stomach flu
Skip itBrand-locked demand (top 5 brands take 98% of clicks) — this niche doesn't clear our bar today.
Returns
Incredible0.2%return rate — above 5% kills the launch gate
Conversion
Incredible14.0%search→purchase rate — share of searches ending in a sale
Avg price
Good$12.32avg listing price — sweet spot $15–$100
Quality gap
Bad4.6★avg incumbent rating — lower means beatable quality
Review moat
Bad11,654avg incumbent reviews — the moat a new listing must climb
Price range
Bad$6.56–$16.92cheapest to priciest tracked listing — scored on the share inside $15–$100
Competition
Bad80%top-5 click share — a locked-up shelf
Growth
Bad-23.5%90-day search growth — must beat 0% to launch
Market size
Bad$47K$47K/yr · 28K searches
Brand share
Bad98%top-5 brand share — brand-locked demand
According to Flapen's Amazon United States niche tracking, stomach flu is a $47K/yr Amazon United States market (28K searches/yr). The top 5 brands hold 98% of demand. Verdict: Skip it — 33/100.
Data updated Jul 10, 2026 · scored weekly · How we score niches
stomach flu market data
- Units sold / yr
- 3K–4K
- avg 250–500/product
- Revenue / yr
- $37K–$49K
- units × avg price
- Conversion rate
- 14.0%
- Avg BSR
- #60
- Page quality
- 0%
- Prime
- 100%
- Sponsored
- 82%
- Out of stock
- 1.0%
- Avg brand age
- 73 months
- Avg seller age
- 151 days
Competition & brand share
The top 5 products capture 80% of clicks — a locked-up shelf that new listings rarely crack.Brands
6 rising
Sellers
580
Top-5 brand share
98%
Top 20: 100%
Top-5 click share
80%
Top 20: 100%
Open market
0%
- Boiron80%
- Kaopectate5%
- MARYRUTH'S5%
- tummy drops4%
- Genexa4%
- Lysol2%
Demand
Weekly Amazon search volume, last 10 weeks — -23.5% search growth over the last 90 days.Top stomach flu search terms
- stomach bug essentials4K/yr
- boiron diarrhea relief4K/yr
- stomach bug4K/yr
- stomach flu5K/yr
- diaralia5K/yr
- stomach flu medicine3K/yr
- diaralia boiron2K/yr
Top stomach flu 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.
All 11 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
Boiron Diaralia Tablets for Diarrhea Relief Gas Bloating Intestinal Pain and Travlers Diarrhea - 60 Count
Boiron$9.074.4★960 rev
Boiron Diaralia On The Go Travel Essential for Diarrhea Relief Gas Bloating Intestinal Pain and Travelers Diarrhea - 2 Count (160 Pellets)
Boiron$9.304.4★273 rev
Boiron NauseaCalm Relief for Upset Stomach Nausea and Vomiting Due to Stomach Flu Overindulgence or Motion Sickness - Non-Drowsy - 60 Count
Boiron$10.634.5★2,529 rev
Boiron Arsenicum Album 30C Homeopathic Medicine for Relief from Diarrhea Nausea Vomiting Cramps and Travelers Diarrhea - 3 Count (240 Pellets)
Boiron$14.944.8★838 rev
Kaopectate Multi-Symptom Anti-Diarrheal & Upset Stomach Reliever 42 Caplets Anti Diarrhea Caplets
Kaopectate$6.564.7★4,883 rev
Newest
by launch date
Boiron DiarrheaCalm Tablets for Diarrhea Relief Gas Bloating Intestinal Pain and Travlers Diarrhea - 60 Count
Boiron$12.9815 rev
Boiron Diaralia On The Go Travel Essential for Diarrhea Relief Gas Bloating Intestinal Pain and Travelers Diarrhea - 2 Count (160 Pellets)
Boiron$9.30273 rev
Boiron NauseaCalm Relief for Upset Stomach Nausea and Vomiting Due to Stomach Flu Overindulgence or Motion Sickness - Non-Drowsy - 60 Count
Boiron$10.632,529 rev
Kaopectate Multi-Symptom Anti-Diarrheal & Upset Stomach Reliever 42 Caplets Anti Diarrhea Caplets
Kaopectate$6.564,883 rev
Tummypops Ginger Lollipops Variety Pack 21 ct for Queasy Stomachs
tummy drops$15.071,838 rev
Trending
90-day click momentumBoiron DiarrheaCalm Tablets for Diarrhea Relief Gas Bloating Intestinal Pain and Travlers Diarrhea - 60 Count
Boiron$12.984.7★
MARYRUTHS Activated Charcoal Capsules 950 mg Activated Charcoal | Substance Adsorption | Derived from Coconut Shells | Vegan Capsules from Pine Trees | Non-GMO | Gluten Free | 40 Count
MARYRUTH'S$14.644.8★
Genexa Kids Clean Tummy Relief | Heartburn Acid Indigestion & Sour Stomach Relief | Childrens Calcium Carbonate | Dye Free 0% Artificial Additives | Ages 2-11 Berry Flavor Chewable Tablets 30ct
Genexa$13.644.8★
Boiron Diaralia Tablets for Diarrhea Relief Gas Bloating Intestinal Pain and Travlers Diarrhea - 60 Count
Boiron$9.074.4★
Kaopectate Multi-Symptom Anti-Diarrheal & Upset Stomach Reliever 42 Caplets Anti Diarrhea Caplets
Kaopectate$6.564.7★
What buyers say about stomach flu
What buyers praise and complain about, mined from review topics.What buyers love
“Clean scent”
“No complaints”
“Does the job well”
“It cleans thoroughly”
“Sick tummy relief”
“Worth it”
“easy to store”
“Good for extra freshness”
“Love to use this to wash clothes and bedding, especially after everyone has just recovered from being sick”
“It cleans thoroughly”
What buyers complain about
“Was leaking”
“Why is the smell soooo strong”
“Did not work for me”
“had the other uncomfortable symptoms that come with it”
“the TOP IS VERY VERY DIFFICULT TO GET OPEN”
“though it does turn something a dark color”
“Its just very expensive”
“chalky tasting liquid or chewing up tablets”
“It is not recommended for people with asthma or respiratory disorders or skin allergies”
“They are tiny”
Top return reasons
Common questions
- Is stomach flu profitable to sell on Amazon United States?
- The niche generates $47K/yr across 11 tracked products. 1 of 1 products launched in the last 360 days are still selling. 90-day search growth is -23.5%. Flapen's verdict: Skip it (33/100).
- How competitive is the stomach flu niche?
- 6 brands and 580 sellers compete. The top 5 products take 80% of clicks and top 5 brands hold 98% of demand.
- What do buyers complain about in stomach flu?
- Top complaints mined from reviews: Leak-Proof, Smell, Functionality-Overall. The return rate is 0.2%.
- What does it cost to enter the stomach flu niche?
- Listings span $6.56–$16.92; the average listing price is $12.32 (sweet spot $15–$100). The average incumbent carries 11,654 reviews — the moat a new listing must climb.