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Respiratory Care Cat Allergy & Immune System Supplements

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Pet Honesty Dual Texture Chicken Flavored Immune Support Lysine Chews for Cats, 3.7-oz pouch slide 1 of 9
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Pet Honesty Dual Texture Chicken Flavored Immune Support Lysine Chews for Cats, 3.7-oz pouch

Rated 4.3 out of 5 stars
886
$15.99 Chewy Price
($4.33/oz) Price per Unit
Autoship Price

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

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Vetoquinol Viralys Powder Immune Supplement for Cats, 3.5-oz slide 1 of 7
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Vetoquinol Viralys Powder Immune Supplement for Cats, 3.5-oz

Rated 4.6 out of 5 stars
2,207
$31.99 Chewy Price
($9.14/oz) Price per Unit
Autoship Price

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

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Felisyl L-Lysine Immune & Respiratory Support Salmon Flavored Gel for Cats & Kittens, 5-oz tube slide 1 of 9
Felisyl L-Lysine Immune & Respiratory Support Salmon Flavored Gel for Cats & Kittens, 5-oz tube slide 2 of 9
Felisyl L-Lysine Immune & Respiratory Support Salmon Flavored Gel for Cats & Kittens, 5-oz tube slide 3 of 9
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Felisyl L-Lysine Immune & Respiratory Support Salmon Flavored Gel for Cats & Kittens, 5-oz tube slide 5 of 9
Felisyl L-Lysine Immune & Respiratory Support Salmon Flavored Gel for Cats & Kittens, 5-oz tube slide 6 of 9
Felisyl L-Lysine Immune & Respiratory Support Salmon Flavored Gel for Cats & Kittens, 5-oz tube slide 7 of 9
Felisyl L-Lysine Immune & Respiratory Support Salmon Flavored Gel for Cats & Kittens, 5-oz tube slide 8 of 9
Felisyl L-Lysine Immune & Respiratory Support Salmon Flavored Gel for Cats & Kittens, 5-oz tube slide 9 of 9
Felisyl L-Lysine Immune & Respiratory Support Salmon Flavored Gel for Cats & Kittens, 5-oz tube slide 1 of 9
Felisyl L-Lysine Immune & Respiratory Support Salmon Flavored Gel for Cats & Kittens, 5-oz tube slide 2 of 9
Felisyl L-Lysine Immune & Respiratory Support Salmon Flavored Gel for Cats & Kittens, 5-oz tube slide 3 of 9
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Felisyl L-Lysine Immune & Respiratory Support Salmon Flavored Gel for Cats & Kittens, 5-oz tube slide 5 of 9
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Felisyl L-Lysine Immune & Respiratory Support Salmon Flavored Gel for Cats & Kittens, 5-oz tube slide 1 of 9
Felisyl L-Lysine Immune & Respiratory Support Salmon Flavored Gel for Cats & Kittens, 5-oz tube slide 2 of 9
Felisyl L-Lysine Immune & Respiratory Support Salmon Flavored Gel for Cats & Kittens, 5-oz tube slide 3 of 9
Felisyl L-Lysine Immune & Respiratory Support Salmon Flavored Gel for Cats & Kittens, 5-oz tube slide 4 of 9
Felisyl L-Lysine Immune & Respiratory Support Salmon Flavored Gel for Cats & Kittens, 5-oz tube slide 5 of 9
Felisyl L-Lysine Immune & Respiratory Support Salmon Flavored Gel for Cats & Kittens, 5-oz tube slide 6 of 9
Felisyl L-Lysine Immune & Respiratory Support Salmon Flavored Gel for Cats & Kittens, 5-oz tube slide 7 of 9
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Felisyl L-Lysine Immune & Respiratory Support Salmon Flavored Gel for Cats & Kittens, 5-oz tube...

Rated 4.4 out of 5 stars
648
$18.99 Chewy Price
($3.80/oz) Price per Unit
$19.99 List Price
Autoship Price

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

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NOW Pets L-Lysine Immune System Support Cat Supplement, 8-oz jar slide 1 of 8
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NOW Pets L-Lysine Immune System Support Cat Supplement, 8-oz jar

Rated 4.5 out of 5 stars
610
$12.49 Chewy Price
($1.57/oz) Price per Unit
$16.99 List Price
Autoship Price

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

Duralactin Feline L-lysine Cat Supplement, 32.5-mL syringe

Rated 4.2 out of 5 stars
657
$11.75 Chewy Price
($0.37/mL) Price per Unit
Autoship Price

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

VetriScience Lysine Complete Creamy Chicken Flavor Triple-Action Immune Support Supplement for ...

Rated 4.1 out of 5 stars
121
$29.00 Chewy Price
($10.55/oz) Price per Unit
$37.45 List Price
Autoship Price

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

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

Rated 4.1 out of 5 stars
278
$16.99 Chewy Price
($0.57/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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Vetoquinol Viralys Gel Immune Supplement for Cats, 5-fl oz

Rated 4.5 out of 5 stars
1,906
$25.98 Chewy Price
($5.20/fl oz) Price per Unit
$25.99 List Price
Autoship Price

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

Licks Pill-Free IMMUNITY Cat Supplement, 10 count

Rated 3.5 out of 5 stars
29
$12.99 Chewy Price
($1.30/ea) Price per Unit
Autoship Price

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

VetriScience Vetri Lysine Plus Chicken Flavored Soft Chews Immune Supplement for Cats, 180 coun...

Rated 4.1 out of 5 stars
98
$33.50 Chewy Price
($0.19/ea) Price per Unit
$34.99 List Price
Autoship Price

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

NaturVet Aller-911 Advanced Allergy Supplement for Dogs & Cats, 9-oz bag

Rated 3.9 out of 5 stars
89
$34.99 Chewy Price
($3.89/oz) Price per Unit
Autoship Price

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

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Vetoquinol Enisyl-F Lysine HCl Bites Chicken & Liver Flavored Immune Supplement for Cats, 6.35-...

Rated 3.9 out of 5 stars
751
$32.97 Chewy Price
($5.20/oz) Price per Unit
$32.99 List Price
Autoship Price

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

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

Rated 4.4 out of 5 stars
402
$46.46 Chewy Price
($0.47/mL) Price per Unit
$46.49 List Price
Autoship Price

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

Fera Pets Lysine Immune Powdered Supplement for Cats, 2.1-oz jar

Rated 3.8 out of 5 stars
184
$29.95 Chewy Price
($14.27/oz) Price per Unit
Autoship Price

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

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

Rated 4.1 out of 5 stars
37
$21.99 Chewy Price
($6.94/oz) Price per Unit
Autoship Price

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

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

Rated 4.5 out of 5 stars
61
$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

Super Snouts Daily Defense Immune Supplement for Dogs, 5.29-oz jar

Rated 4.3 out of 5 stars
91
$43.99 Chewy Price
($8.32/oz) Price per Unit
Autoship Price

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

Under the Weather L-lysine Immune Support Chews Cat Supplement, 3.17-oz bag

Rated 2.5 out of 5 stars
13
$18.99 Chewy Price
($6.00/oz) Price per Unit
Autoship Price

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

Real Mushrooms Mushroom Immune Chews Supplement for Dogs & Cats, 60 count

Rated 4.2 out of 5 stars
68
$44.95 Chewy Price
($0.75/ea) Price per Unit
Autoship Price

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

The Petz Kitchen Graviola Powder Dog & Cat Supplement, 4-oz bag

Rated 3.3 out of 5 stars
14
$12.00 Chewy Price
($3.00/oz) Price per Unit
Autoship Price

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

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

Rated 3.8 out of 5 stars
5
$44.99 Chewy Price
($0.30/ea) Price per Unit
Autoship Price

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

Real Mushrooms Turkey Tail Capsule Immune Supplement for Dogs & Cats, 90 count

Rated 4.2 out of 5 stars
116
$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

Natura Petz Organics Life's An Itch Turkey Flavored Powder Allergy Supplement for Cats, 4-oz ti...

Rated 3.8 out of 5 stars
9
$29.99 Chewy Price
($7.50/oz) Price per Unit
Autoship Price

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

NaturVet L-Lysine Salmon & Bacon Flavored Immunity Supplement for Cats, 60 count

Rated 2.6 out of 5 stars
162
$12.97 Chewy Price
($0.22/ea) Price per Unit
$16.99 List Price
Autoship Price

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

Natura Petz Organics Life's An Itch! Cat Supplement, 90 count

Rated 3.1 out of 5 stars
14
$29.99 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

Out of Stock

Optixcare L-Lysine Cat Chews, 60 count bag

Rated 4.3 out of 5 stars
312

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

Out of Stock

Strawfield Pets L-Lysine Immune Support Cat Supplement, 7-oz jar

Rated 4.3 out of 5 stars
318

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

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