Best Cat Diarrhea Treatments 2026: According to Reviews | Chewy

Digestive upset can leave cats feeling uncomfortable and can quickly become stressful for pet parents trying to figure out what changed. Cat diarrhea treatments may help support digestive balance and stool quality in certain situations, depending on the cause and your cat's individual needs. Because diarrhea can sometimes signal a more serious health issue, it is important to contact your veterinarian if symptoms are severe, persistent, or paired with vomiting, lethargy, or appetite changes.

Our Top Picks

How we created this cat diarrhea treatment list

We leveraged input from our veterinarians and artificial intelligence to identify key considerations to help you find the best cat diarrhea treatment.
We scanned thousands of customer reviews and ratings and scored each product based on its performance against each of the key considerations. We then considered how popular a product is with Chewy customers and combined that with its key consideration scores to create the list of the best cat diarrhea treatments.

Key cat diarrhea treatment considerations

Ease of Use

Effectiveness

Ingredients

Speed of Relief

1
Vetoquinol Pro-Pectalin Diarrhea Supplement for Dogs & Cats, 30-cc syringe
Vetoquinol Pro-Pectalin Diarrhea Supplement for Dogs & Cats, 30-cc syringe
Vetoquinol Pro-Pectalin Diarrhea Supplement for Dogs & Cats, 30-cc syringe
Vetoquinol Pro-Pectalin Diarrhea Supplement for Dogs & Cats, 30-cc syringe
Vetoquinol Pro-Pectalin Diarrhea Supplement for Dogs & Cats, 30-cc syringe
Vetoquinol Pro-Pectalin Diarrhea Supplement for Dogs & Cats, 30-cc syringe
Vetoquinol Pro-Pectalin Diarrhea Supplement for Dogs & Cats, 30-cc syringe
Vetoquinol Pro-Pectalin Diarrhea Supplement for Dogs & Cats, 30-cc syringe

Vetoquinol Pro-Pectalin Diarrhea Supplement for Dogs & Cats, 30-cc syringe

Rated 4.6 out of 5 stars
2,450
$26.99 Chewy Price
Promo, New Customers Only: Spend $49+, get $25 eGift Card

Our ratings

Ease of Use

4.5/5
Great

Effectiveness

4.5/5
Great

Ingredients

4.4/5
Great

Speed of Relief

4.5/5
Great

Is this cat diarrhea treatment right for my pet?

Breed Size

All Breeds

Lifestage

All Lifestages, Adult

Top Ingredients

Active Per Ml: Kaolin 0.6 G, Pectin 0.025 G, Direct-Fed Microbials 0.2 Billion Cfu (Enterococcus Faecium) Kaolin, Soy Oil, Pectin

Health Feature

Digestive Health
2
Endosorb Medication for Digestive Issues & Diarrhea for Dogs & Cats, 1.5-g, 500 tablets
Endosorb Medication for Digestive Issues & Diarrhea for Dogs & Cats, 1.5-g, 500 tablets
Endosorb Medication for Digestive Issues & Diarrhea for Dogs & Cats, 1.5-g, 500 tablets
Endosorb Medication for Digestive Issues & Diarrhea for Dogs & Cats, 1.5-g, 500 tablets

Endosorb Medication for Digestive Issues & Diarrhea for Dogs & Cats, 1.5-g, 500 tablets

Rated 4.6 out of 5 stars
456
$125.85 Chewy Price
($0.26/ea)
Promo, New Customers Only: Spend $49+, get $25 eGift Card

Our ratings

Ease of Use

4.5/5
Great

Effectiveness

4.5/5
Great

Ingredients

4.5/5
Great

Speed of Relief

4.5/5
Great

Is this cat diarrhea treatment right for my pet?

Breed Size

All Breeds

Lifestage

All Lifestages, Adult

Top Ingredients

Activated Attapulgite with Roasted Powdered Carob Pulp, Citrus Pectin, Magnesium Trisilicate, Colloidal Aluminum Silicate (Hydrated) with Artificial Color and Base

Health Feature

Digestive Health
3
HomeoPet Digestive Upsets Homeopathic Medicine for Digestive Issues for Birds, Cats, Dogs & Small Pets, 450 drops
HomeoPet Digestive Upsets Homeopathic Medicine for Digestive Issues for Birds, Cats, Dogs & Small Pets, 450 drops
HomeoPet Digestive Upsets Homeopathic Medicine for Digestive Issues for Birds, Cats, Dogs & Small Pets, 450 drops
HomeoPet Digestive Upsets Homeopathic Medicine for Digestive Issues for Birds, Cats, Dogs & Small Pets, 450 drops
HomeoPet Digestive Upsets Homeopathic Medicine for Digestive Issues for Birds, Cats, Dogs & Small Pets, 450 drops
HomeoPet Digestive Upsets Homeopathic Medicine for Digestive Issues for Birds, Cats, Dogs & Small Pets, 450 drops
HomeoPet Digestive Upsets Homeopathic Medicine for Digestive Issues for Birds, Cats, Dogs & Small Pets, 450 drops
HomeoPet Digestive Upsets Homeopathic Medicine for Digestive Issues for Birds, Cats, Dogs & Small Pets, 450 drops

HomeoPet Digestive Upsets Homeopathic Medicine for Digestive Issues for Birds, Cats, Dogs & Small Pets, 450 drops

Rated 4.5 out of 5 stars
481
$19.49 Chewy Price
Promo, New Customers Only: Spend $49+, get $25 eGift Card

Our ratings

Ease of Use

4.5/5
Great

Effectiveness

4.4/5
Great

Ingredients

4.4/5
Great

Speed of Relief

4.4/5
Great

Is this cat diarrhea treatment right for my pet?

Breed Size

Small Breeds

Lifestage

All Lifestages, Adult

Top Ingredients

Aconitum Napellus, 200c, Aloe 6c, 30c, 200c

Special Diet

Natural
4
PetAg Pet Pectillin Anti-Diarrheal Medication for Dogs & Cats, 4-fl oz bottle
PetAg Pet Pectillin Anti-Diarrheal Medication for Dogs & Cats, 4-fl oz bottle
PetAg Pet Pectillin Anti-Diarrheal Medication for Dogs & Cats, 4-fl oz bottle
PetAg Pet Pectillin Anti-Diarrheal Medication for Dogs & Cats, 4-fl oz bottle
PetAg Pet Pectillin Anti-Diarrheal Medication for Dogs & Cats, 4-fl oz bottle
PetAg Pet Pectillin Anti-Diarrheal Medication for Dogs & Cats, 4-fl oz bottle

PetAg Pet Pectillin Anti-Diarrheal Medication for Dogs & Cats, 4-fl oz bottle

Rated 4.2 out of 5 stars
582
$6.48 Chewy Price
($1.62/fl oz)
Promo, New Customers Only: Spend $49+, get $25 eGift Card

Our ratings

Ease of Use

4.4/5
Great

Effectiveness

4.4/5
Great

Ingredients

4.2/5
Great

Speed of Relief

4.2/5
Great

Is this cat diarrhea treatment right for my pet?

Breed Size

All Breeds

Lifestage

All Lifestages, Adult

Top Ingredients

Active Ingredients per Teaspoon: Kaolin 8.0%, Inactive Ingredients: Calcium Amino Acid Chelate, Glycerin, Lactic Acid, Magnesium Amino Acid Chelate

Health Feature

Digestive Health
5
Vetoquinol Pro-Pectalin Diarrhea Supplement for Dogs & Cats, 60 count
Vetoquinol Pro-Pectalin Diarrhea Supplement for Dogs & Cats, 60 count
Vetoquinol Pro-Pectalin Diarrhea Supplement for Dogs & Cats, 60 count
Vetoquinol Pro-Pectalin Diarrhea Supplement for Dogs & Cats, 60 count
Vetoquinol Pro-Pectalin Diarrhea Supplement for Dogs & Cats, 60 count
Vetoquinol Pro-Pectalin Diarrhea Supplement for Dogs & Cats, 60 count
Vetoquinol Pro-Pectalin Diarrhea Supplement for Dogs & Cats, 60 count
Vetoquinol Pro-Pectalin Diarrhea Supplement for Dogs & Cats, 60 count

Vetoquinol Pro-Pectalin Diarrhea Supplement for Dogs & Cats, 60 count

Rated 4.6 out of 5 stars
1,813
$29.99 Chewy Price
($0.50/ea)
Promo, New Customers Only: Spend $49+, get $25 eGift Card

Our ratings

Ease of Use

4.4/5
Great

Effectiveness

4.5/5
Great

Ingredients

4.5/5
Great

Speed of Relief

4.3/5
Great

Is this cat diarrhea treatment right for my pet?

Breed Size

All Breeds

Lifestage

All Lifestages, Adult

Top Ingredients

Active Per Tablet: Kaolin 1.00 G, Pectin 50 MG Direct-Fed Microbials (Enterococcus Faecium) 0.6 Billion Cfu , Inactive Ingredients: Artificial Beef Flavor, Brewers Yeast, Dicalcium Phosphate

Health Feature

Digestive Health
6
Van Beek Natural Science Diagel for Digestive Issues for Cats, 1-ml

Van Beek Natural Science Diagel for Digestive Issues for Cats, 1-ml

Rated 4.6 out of 5 stars
91
$26.36 Chewy Price
Promo, New Customers Only: Spend $49+, get $25 eGift Card

Our ratings

Ease of Use

4.6/5
Excellent

Effectiveness

4.7/5
Excellent

Ingredients

4.4/5
Great

Speed of Relief

4.5/5
Great

Is this cat diarrhea treatment right for my pet?

Lifestage

Kitten

Top Ingredients

Active Ingredients: Chamazulene., Inactive Ingredients: Carob, Cranberry Powder, Microencapsulated Bead Agents, Miglyol

Special Diet

Natural

Health Feature

Digestive Health
7
VetriScience Fast Balance G.I. Paste Medication for Digestive Issues for Cats & Dogs, 60-cc
VetriScience Fast Balance G.I. Paste Medication for Digestive Issues for Cats & Dogs, 60-cc
VetriScience Fast Balance G.I. Paste Medication for Digestive Issues for Cats & Dogs, 60-cc
VetriScience Fast Balance G.I. Paste Medication for Digestive Issues for Cats & Dogs, 60-cc
VetriScience Fast Balance G.I. Paste Medication for Digestive Issues for Cats & Dogs, 60-cc
VetriScience Fast Balance G.I. Paste Medication for Digestive Issues for Cats & Dogs, 60-cc
VetriScience Fast Balance G.I. Paste Medication for Digestive Issues for Cats & Dogs, 60-cc
VetriScience Fast Balance G.I. Paste Medication for Digestive Issues for Cats & Dogs, 60-cc
VetriScience Fast Balance G.I. Paste Medication for Digestive Issues for Cats & Dogs, 60-cc

VetriScience Fast Balance G.I. Paste Medication for Digestive Issues for Cats & Dogs, 60-cc

Rated 4.4 out of 5 stars
224
$42.22 Chewy Price
Promo, New Customers Only: Spend $49+, get $25 eGift Card

Our ratings

Ease of Use

4.4/5
Great

Effectiveness

4.4/5
Great

Ingredients

4.4/5
Great

Speed of Relief

4.4/5
Great

Is this cat diarrhea treatment right for my pet?

Breed Size

All Breeds

Lifestage

All Lifestages, Adult

Top Ingredients

Active Ingredients: (Per 10 Cc Serving) Pantothenic Acid 10.5 mg, Pyridoxine HCl (Vitamin B6) 2.5 mg, Riboflavin (Vitamin B2) 1.0 mg, Mixed Lactic Acid Bacteria 1.3 X 10^7 Cfu Saccharomyces Cerevisiae 3.4 X 10^6 Cfu Bacillus Subtilis 3.8 X 10^5 Cfu Aspergillus Oryzae 1.3 X 10^5 Cfu., Inactive Ingredients: Carrageenan

Special Diet

Human-Grade
8
HomeoPet Digestive Upsets Medication for Digestive Issues for Cats
HomeoPet Digestive Upsets Medication for Digestive Issues for Cats
HomeoPet Digestive Upsets Medication for Digestive Issues for Cats
HomeoPet Digestive Upsets Medication for Digestive Issues for Cats
HomeoPet Digestive Upsets Medication for Digestive Issues for Cats
HomeoPet Digestive Upsets Medication for Digestive Issues for Cats
HomeoPet Digestive Upsets Medication for Digestive Issues for Cats
HomeoPet Digestive Upsets Medication for Digestive Issues for Cats

HomeoPet Digestive Upsets Medication for Digestive Issues for Cats

Rated 4.4 out of 5 stars
577
$19.49 Chewy Price
Promo, New Customers Only: Spend $49+, get $25 eGift Card

Our ratings

Ease of Use

4.2/5
Great

Effectiveness

4.3/5
Great

Ingredients

4.3/5
Great

Speed of Relief

4.3/5
Great

Is this cat diarrhea treatment right for my pet?

Lifestage

All Lifestages, Adult

Top Ingredients

Veratrum Album, Argentum Nitricum, Colocynthis, Pulsatilla, Nigricans

Special Diet

Natural

Health Feature

Digestive Health
9
Tomlyn Firm Fast Medication for Digestive Issues & Diarrhea for Cats & Dogs, 15-cc syringe

Tomlyn Firm Fast Medication for Digestive Issues & Diarrhea for Cats & Dogs, 15-cc syringe

Rated 4.2 out of 5 stars
138
$17.97 Chewy Price
Promo, New Customers Only: Spend $49+, get $25 eGift Card

Our ratings

Ease of Use

4.1/5
Great

Effectiveness

4.1/5
Great

Ingredients

4.1/5
Great

Speed of Relief

4.2/5
Great

Is this cat diarrhea treatment right for my pet?

Breed Size

All Breeds

Lifestage

All Lifestages, Adult

Top Ingredients

Active Ingredients (Syringe): Kaolin 0.6g, Pectin 25mg, Enterococcus Faecium 200, 000, 000 million CFU

Health Feature

Digestive Health
10
Innovative Pet Lab Leaky Dog & Cat Gut Check Kit
Innovative Pet Lab Leaky Dog & Cat Gut Check Kit
Innovative Pet Lab Leaky Dog & Cat Gut Check Kit
Innovative Pet Lab Leaky Dog & Cat Gut Check Kit
Innovative Pet Lab Leaky Dog & Cat Gut Check Kit
Innovative Pet Lab Leaky Dog & Cat Gut Check Kit
Innovative Pet Lab Leaky Dog & Cat Gut Check Kit
Innovative Pet Lab Leaky Dog & Cat Gut Check Kit
Innovative Pet Lab Leaky Dog & Cat Gut Check Kit

Innovative Pet Lab Leaky Dog & Cat Gut Check Kit

Rated 4.8 out of 5 stars
20
$104.30 Chewy Price
Promo, Special offer - price as marked

Our ratings

Ease of Use

4.7/5
Excellent

Effectiveness

4.4/5
Great

Ingredients

4.7/5
Excellent

Speed of Relief

4.7/5
Excellent

Is this cat diarrhea treatment right for my pet?

Breed Size

All Breeds

Lifestage

All Lifestages, Adult

Health Feature

Senior Care, Digestive Health, Immune Support, Itch & Redness Remedy...