What is the best immune support for cats?

The best immune support for cats is a healthy diet and lifestyle, but there are many supplements you can give your cats to help boost immunity, too. Your vet may be able to recommend some good supplements for your kitty, or you can find immune supplements formulated to target specific health issues your cat is having. Chewy has a great selection of immune supplements for cats, including cat allergy supplements, supplements that help cats fighting infections, calming supplements, digestive supplements and more.

What can I give my cat for allergies?

You can give your cat a variety of things for allergies, but you should consult with your vet to get the best guidance and rule out serious health problems first. Depending on what kind of allergies your cat has, your vet may recommend a skin and coat allergy supplement for cats, a respiratory supplement for cats, or an immune supplement with L-lysine, probiotics or other immune-boosting compounds.

How can I boost my cat's immune system?

You can boost your cat's immune system by feeding a healthy diet, encouraging healthy exercise and minimizing stress that can wear your cat's natural defenses down. Cat immune supplements are another way to give your cat's immune system a healthy boost, and there are many types to choose from. Talk to your vet about what immune supplements might be best for your cat and check out the wide range of choices available on our site.

Do cats actually get seasonal allergies?

Many cats do actually get seasonal allergies, and allergies can be as unpleasant for felines as they are for us! The good news is that there are many ways to help cats with seasonal allergies, including medicines and antihistamines prescribed by your vet and over-the-counter cat allergy supplements.

Allergy Supplements & Immune Support for Cats - Page 2 (Free Shipping)

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Petsmont Buddy Guard Mushroom Powder Immune Support Supplement for Dogs & Cats, 2.12-oz slide 2 of 6

Petsmont Buddy Guard Mushroom Powder Immune Support Supplement for Dogs & Cats, 2.12-oz slide 3 of 6

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Petsmont Buddy Guard Mushroom Powder Immune Support Supplement for Dogs & Cats, 2.12-oz

Rated 4.2 out of 5 stars

115

$42.95 Chewy Price

($20.26/oz) Price per Unit

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Under the Weather L-lysine Powder Cat Supplement, 3.17-oz bag slide 2 of 4

Under the Weather L-lysine Powder Cat Supplement, 3.17-oz bag slide 3 of 4

Under the Weather L-lysine Powder Cat Supplement, 3.17-oz bag slide 4 of 4

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Under the Weather L-lysine Powder Cat Supplement, 3.17-oz bag

Rated 4.1 out of 5 stars

18

$21.99 Chewy Price

($6.94/oz) Price per Unit

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Free 1-3 day delivery on first-time orders over $35
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VetriScience Veterinary Strength Allergy & Itch Support Derma Strength Pro Duck Flavored Soft Chew Allergy Supplement for Cats & Dogs, 90 count slide 1 of 9

VetriScience Veterinary Strength Allergy & Itch Support Derma Strength Pro Duck Flavored Soft C...

Rated 3.8 out of 5 stars

20

$40.14 Chewy Price

($0.45/ea) Price per Unit

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NaturVet Mushroom Max Immunity Hickory Smoked Bacon Flavored Supplement for Dogs & Cats, 120 count slide 2 of 6

NaturVet Mushroom Max Immunity Hickory Smoked Bacon Flavored Supplement for Dogs & Cats, 120 count slide 3 of 6

NaturVet Mushroom Max Immunity Hickory Smoked Bacon Flavored Supplement for Dogs & Cats, 120 count slide 4 of 6

NaturVet Mushroom Max Immunity Hickory Smoked Bacon Flavored Supplement for Dogs & Cats, 120 count slide 5 of 6

NaturVet Mushroom Max Immunity Hickory Smoked Bacon Flavored Supplement for Dogs & Cats, 120 count slide 6 of 6

NaturVet Mushroom Max Immunity Hickory Smoked Bacon Flavored Supplement for Dogs & Cats, 120 co...

Rated 4.5 out of 5 stars

288

$44.77 Chewy Price

($0.38/ea) Price per Unit

$54.99 List Price

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Natura Petz Organics GET OVIR IT MAX Master Blend Broad Spectrum Plant Anti Viral Anti Bacteria...

Rated 4.2 out of 5 stars

41

$34.99 Chewy Price

($0.39/ea) Price per Unit

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Free 1-3 day delivery on first-time orders over $35
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Vetoquinol Enisyl-F Paste Immune Supplement for Cats, 100 mL

Rated 4.3 out of 5 stars

350

$46.47 Chewy Price

($0.47/mL) Price per Unit

$46.49 List Price

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Free 1-3 day delivery on first-time orders
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BIXBI Organic Pet Superfood Immunity Daily Dog & Cat Supplement, 2.12-oz jar

Rated 4.6 out of 5 stars

91

$19.99 Chewy Price

($9.43/oz) Price per Unit

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Free 1-3 day delivery on first-time orders over $35
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HomeoPet Skin & Itch Dog, Cat, Bird & Small Animal Supplement, 450 drops

Rated 3.9 out of 5 stars

281

$17.99 Chewy Price

$19.99 List Price

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Free 1-3 day delivery on first-time orders over $35
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Rx Vitamins Immuno Liquid Immune Supplement for Cats & Dogs, 4-fl oz bottle

Rated 4.3 out of 5 stars

33

$36.39 Chewy Price

($9.10/fl oz) Price per Unit

$45.49 List Price

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Free 1-3 day delivery on first-time orders
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NOW Pets Pet Allergy Dog & Cat Supplement, 75 count

Rated 4 out of 5 stars

68

$20.16 Chewy Price

($0.27/ea) Price per Unit

$33.99 List Price

Autoship Price

Free 1-3 day delivery on first-time orders over $35
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Tomlyn Immune Support Hickory Flavored Soft Chews Immune Supplement for Cats, 30 count bag

Rated 4 out of 5 stars

255

$16.99 Chewy Price

($0.57/ea) Price per Unit

Autoship Price

Free 1-3 day delivery on first-time orders over $35
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Prana Pets Immunity Blend Immune Health Liquid Cat & Dog Supplement, 2-fl oz bottle

Rated 4.7 out of 5 stars

56

$37.95 Chewy Price

($18.98/fl oz) Price per Unit

Autoship Price

Free 1-3 day delivery on first-time orders
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Pet Wellbeing Life GOLD Bacon Flavored Liquid Immune Supplement for Cats, 2-oz bottle

Rated 4.3 out of 5 stars

62

$40.95 Chewy Price

($20.48/oz) Price per Unit

Autoship Price

Free 1-3 day delivery on first-time orders
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VetriScience Extra Strength Lysine Immunity Health Chicken Flavored Chews Supplement for Cats, ...

Rated 4.4 out of 5 stars

16

$27.49 Chewy Price

($0.23/ea) Price per Unit

Autoship Price

Free 1-3 day delivery on first-time orders over $35
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Fera Pets Mushroom Cognitive & Immune Support Powder Supplement for Dog & Cat, 2.12-oz jar

Rated 4.5 out of 5 stars

279

$34.95 Chewy Price

($16.49/oz) Price per Unit

Autoship Price

Free 1-3 day delivery on first-time orders over $35
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Natura Petz Organics VITAMIN NINJA - OMEGA 3 & 6, Super Food, Immune & Multi-Vitamin Support Ca...

$49.99 Chewy Price

($0.34/ea) Price per Unit

Autoship Price

Free 1-3 day delivery on first-time orders
Free 365-day returns

Animal Essentials Super Immune Support Dog & Cat Supplement, 2-fl oz bottle

Rated 4.4 out of 5 stars

77

$26.20 Chewy Price

($13.10/fl oz) Price per Unit

$34.95 List Price

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Free 1-3 day delivery on first-time orders over $35
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The Petz Kitchen Holistic Super Food Broth Immune Support Beef Flavor Concentrate Powder Beef F...

Rated 4.7 out of 5 stars

3

$24.95 Chewy Price

($5.55/oz) Price per Unit

Autoship Price

Free 1-3 day delivery on first-time orders over $35
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Liquid-Vet Itch & Allergy Support Chicken Flavor Cat Supplement, 8-fl oz bottle

Rated 3.5 out of 5 stars

166

$14.10 Chewy Price

($1.77/fl oz) Price per Unit

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Free 1-3 day delivery on first-time orders over $35
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Earth Animal Apothecary Allergy & Skin Herbal Liquid Allergy Supplement for Dogs & Cats, 2-fl o...

Rated 4 out of 5 stars

76

$20.99 Chewy Price

($10.50/fl oz) Price per Unit

Autoship Price

Free 1-3 day delivery on first-time orders over $35
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Bark and Whiskers Spirulina Superfood Tablets Dog & Cat Supplement, 180 count

Rated 4.5 out of 5 stars

51

$19.97 Chewy Price

($0.12/ea) Price per Unit

$24.99 List Price

Autoship Price

Free 1-3 day delivery on first-time orders over $35
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Super Snouts Turkey Tail Powder Immune Supplement for Dogs & Cats, 2.64-oz jar

Rated 4.4 out of 5 stars

56

$26.99 Chewy Price

($10.23/oz) Price per Unit

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Free 1-3 day delivery on first-time orders over $35
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Pet Health Pharma Trulysine & Immune Support Oral Powder Cat Supplement, 8-oz bottle

Rated 4.5 out of 5 stars

30

$33.89 Chewy Price

($4.24/oz) Price per Unit

Autoship Price

Free 1-3 day delivery on first-time orders over $35
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Pet Wellbeing Immune SURE Bacon Flavored Liquid Immune Supplement for Dogs & Cats, 2-oz bottle

Rated 3.8 out of 5 stars

10

$32.95 Chewy Price

($16.48/oz) Price per Unit

$39.95 List Price

Autoship Price

Free 1-3 day delivery on first-time orders over $35
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Wholistic Pet Organics Pure Colostrum Immune Balance Dog & Cat, 2-oz jar

Rated 4.2 out of 5 stars

80

$39.03 Chewy Price

($19.52/oz) Price per Unit

$39.99 List Price

Autoship Price

Free 1-3 day delivery on first-time orders
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Felisyl Chicken Flavored Soft Chew Immune Supplement for Cats, 60 count

Rated 2.9 out of 5 stars

57

$17.50 Chewy Price

($0.30/ea) Price per Unit

$17.99 List Price

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Free 1-3 day delivery on first-time orders over $35
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Natura Petz Organics LIFE'S AN ITCH!* Respiratory, Allergy & Skin Support* Cat Supplement, 150 ...

Rated 5 out of 5 stars

2

$44.99 Chewy Price

($0.30/ea) Price per Unit

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Rx Vitamins Immuno Capsules Immune Supplement for Cats & Dogs, 60 count

Rated 5 out of 5 stars

18

$31.49 Chewy Price

($0.53/ea) Price per Unit

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Free 1-3 day delivery on first-time orders over $35
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Licks Pill-Free SENIOR Mobility + Long-Term Health Support Senior Cat Supplement, 10 count

Rated 3.6 out of 5 stars

91

$12.98 Chewy Price

($1.30/ea) Price per Unit

$12.99 List Price

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Liquid-Vet Itch & Allergy Support Seafood Flavor Cat Supplement, 8-fl oz bottle

Rated 3.6 out of 5 stars

88

$12.58 Chewy Price

($1.58/fl oz) Price per Unit

$14.10 List Price

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Free 1-3 day delivery on first-time orders over $35
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Animal Essentials Mushroom Defense Immune Support Dog & Cat Supplement, 1-fl oz bottle

Rated 4.5 out of 5 stars

87

$34.95 Chewy Price

($34.95/fl oz) Price per Unit

Autoship Price

Free 1-3 day delivery on first-time orders over $35
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Fera Pets Immune Goat Milk Powder Supplement for Dogs & Cats, 6.34-oz pouch

Rated 4.3 out of 5 stars

28

$29.95 Chewy Price

($4.73/oz) Price per Unit

Autoship Price

Free 1-3 day delivery on first-time orders over $35
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Animal Necessity Imuno-2865 Natural Immune Adjunctive Support Dog & Cat Supplement, 45 count

Rated 5 out of 5 stars

24

$40.00 Chewy Price

($0.89/ea) Price per Unit

Autoship Price

Free 1-3 day delivery on first-time orders
Free 365-day returns

The Petz Kitchen Moringa Leaf Powder Antioxidant Vitamin & Mineral Support Dog & Cat Supplement...

Rated 3.8 out of 5 stars

22

$9.99 Chewy Price

($2.50/oz) Price per Unit

Autoship Price

Free 1-3 day delivery on first-time orders over $35
Free 365-day returns

Real Mushrooms 5 Defenders Capsule Immune Supplement for Dogs & Cats, 90 count

Rated 4.6 out of 5 stars

36

$29.95 Chewy Price

($0.34/ea) Price per Unit

Autoship Price

Free 1-3 day delivery on first-time orders over $35
Free 365-day returns

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VetClassics CAS Options Extra Strength Immune & Antioxidant Support Dog & Cat Supplement, 120 c...

Rated 4.8 out of 5 stars

53

$71.99 Chewy Price

($0.60/ea) Price per Unit

$78.99 List Price

Autoship Price

Free 1-3 day delivery on first-time orders
Free 365-day returns

Allergy Supplements & Immune Support for Cats

Petsmont Buddy Guard Mushroom Powder Immune Support Supplement for Dogs & Cats, 2.12-oz

Under the Weather L-lysine Powder Cat Supplement, 3.17-oz bag

VetriScience Veterinary Strength Allergy & Itch Support Derma Strength Pro Duck Flavored Soft C...

NaturVet Mushroom Max Immunity Hickory Smoked Bacon Flavored Supplement for Dogs & Cats, 120 co...

Natura Petz Organics GET OVIR IT MAX Master Blend Broad Spectrum Plant Anti Viral Anti Bacteria...

Vetoquinol Enisyl-F Paste Immune Supplement for Cats, 100 mL

BIXBI Organic Pet Superfood Immunity Daily Dog & Cat Supplement, 2.12-oz jar

HomeoPet Skin & Itch Dog, Cat, Bird & Small Animal Supplement, 450 drops

Rx Vitamins Immuno Liquid Immune Supplement for Cats & Dogs, 4-fl oz bottle

NOW Pets Pet Allergy Dog & Cat Supplement, 75 count

Tomlyn Immune Support Hickory Flavored Soft Chews Immune Supplement for Cats, 30 count bag

Prana Pets Immunity Blend Immune Health Liquid Cat & Dog Supplement, 2-fl oz bottle

Pet Wellbeing Life GOLD Bacon Flavored Liquid Immune Supplement for Cats, 2-oz bottle

VetriScience Extra Strength Lysine Immunity Health Chicken Flavored Chews Supplement for Cats, ...

Fera Pets Mushroom Cognitive & Immune Support Powder Supplement for Dog & Cat, 2.12-oz jar

Natura Petz Organics VITAMIN NINJA - OMEGA 3 & 6, Super Food, Immune & Multi-Vitamin Support Ca...

Animal Essentials Super Immune Support Dog & Cat Supplement, 2-fl oz bottle

The Petz Kitchen Holistic Super Food Broth Immune Support Beef Flavor Concentrate Powder Beef F...

Liquid-Vet Itch & Allergy Support Chicken Flavor Cat Supplement, 8-fl oz bottle

Earth Animal Apothecary Allergy & Skin Herbal Liquid Allergy Supplement for Dogs & Cats, 2-fl o...

Bark and Whiskers Spirulina Superfood Tablets Dog & Cat Supplement, 180 count

Super Snouts Turkey Tail Powder Immune Supplement for Dogs & Cats, 2.64-oz jar

Pet Health Pharma Trulysine & Immune Support Oral Powder Cat Supplement, 8-oz bottle

Pet Wellbeing Immune SURE Bacon Flavored Liquid Immune Supplement for Dogs & Cats, 2-oz bottle

Wholistic Pet Organics Pure Colostrum Immune Balance Dog & Cat, 2-oz jar

Felisyl Chicken Flavored Soft Chew Immune Supplement for Cats, 60 count

Natura Petz Organics LIFE'S AN ITCH!* Respiratory, Allergy & Skin Support* Cat Supplement, 150 ...

Rx Vitamins Immuno Capsules Immune Supplement for Cats & Dogs, 60 count

Licks Pill-Free SENIOR Mobility + Long-Term Health Support Senior Cat Supplement, 10 count

Liquid-Vet Itch & Allergy Support Seafood Flavor Cat Supplement, 8-fl oz bottle

Animal Essentials Mushroom Defense Immune Support Dog & Cat Supplement, 1-fl oz bottle

Fera Pets Immune Goat Milk Powder Supplement for Dogs & Cats, 6.34-oz pouch

Animal Necessity Imuno-2865 Natural Immune Adjunctive Support Dog & Cat Supplement, 45 count

The Petz Kitchen Moringa Leaf Powder Antioxidant Vitamin & Mineral Support Dog & Cat Supplement...

Real Mushrooms 5 Defenders Capsule Immune Supplement for Dogs & Cats, 90 count

VetClassics CAS Options Extra Strength Immune & Antioxidant Support Dog & Cat Supplement, 120 c...

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