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Cat Immune & Allergy Supplements

Updated July 11, 2026

377 products with supplement facts and ingredients.

These 377 cat immune & allergy supplements come from 60 brands, and 323 include a supplement facts panel (149 with parsed active-ingredient amounts).

Cat Joint Supplements (523)Cat Digestive Supplements (389)Cat Calming Supplements (233)Cat Skin & Coat Supplements (256)Cat Immune & Allergy Supplements (377)Cat Multivitamin Supplements (176)Cat Urinary Supplements (164)Cat Heart & Liver Supplements (192)Cat Dental Supplements (100)Cat Senior Supplements (213)Cat Stool Deterrent Supplements (8)Cat Hairball Supplements (37)Cat Supplement Chews (340)Cat Supplement Tablets (44)Cat Supplement Capsules (57)Cat Supplement Powders (143)Liquid Cat Supplements (247)Cat Supplement Gels (59)

Products Showing 265-288 of 377

ThorneVet Feline Basic Nutrients Cat Supplement

Only Natural Pet

Immune AllergyPowder

ThorneVet Hemp Tincture 1 ounce

ThorneVet

JointLiquid

ThorneVet Immune Support Formula Dog & Cat Supplement

Only Natural Pet

Immune Allergy

90 count

ThorneVet ModucareVET Dog & Cat Supplement

Only Natural Pet

Immune Allergy

90 count

ThorneVet Mushroom Medley Dog & Cat Supplement

Only Natural Pet

Immune Allergy

Throat Gold - Soothes Occasional Cough & Throat Discomfort in Cats

Pet Wellbeing

Immune Allergy

Tomlyn Immune Support L-Lysine Powder for Cats, 3.5 oz.

Tomlyn

Immune AllergyPowder

Tomlyn L-Lysine Chews, Count of 30

Tomlyn

Immune AllergyChew

30 count

Tomlyn L-Lysine Immune Support Chicken and Fish Flavored Powder for Cats, 3.5 oz.

Vetoquinol

Immune AllergyPowder

Tomlyn L-Lysine Immune Support Fish-Flavored Chews for Cats, 30-count

Vetoquinol

Immune AllergyChew

30 count

Tomlyn L-Lysine Immune Support Gel for Cats, 5 oz.

Tomlyn

Immune AllergyGel

Tomlyn L-Lysine Immune Support Maple-Flavored Gel for Cats, 5 oz

Vetoquinol

Immune AllergyGel

Tomlyn Loose Stool Remedy Gel for Dogs & Cats, 15 ml.

Tomlyn

DigestiveGel

Turkey Tail

Super Snouts

Immune Allergy

Turkey Tail Mushroom

Austin and Kat

Immune AllergyPowder

Turkey Tail Mushrooms | Liquid Extract

Adored Beast

Immune AllergyLiquid

TYD

Amber NaturalZ

Calming

UC-II® Collagen Advanced Joint Mobility Chewable Tablets for Dogs

NOW Pets

DigestiveGel

60 count

Under the Weather Cat Supplement - L-Lysine Powder, Immune Support, Chicken Flavor, 60 days

HomeoPet

Immune AllergyPowder

Under the Weather Cat Supplement - Pre & Probiotic Powder, Immunity & Digestive Support, 60 days

Under the Weather

DigestivePowder

Under the Weather Cat Supplement - Ready Cal High Calorie Topper, Chicken Flavor, 20 scoops

Under the Weather

CalmingPowder

Under The Weather Cat Vital Colostrum Gel - Salmon Oil, 3.2 fl oz

Under The Water

JointGel

Under the Weather Ready Cal Gel Plus with Elecytrolyes for Cats, 3.5 oz.

Under the Weather

CalmingGel

Vet IQ Multivitamin Chew for Dogs

Pet IQ

MultivitaminChew

60 count

About this data

We gather factual supplement details from public manufacturer and retailer listings and product labels. Values are shown exactly as printed on each label. Supplements are not reviewed or approved by the FDA to treat, cure, or prevent disease, and label accuracy varies by brand. Nothing here is veterinary advice, and no product listed here is endorsed. Always check with your veterinarian before starting a supplement. Product names and trademarks belong to their respective owners.

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