Is cat diarrhea treatment profitable to sell on Amazon United Kingdom?

The niche generates £145K/yr across 13 tracked products. 1 of 1 products launched in the last 360 days are still selling. 90-day search growth is -7.9%. Flapen's verdict: Skip it (43/100).

How competitive is the cat diarrhea treatment niche?

8 brands and 34 sellers compete. The top 5 products take 77% of clicks and top 5 brands hold 92% of demand.

What do buyers complain about in cat diarrhea treatment?

Top complaints mined from reviews: Value For Money, Indigestion, Functionality-Overall. The return rate is 0.1%.

When does demand for cat diarrhea treatment peak?

Demand peaks in Apr–Jun; the busiest month runs 1.8× the quietest.

What does it cost to enter the cat diarrhea treatment niche?

Listings span £3.61–£25.69; the average listing price is £11.34 (sweet spot $15–$100). The average incumbent carries 4,570 reviews — the moat a new listing must climb.

cat diarrhea treatment

Skip it

A concentrated shelf (top 5 take 77% of clicks) — this niche doesn't clear our bar today.

Conversion

Incredible20.6%

search→purchase rate — share of searches ending in a sale

Returns

Incredible0.1%

return rate — above 5% kills the launch gate

Price range

Okay£3.61–£25.69

cheapest to priciest tracked listing — scored on the share inside $15–$100

Avg price

Okay£11.34

avg listing price — sweet spot $15–$100

Quality gap

Okay4.5★

avg incumbent rating — lower means beatable quality

Market size

Okay£145K

£145K/yr · 62K searches

Review moat

Bad4,570.15

avg incumbent reviews — the moat a new listing must climb

Growth

Bad-7.9%

90-day search growth — must beat 0% to launch

Brand share

Bad92%

top-5 brand share — brand-locked demand

Competition

Bad77%

top-5 click share — a locked-up shelf

According to Flapen's Amazon United Kingdom niche tracking, cat diarrhea treatment is a £145K/yr Amazon United Kingdom market (62K searches/yr). The top 5 brands hold 92% of demand. Demand peaks in Apr–Jun. Verdict: Skip it — 43/100.

Data updated Jul 28, 2026 · scored weekly · How we score niches

cat diarrhea treatment market data

Units sold / yr: 10K–13K; avg 1,000–1,250/product
Revenue / yr: £113K–£142K; units × avg price
Conversion rate: 20.6%
Avg BSR: #36
Page quality: 0%
Prime: 100%
Sponsored: 38%
Out of stock: 0.0%
Avg brand age: 68 months
Avg seller age: 183 days

Competition & brand share

The top 5 products capture 77% of clicks — a locked-up shelf that new listings rarely crack.

Brands

8 falling

Sellers

Top-5 brand share

92%

Top 20: 100%

Top-5 click share

77%

Top 20: 100%

Open market

Protexin Veterinary51%
Protexin27%
Remedime5%
Duke & Co5%
HUALIJIA4%
Zanipro3%
Open — no brand owns it (2 brands, 5%)

Demand & seasonality

Weekly Amazon search volume, last 104 weeks — -7.9% search growth over the last 90 days.

Peak months: Apr, Jun · busiest ÷ quietest = 1.8×

Open Trend

Top cat diarrhea treatment search terms

cat diarrhea treatment19K/yr -0.5%11.8% conv.
protexin for cats13K/yr -13.5%14.4% conv.
prokolin for cats10K/yr -25.2%24.3% conv.
pro kolin cats9K/yr -5.1%21.3% conv.
diarrhea relief for cats3K/yr +21.3%9.0% conv.
pro kolin advanced for cats3K/yr +2.6%26.7% conv.
pro kolin for cats2K/yr -13.8%21.8% conv.
pro-kolin for cats2K/yr -1.5%20.3% conv.

All search terms

Top cat diarrhea treatment 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 13 tracked products in this niche — three views at once, no toggling.

Top sellers

by 90-day click share

Pro-Kolin Advanced for Cats Pro-Kolin Advanced for Cats 15ml

Protexin Veterinary£9.894.5★2,542 rev

Protexin Pro-Kolin Probiotic & Prebiotic Digestive Support Paste for Dogs & Cats Fast-Acting Stool Firming Formula with Kaolin Vet Recommended Ideal for Cats & Small Dogs 15ml Syringe

Protexin£8.384.6★15,379 rev

Protexin Pro-Kolin Probiotic & Prebiotic Digestive Support Paste for Dogs & Cats Fast-Acting Gut Soothing Formula with Kaolin Helps Firm Stools Vet Recommended 30ml Syringe

Protexin£11.854.6★15,379 rev

Remedime Probiotic & Prebiotic Paste to Sooth the Gut Lining and Firm-up Faeces - For Dogs & Cats | 15ml

Remedime£8.384.6★1,162 rev

Duke & Co Dog & Cat Diarrhoea Tablets

Duke & Co£5.194.4★986 rev

Newest

by launch date

Probiotics for Cats 3-in-1 Cat Probiotics with Prebiotic and Enzymes Cat Diarrhea Treatmen Supplement - Support Gut Health Diarrhea & Constipation Relief for All Breed Size Age Bacon Flavor 60ml

HUALIJIA£7.11106 rev

10mo ago

Zanipro Cat Probiotics Paste Diarrhea Treatment Catnip Flavour 15ml

Zanipro£10.52157 rev

1y ago

Remedime Probiotic & Prebiotic Paste to Sooth the Gut Lining and Firm-up Faeces - For Dogs & Cats | 15ml

Remedime£8.381,162 rev

2y ago

NBF Lanes | Carobin Pet Forte for Dogs and Cats Supports the Reduction of Acute Intestinal Absorption Disorders Acute Diarrhoea and Recovery

NBF Lanes£17.001,928 rev

3y ago

Pro-Kolin Advanced for Cats Pro-Kolin Advanced for Cats 15ml

Protexin Veterinary£9.892,542 rev

7y ago

What buyers say about cat diarrhea treatment

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

What buyers love

Value For Money18%

“Excellent price”

Quality-Overall15%

“After seeing the positive reviews”

Advertised Vs Actual Product11%

“Does what it says on the box”

Pet Friendly10%

“Used this for my dogs its good”

Ease Of Use9%

“Easy to use”

Taste-Overall6%

“My cats love the taste”

Flavor5%

“She loves the taste too a big plus”

Soothing/Teething3%

“Great for dogs tummy upsets”

Size-Overall3%

“The size is good”

Ease Of Chewing/Swallowing3%

“Easy to administer in food”

What buyers complain about

Value For Money20%

“expensive”

Indigestion12%

“My Sprocker had been suffering from diarrhea for two days”

Functionality-Overall10%

“Doesn't Work”

Color6%

“Green/grey colour that is a bit gritty”

Taste-Overall6%

“Dog seems to hate the taste”

Advertised Vs Actual Product4%

“only awarding 1 star due Amazon sending something that doesn't match the website pictures as shown”

Ingredients-Overall4%

“I wish I had checked the full ingredients before using”

Stale/Rotten/Spoiled2%

“Very old”

Defective Material/Parts2%

“Tube was broken so not been able to use it”

Thickness2%

“is a brown thick paste”

Top return reasons

Functionality-Overall52%

Defective Material/Parts14%

Advertised Vs Actual Product10%

Size-Overall5%

Material Quality5%

Moist/Dry5%

Ease Of Use5%

Hard Feel2%

Adhesion/Stickiness2%

Common questions

Is cat diarrhea treatment profitable to sell on Amazon United Kingdom?: The niche generates £145K/yr across 13 tracked products. 1 of 1 products launched in the last 360 days are still selling. 90-day search growth is -7.9%. Flapen's verdict: Skip it (43/100).
How competitive is the cat diarrhea treatment niche?: 8 brands and 34 sellers compete. The top 5 products take 77% of clicks and top 5 brands hold 92% of demand.
What do buyers complain about in cat diarrhea treatment?: Top complaints mined from reviews: Value For Money, Indigestion, Functionality-Overall. The return rate is 0.1%.
When does demand for cat diarrhea treatment peak?: Demand peaks in Apr–Jun; the busiest month runs 1.8× the quietest.
What does it cost to enter the cat diarrhea treatment niche?: Listings span £3.61–£25.69; the average listing price is £11.34 (sweet spot $15–$100). The average incumbent carries 4,570 reviews — the moat a new listing must climb.