Lactobacillus
Skip itA deep review moat (22,356 avg reviews) — this niche doesn't clear our bar today.
Returns
Incredible0.0%return rate — above 5% kills the launch gate
Avg price
Great$18.14avg listing price — sweet spot $15–$100
Conversion
Great7.8%search→purchase rate — share of searches ending in a sale
Price range
Good$6.72–$35.98cheapest to priciest tracked listing — scored on the share inside $15–$100
Brand share
Okay76%top-5 brand share — brands hold most of the demand
Market size
Okay$169K$169K/yr · 119K searches
Competition
Okay69%top-5 click share — leaders hold, buyers still browse
Quality gap
Bad4.6★avg incumbent rating — lower means beatable quality
Growth
Bad-5.9%90-day search growth — must beat 0% to launch
Review moat
Bad22,356.33avg 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
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.Peak months: Aug, Sep, Oct · busiest ÷ quietest = 2.1×
Top lactobacillus search terms shoppers use
The exact queries shoppers type, with yearly volume, growth and conversion.- lactobacillus acidophilus97K/yr
- lactobacillus acidophilus probiotic18K/yr
- lactobacillus acidophilus ncfm4K/yr
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.
All 18 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
Nutricost Lactobacillus Acidophilus 10 Billion CFU 120 Vegetarian Capsules
Nutricost$14.844.6★1,727 rev
Swanson Lactobacillus Acidophilus Probiotic for Adults Seeking Daily Digestive and Bowel Health Support with 1 Billion CFU - Acid-Resistant (250 Capsules)
Swanson$13.234.7★1,080 rev
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$6.724.6★78,050 rev
Vitamatic Acidophilus Probiotic - 10 Billion CFU - 5X Potency - Daily Probiotic Supplement Supports Digestive Health - 120 Tablets
Vitamatic$9.754.7★1,301 rev
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$9.954.6★431 rev
Newest
by launch date
Vitamatic Lactobacillus Acidophilus Probiotic Powder - Digestive Health Support - 100 Gram (3.5 OZ) - 100 Servings
Vitamatic$35.9840 rev
Nutricost Lactobacillus Acidophilus 500 Million CFU Per Serving 120 Caps
Nutricost$10.71183 rev
Metagenics UltraFlora Balance Probiotic - Shelf-Stable Daily Gut Health Supplement for Digestive & Immune Support* - Non-GMO & Gluten-Free - 30 Capsules
Metagenics$24.272,051 rev
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$9.95431 rev
Vitamatic Acidophilus Probiotic - 10 Billion CFU - 5X Potency - Daily Probiotic Supplement Supports Digestive Health - 120 Tablets
Vitamatic$9.751,301 rev
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$20.854.6★
Swanson Lactobacillus Acidophilus Probiotic for Adults Seeking Daily Digestive and Bowel Health Support with 1 Billion CFU - Acid-Resistant (250 Capsules 2 Pack)
Swanson$22.964.7★
Metagenics UltraFlora Balance Probiotic - Shelf-Stable Daily Gut Health Supplement for Digestive & Immune Support* - Non-GMO & Gluten-Free - 30 Capsules
Metagenics$24.274.6★
Vitamatic Acidophilus Probiotic - 10 Billion CFU - 5X Potency - Daily Probiotic Supplement Supports Digestive Health - 120 Tablets
Vitamatic$9.754.7★
Swanson Lactobacillus Acidophilus Probiotic for Adults Seeking Daily Digestive and Bowel Health Support with 1 Billion CFU - Acid-Resistant (250 Capsules)
Swanson$13.234.7★
What reviews say buyers love and hate about lactobacillus
What buyers praise and complain about, mined from review topics.What buyers love
“Excellent product—it was exactly what I needed”
“The best probiotic ever”
“it didn't cause any digestive upset”
“Works Well”
“Great deal”
“Arrived as described”
“Helps with digestive issues”
“Easy to consume”
“easy to get down”
“Doesn't cause any side effects for me”
What buyers complain about
“Never worked”
“Severe stomach pain”
“To expensive”
“Foul odor”
“Bad for people who struggle with acid reflux”
“Significant Bad Side Effects”
“A high-servings count thats a bit too hard to manage”
“ITCHING”
“does not have a strong taste”
“Did not provide wholesome women's health”
Top return reasons
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.