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10 Best boost dog immune system supplements of 2025
Save up to 45% off
Best Choice1
VetSmart FormulasCritical Immune Defense for Dogs & Cats; Supports Normal Cell Growth - Turkey Tail, Reishi, Shiitake and Maitake Mushroom Formula with Patented White Turmeric Root Extract - 30-Day Supply
9.8Exceptional
Our Rating
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Value for Money2
Nutrition StrengthNutrition Strength Vitamin E for Dogs, Promote Cardiovascular Health, Support Cell Membranes, Vitamin E Complex to Boost Dog Immune System Plus Zinc, Selenium, Folate, Salmon Oil, 120 Chewable Tablets
9.7Exceptional
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3
Only Natural PetOnly Natural Pet Mushroom Blend Immune System Support Supplement for Dogs - Boost Healthy Cellular, Digestive, & Liver Function - Multivitamin Beta-Glucan & Antioxidant - Bacon Flavor 60 Soft Chews
9.6Exceptional
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4
Natural Dog CompanyNatural Dog Company Aller-Immune Chews (90 Pieces), Turkey Flavor, Canine-Specific Probiotics, Allergy Immune Supplement for Dogs, Boosts Immune System, Antioxidant, Itch Relief for Dogs
9.3Excellent
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5
NOW FoodsNOW Foods Pet Health, Immune Support Supplement, Formulated for Cats & Dogs, NASC Certified, 90 Chewable Tablets
45% Off9.2Excellent
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Standard Process Inc.Standard Process Canine Immune System Support - Immune Support Supplement for Dogs - Powder Canine Supplement Aids Overall Health & Wellness - Immunity Support Supplement with Zinc & Kelp - 30 g
9.0Excellent
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7
Only Natural PetOnly Natural Pet Immune System Strengthener Supplement for Dogs - Boost Healthy Cellular, Digestive, & Liver Function - Multivitamin Beta-Glucan & Antioxidant - 90 Capsules
8.9Very Good
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8
HAPPY GO HEALTHYHappy Go Healthy Daily Wellness Supplements for Dogs | Boosts Immune System Support and Digestive Gut Health for Dogs and Puppies | All Natural Ingredients Tasty Kibble Dog Food Topper | 21 Count Pack
8.8Very Good
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VETIQVetIQ Multivitamin Supplement for Dogs, Supports Active Brain Function, Immune System, and Digestive System, Hickory Smoke Flavored Dog Multivitamin, Made in The USA, 60 Count
14% OffKey specs-
Formulation:Multivitamin
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Dimensions:1.5 x 6.18 x 7.75 inches
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Health Benefit:Supports brain, immune, digestive
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Country of Origin:USA
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Ingredients:N/A
8.7Very Good
Our Rating
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10
Woof 'n' PurrDog Immune Support - Immune Support for Dogs - Dog Immune and Allergy Supplement - Dog Immune Booster - Dog Immune Boost - Dog Immune Support Supplement - Dog Immune Supplement - 1 fl oz
8.4Good
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