---
title: "Saccharomyces Boulardii — £241K/yr Amazon UK Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/uk/health-personal-care/saccharomyces-boulardii"
last_updated: "2026-07-31T15:21:07.257Z"
locale: en
meta:
description: "Niche score 47/100 · £241K/yr market · 99K searches/yr · £17.46 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:description": "Niche score 47/100 · £241K/yr market · 99K searches/yr · £17.46 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:title": "Saccharomyces Boulardii — £241K/yr Amazon UK Niche (2026) - Flapen"
---
# **saccharomyces boulardii**
**Skip it**
A concentrated shelf (top 5 take 90% of clicks) — this niche doesn't clear our bar today.
Market size 45Growth 20Conversion 96Competition 9Returns 100Price range 61Avg price 81Brand share 17Review moat 80Quality gap 38
**Returns**
**Incredible****0.0%**
return rate — above 5% kills the launch gate
**Conversion**
**Incredible****13.9%**
search→purchase rate — share of searches ending in a sale
**Avg price**
**Great****£17.46**
avg listing price — sweet spot $15–$100
**Review moat**
**Great****407.11**
avg incumbent reviews — the moat a new listing must climb
**Price range**
**Good****£6.99–£27.55**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Market size**
**Okay****£241K**
£241K/yr · 99K searches
**Quality gap**
**Okay****4.5★**
avg incumbent rating — lower means beatable quality
**Growth**
**Bad****-10.1%**
90-day search growth — must beat 0% to launch
**Brand share**
**Bad****93%**
top-5 brand share — brand-locked demand
**Competition**
**Bad****90%**
top-5 click share — a locked-up shelf
According to Flapen's Amazon United Kingdom niche tracking, saccharomyces boulardii is a £241K/yr Amazon United Kingdom market (99K searches/yr). The top 5 brands hold 93% of demand. Demand peaks in Jun. Verdict: Skip it — 47/100.
Data updated Jul 25, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **saccharomyces boulardii market data**
- **Units sold / yr**
- **10K–13K**
- avg 1,250–1,500/product
- **Revenue / yr**
- **£175K–£218K**
- units × avg price
- **Conversion rate**
- **13.9%**
- **Avg BSR**
- **#25**
- **Page quality**
- **0%**
- **Prime**
- **100%**
- **Sponsored**
- **89%**
- **Out of stock**
- **1.7%**
- **Avg brand age**
- **69 months**
- **Avg seller age**
- **161 days**
## **Competition & brand share**
The top 5 products capture 90% of clicks — a locked-up shelf that new listings rarely crack.
**Brands**
**8 **▼falling
**Sellers**
**52**
**Top-5 brand share**
**93%**
Top 20: 100%
**Top-5 click share**
**90%**
Top 20: 100%
**Open market**
**4%**
- Optibac Probiotics52% - swiss bioenergetics18% - Bio-Kult12% - ALPHA018% - Time Health3% - Natures Zest3% - Open — no brand owns it (2 brands, 4%)
## **Demand & seasonality**
Weekly Amazon search volume, last 104 weeks — -10.1% search growth over the last 90 days.
4K3KSpike '25Spike '26 seasonSepDecMarJunAugNovMarMay
Peak months: Jun · busiest ÷ quietest = 1.7×
[**Open Trend **](https://flapen.com/research/uk/health-personal-care/saccharomyces-boulardii/trend)
## **Top saccharomyces boulardii search terms**
- **saccharomyces boulardii**52K/yr-8.5%10.5% conv. - **s boulardii**11K/yr-9.7%11.8% conv. - **saccharomyces boulardii probiotic**11K/yr-28.4%10.4% conv. - **optibac saccharomyces boulardii**7K/yr+8.3%15.3% conv. - **florastor**6K/yr+5.0%4.3% conv. - **s boulardii probiotic**5K/yr-9.4%13.7% conv. - **optibac s boulardii**4K/yr-20.3%23.0% conv. - **florastor probiotics**3K/yr-26.7%1.4% conv. [**All search terms **](https://flapen.com/research/uk/health-personal-care/saccharomyces-boulardii/search-terms)
## **Top saccharomyces boulardii 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%£48K30%£72K40%£96K1101001K10K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 9 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**Optibac Saccharomyces Boulardii - Vegan Digestive Supplement with 5 Billion Live Cultures - Most Trusted & Recommended Brand - 40 Capsules**Optibac Probiotics**£16.31**4.6★1,110 rev](https://www.amazon.co.uk/dp/B0719BVG2Q) [2**Saccharomyces Boulardii 5 Billion CFU 90 Capsules - No Refrigeration Required - High Strength Non-Colonising Yeast with synergistic Olive Leaf Biotin and Vitamin D3**swiss bioenergetics**£12.81**4.6★813 rev](https://www.amazon.co.uk/dp/B07N1SQC21) [3**Optibac Saccharomyces Boulardii - Vegan Digestive Supplement with 5 Billion Live Cultures - Most Trusted & Recommended Brand - 80 Capsules**Optibac Probiotics**£27.55**4.6★1,110 rev](https://www.amazon.co.uk/dp/B0056PHUGG) [4**Bio-Kult S. Boulardii + Vitamin D3 Saccharomyces Boulardii Yeast with Preplex Prebiotics for Gut & Immune Support Resilient Live Yeast Culture Suitable for Travel & Antibiotics 30 Capsules**Bio-Kult**£6.99**4.4★292 rev](https://www.amazon.co.uk/dp/B085MYFHM7) [5**Saccharomyces Boulardii 5 Billion CFU 90 Vegan Capsules - No Refrigeration Required - High Strength Non-Colonising Yeast by Alpha01**ALPHA01**£7.50**4.8★19 rev](https://www.amazon.co.uk/dp/B0F7N7HDFL)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**Invivo Bio.Me Saccharomyces Boulardii Probiotics Supplement Targeted Gut Microbiome Support Probiotic Clinically Informed Probiotics for Women and Men Digestive Health**invivo**£23.32**8 rev10mo ago](https://www.amazon.co.uk/dp/B0GVVMBC59) [**Saccharomyces Boulardii - 6 Billion CFU - Vegan - 120 Caps - UK Made**Time Health**£17.90**136 rev2y ago](https://www.amazon.co.uk/dp/B0D2RR8Y37) [**Natures Zest Saccharomyces Boulardii 20 Billion CFU 120 High Strength Vegan Capsules | 4 Month Supply Live Cultures with FOS Fibre Men & Women UK Made**Natures Zest**£21.54**142 rev6y ago](https://www.amazon.co.uk/dp/B0881MF6FJ) [**Bio-Kult S. Boulardii + Vitamin D3 Saccharomyces Boulardii Yeast with Preplex Prebiotics for Gut & Immune Support Resilient Live Yeast Culture Suitable for Travel & Antibiotics 30 Capsules**Bio-Kult**£6.99**292 rev6y ago](https://www.amazon.co.uk/dp/B085MYFHM7) [**Saccharomyces Boulardii 5 Billion CFU 90 Capsules - No Refrigeration Required - High Strength Non-Colonising Yeast with synergistic Olive Leaf Biotin and Vitamin D3**swiss bioenergetics**£12.81**813 rev7y ago](https://www.amazon.co.uk/dp/B07N1SQC21)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**Invivo Bio.Me Saccharomyces Boulardii Probiotics Supplement Targeted Gut Microbiome Support Probiotic Clinically Informed Probiotics for Women and Men Digestive Health**invivo**£23.32**4.5★**▲ 270%**](https://www.amazon.co.uk/dp/B0GVVMBC59) [**Saccharomyces Boulardii 5 Billion CFU 90 Vegan Capsules - No Refrigeration Required - High Strength Non-Colonising Yeast by Alpha01**ALPHA01**£7.50**4.8★**▲ 59%**](https://www.amazon.co.uk/dp/B0F7N7HDFL) [**Natures Zest Saccharomyces Boulardii 20 Billion CFU 120 High Strength Vegan Capsules | 4 Month Supply Live Cultures with FOS Fibre Men & Women UK Made**Natures Zest**£21.54**4.4★**▲ 15%**](https://www.amazon.co.uk/dp/B0881MF6FJ) [**Optibac Saccharomyces Boulardii - Vegan Digestive Supplement with 5 Billion Live Cultures - Most Trusted & Recommended Brand - 80 Capsules**Optibac Probiotics**£27.55**4.6★**— 4%**](https://www.amazon.co.uk/dp/B0056PHUGG) [**Bio-Kult S. Boulardii + Vitamin D3 Saccharomyces Boulardii Yeast with Preplex Prebiotics for Gut & Immune Support Resilient Live Yeast Culture Suitable for Travel & Antibiotics 30 Capsules**Bio-Kult**£6.99**4.4★**— 1%**](https://www.amazon.co.uk/dp/B085MYFHM7)
**~~View all trending →~~**
## **What buyers say about saccharomyces boulardii**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Acid Regulator/Stomach Ache Relief**13%
*“Helped my stomach a lot”*
**Quality-Overall**12%
*“the quality appears consistent”*
**Value For Money**12%
*“it feels like fair value”*
**Efficiency**9%
*“Effective”*
**Regulates Digestion**9%
*“Helps keep digestion”*
**Nutritional Content**6%
*“Great quality probiotic”*
**Ease Of Use**4%
*“Easy to take”*
**Ease Of Chewing/Swallowing**3%
*“Really easy to swallow which is great”*
**Soft Feel**2%
*“Feel good”*
**Fever Relief**2%
*“didn't get sick so there you go”*
### **What buyers complain about **
**Acid Regulator/Stomach Ache Relief**11%
*“My stomach has started to settle down now”*
**Value For Money**9%
*“They used to be cheaper to purchase on here”*
**Side Effects**8%
*“Probably my fault for not reading side effects”*
**Regulates Digestion**8%
*“Had to stop using these as they caused severe constipation”*
**Functionality-Overall**7%
*“Didnt work for me”*
**Size-Overall**4%
*“The capsules are slightly larger than other brands I have tried”*
**Dosage**3%
*“As a result shes on 10 tablets a day which cause havoc to her system”*
**Vitamin**2%
*“Not sure about the need of vitamin D”*
**Touch/Button Controls**2%
*“Unfortunately I hit the wrong button when I submitted the delivery feedback”*
**Allergies**2%
*“having suffered with bloating for many years now”*
## **Common questions**
- **Is saccharomyces boulardii profitable to sell on Amazon United Kingdom?**
- The niche generates £241K/yr across 9 tracked products. 0 of 1 products launched in the last 360 days are still selling. 90-day search growth is -10.1%. Flapen's verdict: Skip it (47/100).
- **How competitive is the saccharomyces boulardii niche?**
- 8 brands and 52 sellers compete. The top 5 products take 90% of clicks and top 5 brands hold 93% of demand.
- **What do buyers complain about in saccharomyces boulardii?**
- Top complaints mined from reviews: Acid Regulator/Stomach Ache Relief, Value For Money, Side Effects. The return rate is 0.0%.
- **When does demand for saccharomyces boulardii peak?**
- Demand peaks in Jun; the busiest month runs 1.7× the quietest.
- **What does it cost to enter the saccharomyces boulardii niche?**
- Listings span £6.99–£27.55; the average listing price is £17.46 (sweet spot $15–$100). The average incumbent carries 407 reviews — the moat a new listing must climb.
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