---
title: "Lactobacillus — $14K/mo Amazon US Product Research (2026)"
canonical_url: "https://flapen.com/research/us/health-household/lactobacillus"
last_updated: "2026-08-12T14:51:36.166Z"
locale: en
meta:
description: "Amazon product research for lactobacillus: $14K/mo market, demand, competition, pricing, reviews & the verdict. Know if it's worth selling — Flapen."
"og:description": "Amazon product research for lactobacillus: $14K/mo market, demand, competition, pricing, reviews & the verdict. Know if it's worth selling — Flapen."
"og:title": "Lactobacillus — $14K/mo Amazon US Product Research (2026)"
---
# **Lactobacillus**
**Skip it**
A deep review moat (22,356 avg reviews) — this niche doesn't clear our bar today.
Market size 35Growth 22Conversion 78Competition 26Returns 100Price range 72Avg price 83Brand share 49Review moat 15Quality gap 24
**Returns**
**Incredible****0.0%**
return rate — above 5% kills the launch gate
**Avg price**
**Great****$18.14**
avg listing price — sweet spot $15–$100
**Conversion**
**Great****7.8%**
search→purchase rate — share of searches ending in a sale
**Price range**
**Good****$6.72–$35.98**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Brand share**
**Okay****76%**
top-5 brand share — brands hold most of the demand
**Market size**
**Okay****$169K**
$169K/yr · 119K searches
**Competition**
**Okay****69%**
top-5 click share — leaders hold, buyers still browse
**Quality gap**
**Bad****4.6★**
avg incumbent rating — lower means beatable quality
**Growth**
**Bad****-5.9%**
90-day search growth — must beat 0% to launch
**Review moat**
**Bad****22,356.33**
avg incumbent reviews — the moat a new listing must climb
## **Is lactobacillus profitable on Amazon?**
According to Flapen's Amazon United States niche tracking, lactobacillus is a $169K/yr Amazon United States market (119K searches/yr). The top 5 brands hold 76% of demand. Demand peaks in Aug–Sep–Oct. Verdict: Skip it — 46/100.
Data updated Jul 25, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **lactobacillus market size & sales**
Units sold, revenue, conversion and listing quality across the tracked shelf.
- **Units sold / yr**
- **6K–8K**
- avg 250–500/product
- **Revenue / yr**
- **$109K–$145K**
- units × avg price
- **Conversion rate**
- **7.8%**
- **Avg BSR**
- **#220**
- **Page quality**
- **0%**
- **Prime**
- **94%**
- **Sponsored**
- **89%**
- **Out of stock**
- **5.1%**
- **Avg brand age**
- **94 months**
- **Avg seller age**
- **154 days**
## **Competition: brands, sellers & click share**
The top 5 products take 69% of clicks — established leaders, but buyers still shop beyond them.
**Brands**
**13 **—flat
**Sellers**
**74**
**Top-5 brand share**
**76%**
Top 20: 100%
**Top-5 click share**
**69%**
Top 20: 100%
**Open market**
**18%**
- Nutricost27% - Swanson22% - Physician's CHOICE10% - Vitamatic9% - Nature's Bounty8% - Natural Foundation Supplements6%
## **lactobacillus demand & seasonality**
Weekly Amazon search volume, last 104 weeks — -5.9% search growth over the last 90 days.
30K20KHoliday '24Spike '25Prime Day '25Spike '26 seasonSepDecMarJunAugNovMarMay
Peak months: Aug, Sep, Oct · busiest ÷ quietest = 2.1×
[**Open Trend **](https://flapen.com/research/us/health-household/lactobacillus/trend)
## **Top lactobacillus search terms shoppers use**
The exact queries shoppers type, with yearly volume, growth and conversion.
- **lactobacillus acidophilus**97K/yr-6.0%6.9% conv. - **lactobacillus acidophilus probiotic**18K/yr+4.4%5.0% conv. - **lactobacillus acidophilus ncfm**4K/yr-43.1%2.0% conv. [**All search terms **](https://flapen.com/research/us/health-household/lactobacillus/search-terms)
## **Top lactobacillus products & what they sell for**
Every tracked product — its share of the shelf, its review moat, and what it sells for.
Each bubble is one product — market share against review moat; bubble size tracks estimated sales, color grades how beatable the incumbent looks.
0%10%$17K20%$34K30%$51K40%$67K101001K10K100K1.0M Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 18 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**Nutricost Lactobacillus Acidophilus 10 Billion CFU 120 Vegetarian Capsules**Nutricost**$14.84**4.6★1,727 rev](https://www.amazon.com/dp/B06Y1XXXG6) [2**Swanson Lactobacillus Acidophilus Probiotic for Adults Seeking Daily Digestive and Bowel Health Support with 1 Billion CFU - Acid-Resistant (250 Capsules)**Swanson**$13.23**4.7★1,080 rev](https://www.amazon.com/dp/B07F92LQHL) [3**Natures Bounty Lactobacillus Acidophilus Probiotic Supplement - Daily Probiotic for Women/Men Digestive Health 100 Million Organisms Vegetarian 1 Serving per Day 120 Tablets**Nature's Bounty**$6.72**4.6★78,050 rev](https://www.amazon.com/dp/B0014CVXMW) [4**Vitamatic Acidophilus Probiotic - 10 Billion CFU - 5X Potency - Daily Probiotic Supplement Supports Digestive Health - 120 Tablets**Vitamatic**$9.75**4.7★1,301 rev](https://www.amazon.com/dp/B0CTQ7H51F) [5**Lactobacillus Acidophilus Probiotic 240 Tablets (4 Month Supply) Researched Strain LA85 3 Billion CFU Digestive Health & Microbiome Support GMP Certified (240 Lactobacillus Acidophilus)**Natural Foundation Supplements**$9.95**4.6★431 rev](https://www.amazon.com/dp/B0CWVL9L5R)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**Vitamatic Lactobacillus Acidophilus Probiotic Powder - Digestive Health Support - 100 Gram (3.5 OZ) - 100 Servings**Vitamatic**$35.98**40 rev1y ago](https://www.amazon.com/dp/B0FC1K6G2F) [**Nutricost Lactobacillus Acidophilus 500 Million CFU Per Serving 120 Caps**Nutricost**$10.71**183 rev1y ago](https://www.amazon.com/dp/B0DMHH71VY) [**Metagenics UltraFlora Balance Probiotic - Shelf-Stable Daily Gut Health Supplement for Digestive & Immune Support* - Non-GMO & Gluten-Free - 30 Capsules**Metagenics**$24.27**2,051 rev1y ago](https://www.amazon.com/dp/B0DCWW1JKM) [**Lactobacillus Acidophilus Probiotic 240 Tablets (4 Month Supply) Researched Strain LA85 3 Billion CFU Digestive Health & Microbiome Support GMP Certified (240 Lactobacillus Acidophilus)**Natural Foundation Supplements**$9.95**431 rev2y ago](https://www.amazon.com/dp/B0CWVL9L5R) [**Vitamatic Acidophilus Probiotic - 10 Billion CFU - 5X Potency - Daily Probiotic Supplement Supports Digestive Health - 120 Tablets**Vitamatic**$9.75**1,301 rev2y ago](https://www.amazon.com/dp/B0CTQ7H51F)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**Probiotic 65 Billion - Probiotics with Prebiotic for Women & Men - Lactobacillus Acidophilus Digestive Health Capsules - Targeted Release Technology - Shelf Stable Supplement Non-GMO Dairy Free-30ct**BioSchwartz**$20.85**4.6★**▲ 257%**](https://www.amazon.com/dp/B084GW1N53) [**Swanson Lactobacillus Acidophilus Probiotic for Adults Seeking Daily Digestive and Bowel Health Support with 1 Billion CFU - Acid-Resistant (250 Capsules 2 Pack)**Swanson**$22.96**4.7★**▲ 173%**](https://www.amazon.com/dp/B07F2KPBYB) [**Metagenics UltraFlora Balance Probiotic - Shelf-Stable Daily Gut Health Supplement for Digestive & Immune Support* - Non-GMO & Gluten-Free - 30 Capsules**Metagenics**$24.27**4.6★**▲ 52%**](https://www.amazon.com/dp/B0DCWW1JKM) [**Vitamatic Acidophilus Probiotic - 10 Billion CFU - 5X Potency - Daily Probiotic Supplement Supports Digestive Health - 120 Tablets**Vitamatic**$9.75**4.7★**▲ 45%**](https://www.amazon.com/dp/B0CTQ7H51F) [**Swanson Lactobacillus Acidophilus Probiotic for Adults Seeking Daily Digestive and Bowel Health Support with 1 Billion CFU - Acid-Resistant (250 Capsules)**Swanson**$13.23**4.7★**▲ 34%**](https://www.amazon.com/dp/B07F92LQHL)
**~~View all trending →~~**
## **What reviews say buyers love and hate about lactobacillus**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Quality-Overall**17%
*“Excellent product—it was exactly what I needed”*
**Nutritional Content**13%
*“The best probiotic ever”*
**Regulates Digestion**10%
*“it didn't cause any digestive upset”*
**Efficiency**9%
*“Works Well”*
**Value For Money**7%
*“Great deal”*
**Advertised Vs Actual Product**5%
*“Arrived as described”*
**Acid Regulator/Stomach Ache Relief**5%
*“Helps with digestive issues”*
**Ease Of Chewing/Swallowing**3%
*“Easy to consume”*
**Ease Of Use**3%
*“easy to get down”*
**Side Effects**3%
*“Doesn't cause any side effects for me”*
### **What buyers complain about **
**Functionality-Overall**15%
*“Never worked”*
**Acid Regulator/Stomach Ache Relief**8%
*“Severe stomach pain”*
**Value For Money**8%
*“To expensive”*
**Smell**7%
*“Foul odor”*
**Regulates Digestion**7%
*“Bad for people who struggle with acid reflux”*
**Side Effects**6%
*“Significant Bad Side Effects”*
**Dosage**4%
*“A high-servings count thats a bit too hard to manage”*
**Allergies**4%
*“ITCHING”*
**Taste-Overall**3%
*“does not have a strong taste”*
**Nutritional Content**2%
*“Did not provide wholesome women's health”*
### **Top return reasons **
**Functionality-Overall**30%
**Value For Money**17%
**Acid Regulator/Stomach Ache Relief**9%
**Leak-Proof**7%
**Side Effects**4%
**Joint Pain**4%
**Ease Of Use**3%
**Ingredients-Overall**2%
**Accuracy-Overall**2%
**Comfort-Overall**2%
## **Common lactobacillus questions**
- **Is lactobacillus profitable to sell on Amazon United States?**
- The niche generates $169K/yr across 18 tracked products. 90-day search growth is -5.9%. Flapen's verdict: Skip it (46/100).
- **How competitive is the lactobacillus niche?**
- 13 brands and 74 sellers compete. The top 5 products take 69% of clicks and top 5 brands hold 76% of demand.
- **What do buyers complain about in lactobacillus?**
- Top complaints mined from reviews: Functionality-Overall, Acid Regulator/Stomach Ache Relief, Value For Money. The return rate is 0.0%.
- **When does demand for lactobacillus peak?**
- Demand peaks in Aug–Sep–Oct; the busiest month runs 2.1× the quietest.
- **What does it cost to enter the lactobacillus niche?**
- Listings span $6.72–$35.98; the average listing price is $18.14 (sweet spot $15–$100). The average incumbent carries 22,356 reviews — the moat a new listing must climb.
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