---
title: "Cat Diarrhea Medicine — $396K/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/pet-supplies/cat-diarrhea-medicine"
last_updated: "2026-07-21T17:40:58.317Z"
locale: en
meta:
description: "Niche score 55/100 · $396K/yr market · 185K searches/yr · $20.39 avg price. Soft demand (-11.1% this quarter) keeps it on the watch list. Data updated Jul 2026."
"og:description": "Niche score 55/100 · $396K/yr market · 185K searches/yr · $20.39 avg price. Soft demand (-11.1% this quarter) keeps it on the watch list. Data updated Jul 2026."
"og:title": "Cat Diarrhea Medicine — $396K/yr Amazon US Niche (2026) - Flapen"
---
# **cat diarrhea medicine**
**Worth a look**
Shows low returns (0.1%), but soft demand (-11.1% this quarter) keeps it on the watch list.
Market size 55Growth 19Conversion 89Competition 24Returns 100Price range 69Avg price 88Brand share 55Review moat 34Quality gap 62
**Returns**
**Incredible****0.1%**
return rate — above 6% kills the launch gate
**Conversion**
**Great****10.5%**
search→purchase rate — share of searches ending in a sale
**Avg price**
**Great****$20.39**
avg listing price — sweet spot $15–$100
**Price range**
**Good****$7.01–$32.92**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Quality gap**
**Good****4.4★**
avg incumbent rating — lower means beatable quality
**Market size**
**Good****$396K**
$396K/yr · 185K searches
**Brand share**
**Good****72%**
top-5 brand share — brands hold most of the demand
**Review moat**
**Okay****3,131.29**
avg incumbent reviews — the moat a new listing must climb
**Competition**
**Bad****71%**
top-5 click share — a locked-up shelf
**Growth**
**Bad****-11.1%**
90-day search growth — must beat 0% to launch
According to Flapen's Amazon United States niche tracking, cat diarrhea medicine is a $396K/yr Amazon United States market (185K searches/yr). The top 5 brands hold 72% of demand. Demand peaks in Oct–Nov. Verdict: Worth a look — 55/100.
Data updated Jul 9, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **cat diarrhea medicine market data**
- **Units sold / yr**
- **15K–20K**
- avg 750–1,000/product
- **Revenue / yr**
- **$306K–$408K**
- units × avg price
- **Launch success**
- **—**
- 1 of 3 new (360d)
- **Conversion rate**
- **10.5%**
- **Avg BSR**
- **#45**
- **Page quality**
- **0%**
- **Prime**
- **100%**
- **Sponsored**
- **88%**
- **Out of stock**
- **0.9%**
- **Avg brand age**
- **71 months**
- **Avg seller age**
- **154 days**
## **Competition & brand share**
The top 5 products capture 71% of clicks — a locked-up shelf that new listings rarely crack.
**Brands**
**16 **▲rising
**Sellers**
**30**
**Top-5 brand share**
**72%**
Top 20: 100%
**Top-5 click share**
**71%**
Top 20: 100%
**Open market**
**21%**
- Nutri-Vet23% - FLORA-PECTIN16% - Pro Plan Veterinary Diets16% - NaturVet9% - Vetoquinol8% - Doctor By7%
## **Demand & seasonality**
Weekly Amazon search volume, last 104 weeks — -11.1% search growth over the last 90 days.
9K7KPrime Day '25Spike '25 seasonSepDecMarJunAugNovMarMay
Peak months: Oct, Nov · busiest ÷ quietest = 3.0×
[**Open Trend **](https://flapen.com/research/us/pet-supplies/cat-diarrhea-medicine/trend)
## **Top cat diarrhea medicine search terms**
- **cat diarrhea medicine**31K/yr-14.3%11.6% conv. - **anti diarrhea for cats**24K/yr-9.7%11.2% conv. - **cat anti diarrhea medicine**9K/yr+37.0%12.0% conv. - **cat diarrhea treatment**11K/yr+18.2%8.9% conv. - **cat diarrhea**17K/yr-28.8%8.5% conv. - **diarrhea medicine for cats**13K/yr+0.1%10.3% conv. - **fast acting anti diarrhea for cats**12K/yr-44.9%7.1% conv. - **kitten diarrhea treatment**10K/yr+79.7%6.7% conv. - **anti diarrhea food for cats**7K/yr-16.2%2.1% conv. - **antidiarrheal for cats**7K/yr-19.6%12.3% conv. [**All search terms **](https://flapen.com/research/us/pet-supplies/cat-diarrhea-medicine/search-terms)
## **Top cat diarrhea medicine 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%$40K20%$79K30%$119K40%$159K101001K10K100K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 17 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**Nutri-Vet Anti-Diarrhea Liquid for Cats Gentle Formula with Pectin and Kaolin Soothes Upset Stomach and Irritated GI Tract Slows Stool Passage Cat Essentials Detoxifies Bacterial Toxins 4oz**Nutri-Vet**$10.79**4.1★3,317 rev](https://www.amazon.com/dp/B00H2GMWW4) [2**FLORA-PECTIN Oral Paste for Dogs & Cats-Helps Reduce Occasional Loose Stool & Diarrhea Balance Gut pH Support Normal Digestion & Intestinal Flora-Fast Acting (15 CC - Tasty Chicken Flavor)**FLORA-PECTIN**$15.44**4.5★730 rev](https://www.amazon.com/dp/B0DBXXXM94) [3**Pro Plan Veterinary Diets FortiFlora Daily Probiotic Powder Supplement for Cats with Digestive Support and Immune System for Occasional Diarrhea**Pro Plan Veterinary Diets**$29.39**4.7★20,061 rev](https://www.amazon.com/dp/B001650OE0) [4**NaturVet Anti-Diarrhea Liquid Pet Supplement Plus Kaolin Helps Alleviate Discomfort Cramping Irritation from Diarrhea for Dogs Cats Great Taste 8 Oz.**NaturVet**$13.42**4.3★1,200 rev](https://www.amazon.com/dp/B0029D7IBU) [5**Doctor By Cat Biome Probiotics for cats Anti Diarrhea Feline Gut & Digestive Support Immune Health Sensitive Stomach Constipation with L. plantarum+Prebiotics 30 Lickable Formula Individually Packaged**Doctor By**$32.92**4.3★296 rev](https://www.amazon.com/dp/B0F9NQWVZM)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**Joyfull Probiotic for Cats Clinically Proven Strains for Diarrhea & Digestive Support 30 Daily Packets with Beef Bone Broth**JoyFull**$26.38**44 rev7mo ago](https://www.amazon.com/dp/B0FCLHRW9F) [**VetIQ Cat Probiotics Supplement Probiotic Prebiotic & Postbiotic Cat Supplements Digestive & Gut Health Support Constipation & Diarrhea Relief Chicken Flavored 3.7 oz**VETIQ**$12.19**1,644 rev7mo ago](https://www.amazon.com/dp/B0FWSLLDS8) [**PURPLE CAT Feline Biome Probiotic Treats for Cats Cat Gut & Digestive Support Pet Diarrhea Relief & Immune Health Feline-Specific Strains Healthy Treats Real Chicken Liver Flavor 60 Chews**Purple Cat**$23.50**72 rev9mo ago](https://www.amazon.com/dp/B0FRYRZR96) [**Doctor By Cat Biome Probiotics for cats Anti Diarrhea Feline Gut & Digestive Support Immune Health Sensitive Stomach Constipation with L. plantarum+Prebiotics 30 Lickable Formula Individually Packaged**Doctor By**$32.92**296 rev1y ago](https://www.amazon.com/dp/B0F9NQWVZM) [**Nutridog Cat Probiotic for Digestive & Gut Health - 150 Dual Texture Crunchy & Creamy Bites - Relief for Constipation Diarrhea & Sensitive Stomach with Prebiotics & Taurine - Duck Flavor**Nutridog**$20.76**63 rev1y ago](https://www.amazon.com/dp/B0F6K822S5)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**Joyfull Probiotic for Cats Clinically Proven Strains for Diarrhea & Digestive Support 30 Daily Packets with Beef Bone Broth**JoyFull**$26.38**4.6★**▲ 189%**](https://www.amazon.com/dp/B0FCLHRW9F) [**PetAg Pet Pectillin Anti-Diarrheal - 4 oz - Helps Relieve Diarrhea or Loose Stool in Dogs and Cats - Replaces Lost Electrolytes - Easy to Administer**PetAg**$7.01**4.4★**▲ 86%**](https://www.amazon.com/dp/B004LODJYK) [**PURPLE CAT Feline Biome Probiotic Treats for Cats Cat Gut & Digestive Support Pet Diarrhea Relief & Immune Health Feline-Specific Strains Healthy Treats Real Chicken Liver Flavor 60 Chews**Purple Cat**$23.50**4.0★**▲ 58%**](https://www.amazon.com/dp/B0FRYRZR96) [**VetIQ Cat Probiotics Supplement Probiotic Prebiotic & Postbiotic Cat Supplements Digestive & Gut Health Support Constipation & Diarrhea Relief Chicken Flavored 3.7 oz**VETIQ**$12.19**4.6★**▲ 53%**](https://www.amazon.com/dp/B0FWSLLDS8) [**FLORA-PECTIN Oral Paste for Dogs & Cats-Helps Reduce Occasional Loose Stool & Diarrhea Balance Gut pH Support Normal Digestion & Intestinal Flora-Fast Acting (15 CC - Tasty Chicken Flavor)**FLORA-PECTIN**$15.44**4.5★**▲ 47%**](https://www.amazon.com/dp/B0DBXXXM94)
**~~View all trending →~~**
## **What buyers say about cat diarrhea medicine**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Pet Friendly**16%
*“Happy pets”*
**Quality-Overall**15%
*“Very good product for my needs”*
**Taste-Overall**11%
*“Great tasting”*
**Ease Of Use**10%
*“Easy to use”*
**Flavor**8%
*“The cat really likes the flavor”*
**Value For Money**6%
*“Worth every penny”*
**Advertised Vs Actual Product**5%
*“Works EXACTLY AS STATED”*
**Ease Of Chewing/Swallowing**3%
*“Easy to feed”*
**Time Taken**3%
*“Worked fast”*
**Ingredients-Overall**2%
*“The ingredient list is impressive”*
### **What buyers complain about **
**Indigestion**21%
*“had tummy issues”*
**Functionality-Overall**13%
*“Did not work well”*
**Value For Money**12%
*“can't be certain, pricey”*
**Smell**7%
*“Smells like plastic chemicals”*
**Taste-Overall**6%
*“My cat wont even taste it- not what i expected”*
**Size-Overall**3%
*“The packets are therefore a bit larger”*
**Allergies**3%
*“SEVERE ALLERGIC REACTION”*
**Advertised Vs Actual Product**2%
*“False advertising”*
**Ease Of Use**2%
*“Not usable”*
**Quality-Overall**1%
*“Total garbage”*
### **Top return reasons **
**Functionality-Overall**22%
**Value For Money**11%
**Defective Material/Parts**11%
**Leak-Proof**11%
**Product Condition**11%
**Indigestion**11%
**Ease Of Chewing/Swallowing**6%
**Instructions/User Manual/Troubleshooting**6%
**Escape Proof**6%
**Advertised Vs Actual Product**6%
## **Common questions**
- **Is cat diarrhea medicine profitable to sell on Amazon United States?**
- The niche generates $396K/yr across 17 tracked products. 1 of 3 products launched in the last 360 days are still selling. 90-day search growth is -11.1%. Flapen's verdict: Worth a look (55/100).
- **How competitive is the cat diarrhea medicine niche?**
- 16 brands and 30 sellers compete. The top 5 products take 71% of clicks and top 5 brands hold 72% of demand.
- **What do buyers complain about in cat diarrhea medicine?**
- Top complaints mined from reviews: Indigestion, Functionality-Overall, Value For Money. The return rate is 0.1%.
- **When does demand for cat diarrhea medicine peak?**
- Demand peaks in Oct–Nov; the busiest month runs 3.0× the quietest.
- **What does it cost to enter the cat diarrhea medicine niche?**
- Listings span $7.01–$32.92; the average listing price is $20.39 (sweet spot $15–$100). The average incumbent carries 3,131 reviews — the moat a new listing must climb.
## **Related niches in Pet Supplies**
- 73 [**phosphate test kit**](https://flapen.com/research/us/pet-supplies/phosphate-test-kit)$194K/yr+152.5%**Worth a look**- 73 [**flea repellent for dogs**](https://flapen.com/research/us/pet-supplies/flea-repellent-for-dogs)$1.7M/yr+136.7%**Launch it**- 73 [**kitten bottles for nursing**](https://flapen.com/research/us/pet-supplies/kitten-bottles-for-nursing)$457K/yr+166.2%**Worth a look**- 73 [**dog stake**](https://flapen.com/research/us/pet-supplies/dog-stake)$573K/yr+55.9%**Worth a look**- 73 [**bully sticks**](https://flapen.com/research/us/pet-supplies/bully-sticks)$12.4M/yr-6.9%**Worth a look**- 73 [**pet oral tartar remover spray**](https://flapen.com/research/us/pet-supplies/pet-oral-tartar-remover-spray)$100K/yr>1,000%**Worth a look**[**All Pet Supplies niches **](https://flapen.com/research/us/pet-supplies)