy Gums & Teeth | Defends Against Bad Breath & Dental Problems | Improves Oral Health | Mint Flavored | 30 Dental Probiotic Lozenges
- Price
- $19.63
- Rating
- 4.4/5
- Reviews
- 2,371
- Age
- 7y ago

BLIS HoneyBLIS Oral Probiotics Manuka Honey K12 Throat Soothe 16 Lozenges
- Price
- $15.33
- Rating
- 4.5/5
- Reviews
- 286
- Age
- 8y ago

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
- Price
- $30.14
- Rating
- 4.0/5
- Reviews
- 6,567
- Age
- 11y ago

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
- Price
- $27.82
- Rating
- 4.2/5
- Reviews
- 6,012
- Age
- 12y ago
Competition
Competition: brands, sellers & click share
The top 5 products take an estimated 92% of clicks. A locked shelf that new listings rarely crack.
Brands
5 flat
Sellers
24
Est. top-5 brand share
100%
Top 20: 100%
Est. top-5 click share
92%
Top 20: 100%
Open market
0%
- NOW Foods66%
- BLIS19%
- Hyperbiotics5%
- Great Oral Health5%
- BioGaia5%
Demand
K12 search demand
Weekly searches over the year, seasonality beneath. Pick a range.
Peak months: Dec · busiest ÷ quietest = 1.6×
Search terms
Top K12 search terms shoppers use
The exact words shoppers type, with estimated yearly volume, growth, and conversion.
- blis k1214K/yr
- now oralbiotic9K/yr
- oralbiotic6K/yr
- oral biotic5K/yr
- k12 probiotic4K/yr
- blis k12 oral probiotic3K/yr
Reviews and returns
What reviews say buyers love and hate about K12
We read the reviews and the return reasons for every product selling here.
“Did not work”
Every topic
Every topic buyers talk about, one row each.
Red shows the share of negative reviews and green the share of positive reviews, biggest topic first. Open a row to read what they wrote.
18 topics
Keep looking
Related niches
Niches in the same category that score near this one. Research these next.
Best Flapen score
The highest-scoring niches we track right now, across every category.
FAQ
Common K12 questions
Answered from the same tracked data.
Figures on this page are estimates modeled from public Amazon pages and third-party keyword data. Amazon does not supply them, and no connected seller's data is used. How we handle Amazon data









