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- Best Allergy Supplements for Dogs 2025
Written by Adam Lee-Smith
Veterinary reviewed by:
Published: 04/26/2025, edited: 04/26/2025
The Wag! team conducts independent research and consults pet experts to curate our recommendations. This content is supported by our affiliate pet partners and we may receive a commission on the links provided.
- Zesty Paws Allergy & Immune Bites
- Native Pet Omega-3 Fish Oil & Alaskan Salmon Oil Skin & Coat Health Supplement
- Pet Honesty Allergy Support Itchy Skin, Immune & Allergy Relief Chews
- Nordic Naturals Omega-3 Pet Liquid Supplement
- Vet's Best Allergy Supplement Soft Chews
- Pupford Allergy Supplement for Dogs
- Finn Allergy & Itch Soft Chews
- FAQ
- Salmon
Zesty Paws Allergy & Immune Bites
Why Wag! loves Zesty Paws Allergy & Immune Bites
- Supports immunity, promotes gut health, and relieves seasonal allergies
- Includes several ingredients proven to provide allergy relief, like colostrum and astragalus root
- No artificial flavors, colors, or preservatives
- Reasonably priced
Considerations & concerns
- May not be suitable for pregnant or breeding dogs
- Fussy pups might not like the texture of soft chews — you may need to hide it in their food
Image sourced from Chewy. Copyright Zesty Paws.
Native Pet Skin & Coat Health Supplement
Why Wag! loves Native Pet Skin & Coat Health Supplement
- Rich in fatty acids and biotin to improve skin and coat quality
- Made with all-natural human-grade ingredients
- As a liquid meal topper, it's easy to add to your dog's diet
- Most reviewers say their dogs loved the taste
- Very affordable
Considerations & concerns
- No ingredients that actively combat seasonal or environmental allergies by balancing histamine levels
- Has a shelf life of around 2 years
Image sourced from Chewy. Copyright Native Pet.
- Salmon
- Peanut butter
- Chicken (max strength)
Pet Honesty Allergy Support Chews
Why Wag! loves Pet Honesty Allergy Support Chews
- Rich in active allergy-fighting ingredients like quercetin, colostrum, astragalus root, and turmeric
- Formulated by a PhD animal nutritionist
- Packaging is 100% recycled
- Reasonably priced
Considerations & concerns
- The top ingredient is brewer's yeast, which is a low-quality grain
- Active ingredients may cause stomach upset initially for a couple of days
Image sourced from Chewy. Copyright Pet Honesty.
- Medium and Large Dogs
- Large and Giant Dogs
Nordic Naturals Omega-3 Pet Liquid Supplement
Why Wag! loves Nordic Naturals Omega-3 Pet Liquid Supplement
- Made with just two ingredients — perfect for sensitive stomachs
- Rich in vitamin E, which boosts the immune system
- Suitable for cats and dogs
Considerations & concerns
- Made almost completely from fish oil - no anti-inflammatory or histamine-balancing ingredients
- Refrigerate and use within 3 months of opening
Image sourced from Chewy. Copyright Nordic Naturals.
Vet's Best Allergy Supplement Soft Chews
Why Wag! loves Vet's Best Allergy Supplement Soft Chews
- Includes uncommon ingredients beneficial for allergies like nettle leaf powder, ocean kelp, perilla seed powder, and citrus bioflavonoid complex
- Backed up with quercetin, vitamin E, and biotin, which are common in many allergy supplements for dogs
- Free from artificial colors, flavors, wheat, corn, and gluten
Considerations & concerns
- Only available in chicken flavor
- Pricier per chew than alternatives on this list
Image sourced from Chewy. Copyright Compana Pet Brands.
Pupford Allergy Supplement for Dogs
Why Wag! loves Pupford Allergy Supplement for Dogs
- Rich in active ingredients that alleviate symptoms of allergies, like turmeric, quercetin, and MSM
- Made from non-GMOs and without artificial colors or additives
- Rich in antioxidants to support gut health
- Budget-friendly
Considerations & concerns
- Suitable for ages 6 months and over
- Only available in salmon flavor
Image sourced from Chewy. Copyright Pupford.
Finn Allergy & Itch Soft Chews
Why Wag! loves Finn Allergy & Itch Soft Chews
- Rich in powerful probiotics like FOS and Bacillus coagulans
- Features ingredients proven to help with allergy symptoms like colostrum, quercetin, bromelain, and wild Alaskan fish oil
- No artificial flavors, artificial colors, grains, or palm oil
Considerations & concerns
- Some reviewers commented their dogs refused to eat these chews
- It's recommended that large breeds take four chews a day, so a container won't last long