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.

cat diarrhea medicine

Worth a look

Shows low returns (0.1%), but soft demand (-11.1% this quarter) keeps it on the watch list.

Returns

Incredible0.1%

return rate — above 6% kills the launch gate

Conversion

Great10.5%

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

Good4.4★

avg incumbent rating — lower means beatable quality

Market size

Good$396K

$396K/yr · 185K searches

Brand share

Good72%

top-5 brand share — brands hold most of the demand

Review moat

Okay3,131.29

avg incumbent reviews — the moat a new listing must climb

Competition

Bad71%

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

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

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.

Peak months: Oct, Nov · busiest ÷ quietest = 3.0×

Open Trend

Top cat diarrhea medicine search terms

cat diarrhea medicine31K/yr -14.3%11.6% conv.
anti diarrhea for cats24K/yr -9.7%11.2% conv.
cat anti diarrhea medicine9K/yr +37.0%12.0% conv.
cat diarrhea treatment11K/yr +18.2%8.9% conv.
cat diarrhea17K/yr -28.8%8.5% conv.
diarrhea medicine for cats13K/yr +0.1%10.3% conv.
fast acting anti diarrhea for cats12K/yr -44.9%7.1% conv.
kitten diarrhea treatment10K/yr +79.7%6.7% conv.
anti diarrhea food for cats7K/yr -16.2%2.1% conv.
antidiarrheal for cats7K/yr -19.6%12.3% conv.

All 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.

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

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$10.794.1★3,317 rev

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$15.444.5★730 rev

Pro Plan Veterinary Diets FortiFlora Daily Probiotic Powder Supplement for Cats with Digestive Support and Immune System for Occasional Diarrhea

Pro Plan Veterinary Diets$29.394.7★20,061 rev

NaturVet Anti-Diarrhea Liquid Pet Supplement Plus Kaolin Helps Alleviate Discomfort Cramping Irritation from Diarrhea for Dogs Cats Great Taste 8 Oz.

NaturVet$13.424.3★1,200 rev

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$32.924.3★296 rev

Newest

by launch date

Joyfull Probiotic for Cats Clinically Proven Strains for Diarrhea & Digestive Support 30 Daily Packets with Beef Bone Broth

JoyFull$26.3844 rev

7mo ago

VetIQ Cat Probiotics Supplement Probiotic Prebiotic & Postbiotic Cat Supplements Digestive & Gut Health Support Constipation & Diarrhea Relief Chicken Flavored 3.7 oz

VETIQ$12.191,644 rev

7mo ago

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$23.5072 rev

9mo ago

Doctor By$32.92296 rev

1y ago

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$20.7663 rev

1y ago

What buyers say about cat diarrhea medicine

What buyers praise and complain about, mined from review topics.

What buyers love

Pet Friendly16%

“Happy pets”

Quality-Overall15%

“Very good product for my needs”

Taste-Overall11%

“Great tasting”

Ease Of Use10%

“Easy to use”

Flavor8%

“The cat really likes the flavor”

Value For Money6%

“Worth every penny”

Advertised Vs Actual Product5%

“Works EXACTLY AS STATED”

Ease Of Chewing/Swallowing3%

“Easy to feed”

Time Taken3%

“Worked fast”

Ingredients-Overall2%

“The ingredient list is impressive”

What buyers complain about

Indigestion21%

“had tummy issues”

Functionality-Overall13%

“Did not work well”

Value For Money12%

“can't be certain, pricey”

Smell7%

“Smells like plastic chemicals”

Taste-Overall6%

“My cat wont even taste it- not what i expected”

Size-Overall3%

“The packets are therefore a bit larger”

Allergies3%

“SEVERE ALLERGIC REACTION”

Advertised Vs Actual Product2%

“False advertising”

Ease Of Use2%

“Not usable”

Quality-Overall1%

“Total garbage”

Top return reasons

Functionality-Overall22%

Value For Money11%

Defective Material/Parts11%

Leak-Proof11%

Product Condition11%

Indigestion11%

Ease Of Chewing/Swallowing6%

Instructions/User Manual/Troubleshooting6%

Escape Proof6%

Advertised Vs Actual Product6%

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.