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.

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.

Returns

Incredible0.0%

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

Great4.3★

avg incumbent rating — lower means beatable quality

Conversion

Great7.3%

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

Market size

Okay$236K

$236K/yr · 128K searches

Review moat

Okay2,164.21

avg incumbent reviews — the moat a new listing must climb

Brand share

Bad90%

top-5 brand share — brand-locked demand

Growth

Bad-8.6%

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

Competition

Bad76%

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

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

Top-5 brand share

90%

Top 20: 100%

Top-5 click share

76%

Top 20: 100%

Open market

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.

Peak months: May, Dec · busiest ÷ quietest = 1.9×

Open Trend

Top streptococcus salivarius k12 search terms

blis27K/yr +3.7%0.5% conv.
streptococcus salivarius k1216K/yr -8.7%3.6% conv.
blis k12 probiotic lozenges16K/yr -27.8%4.1% conv.
hyperbiotics pro dental13K/yr -20.7%5.1% conv.
blis k1214K/yr -2.1%6.2% conv.
now oralbiotic9K/yr -36.1%18.7% conv.
oralbiotic6K/yr +18.8%14.0% conv.
oral biotic5K/yr +20.1%11.0% conv.
hyperbiotics pro-dental3K/yr +14.8%6.7% conv.
k12 probiotic4K/yr -23.5%4.0% conv.

All 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.

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

NOW Foods Supplements OralBiotic Developed for Adults & Children Strain Verified 60 Lozenges

NOW Foods$15.114.2★2,586 rev

BLIS Throat Health Oral Probiotics K12 Immune Support 60 Vanilla Lozenges

BLIS$33.344.4★154 rev

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$30.144.0★6,567 rev

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$54.114.0★6,567 rev

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$27.824.2★6,012 rev

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$19.61101 rev

1y ago

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$10.00963 rev

2y ago

BLIS Throat Health Oral Probiotics K12 Immune Support 60 Vanilla Lozenges

BLIS$33.34154 rev

2y ago

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$21.992,496 rev

7y ago

BioGaia$19.632,371 rev

7y ago

What buyers say about streptococcus salivarius k12

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

What buyers love

Oral Hygiene18%

“Great For My Gums”

Taste-Overall9%

“Great taste”

Quality-Overall8%

“Excellent product”

Efficiency8%

“Effective”

Breathability7%

“My breath feels fresher”

Value For Money5%

“Great value”

Advertised Vs Actual Product4%

“As Advertised”

Regulates Digestion4%

“Very effective and Does a great job in improving digestion, breath and dental health”

Flavor2%

“Both flavors are good”

Tooth Brightening2%

“Great for after brushing teeth routine”

What buyers complain about

Functionality-Overall13%

“Did not work”

Taste-Overall11%

“Little drops taste a little minty”

Value For Money11%

“Overpriced”

Moist/Dry4%

“my mouth was so dry”

Solubility3%

“They did not dissolve”

Oral Hygiene3%

“My dental hygienist had to hunt for plaque on my teeth”

Pain Relief-Overall3%

“Made my gums hurt”

Quality-Overall2%

“Garbage”

Allergies2%

“It almost felt allergic”

Ease Of Chewing/Swallowing2%

“A little nasty to chew”

Top return reasons

Value For Money50%

Water Resistance25%

Advertised Vs Actual Product25%

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.