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.


Has pollen got your pup down? Or are dust mites making your mutt feel itchy? Seasonal and environmental allergies can make your dog miserable, causing flaky, inflamed, itchy skin, digestive trouble, and even breathing difficulties. 

If your dog's allergies are mild and don't require medication but are still causing discomfort, allergy supplements might be the answer. We've rounded up seven of the best allergy supplements for dogs with itchy skin, tummy troubles, and inflammation to help your barking buddy get back to their best!

Overview
Zesty Paws Allergy & Immune Bites
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Zesty Paws Allergy & Immune Bites are a triple threat — they support immunity, relieve seasonal allergies, and promote gut health. They include no artificial colors, flavors, or preservatives and are available in three tasty flavors to encourage your canine to chow down.

You'll find several active ingredients in these supplements including colostrum and astragalus root which support normal histamine levels and have anti-inflammatory properties. Probiotics like Lactobacillus acidophilus help with digestion, while fish oil is high in fatty acids, which help keep your pup's skin and coat in top condition.

One of the unique ingredients in Zesty Paws Allergy & Immune Bites is EpiCor Pets, a natural yeast with antibodies that'll boost your pup's immune system.

Available flavors


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

What pet parents say about Zesty Paws Allergy & Immune Bites

"Our German sheperd was diagnosed with an autoimmune disease. The medication was over $200 a month. We wanted to try something that wouldn't damage his kidneys and liver as medications do. Probiotics are known to heal/help immune issues. These chews worked better than the medicine. He was basically allergic to his own skin. 80 percent of his skin issues went away."

"I have a full blooded Golden Retriever and he is the absolute BEST dog with the absolute worst allergies!! I tried coconut oil, liquid salmon oil, and they both seemed to work ok but not as well as the Zesty Paws allergy vitamins. I give them to him daily, and have been for several months now and we have noticed a major difference in his scratching and chewing."

Read more reviews on Chewy.


Image sourced from Chewy. Copyright Zesty Paws.

Native Pet Omega-3 Fish Oil & Alaskan Salmon Oil Skin & Coat Health Supplement
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Check out Native Pet Omega-3 Fish Oil if you're looking for a straightforward supplement for dogs with itchy skin. This all-natural liquid supplement acts as a meal topper you add to dry or wet meals.

It's made of just five ingredients, including wild pollock fish oil, wheat germ oil, and wild-caught salmon oil. All these are high in fatty acids, which promote healthy skin and a sleek coat. The fourth ingredient is biotin, which is also proven to reinvigorate dry, flaky, and itchy skin.

Easy to add to food with a pleasing fishy flavor, it's ideal for picky pups who usually turn their snouts up at supplements. And, with just a handful of ingredients, it's great for dogs with sensitive stomachs.

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

What pet parents say about Native Pet Skin & Coat Health Supplement

"I was curious about trying this oil to supplement my aging Chipin's health (13.5 years). I bought this 2 1/2 weeks ago and from the very first day my dog went from snacking on her food throughout the day to eating it in one sitting. She's obsessed with it and so am I! I also introduced it to my friend's dog (2 years) that is staying with us. He has some tummy issues and was not doing well but he got a taste of this Oil from my dog's food and he has instantly ate the food. He went from barely wanting the food the vet recommended to eating it fully! I do recommend it and I'm very excited to continue buying it for my pup."

Read more reviews on Chewy.


Image sourced from Chewy. Copyright Native Pet.

Pet Honesty Allergy Support Itchy Skin, Immune & Allergy Relief Chews
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Crafted by Pet Honesty's in-house PhD animal nutritionist, Pet Honesty Allergy Support Chews are rich in active ingredients that battle allergy symptoms. As well as histamine-balancing ingredients like colostrum and astragalus root, these supplements also contain quercetin.

Quercetin is one of the best anti-allergy ingredients in dog supplements — it helps reduce histamine levels and is high in antioxidants. Other active ingredients include turmeric, which has anti-inflammatory properties, and a blend of eight probiotics to keep your canine's belly happy.

As an added extra, Pet Honesty tries its best to care for the environment — all its packaging is 100% recycled.

Available flavors

  • 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

What pet parents say about Pet Honesty Allergy Support Chews

"My dog seems to have seasonal allergies. She is incredibly itchy, constantly biting her back. She sometimes gets a wet ear. She had only been eating these chews for about 2 weeks. She may be chewing at herself less? I don't think she's been eating them long enough to be able to say if they work yet. She does however seem to enjoy the way they taste!"

"My dog eats the chewable tablets with no issues. His skin has improved tremendously since taking this medication. He had black scabs covering his back, that resembled black heads. Vet said these were allergy related. He no longer has these scans."

Read more reviews on Chewy.


Image sourced from Chewy. Copyright Pet Honesty.


Nordic Naturals Omega-3 Pet Liquid Supplement
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Nordic Naturals Omega-3 Pet Liquid Supplement is another liquid food topper allergy supplement and an excellent alternative to Native Pet. This supplement for dogs is ideal for food allergies as it's made from only two ingredients: fish oil and D-alpha tocopherol.

High EPA and DHA fatty acids help soothe itchy skin while supporting your pup's joints, brain, and heart. D-alpha tocopherol is a form of vitamin E. Vitamin E helps strengthen the immune system, and promotes cognitive and eye health. Overall, it's simple yet effective and one of the best fish oil supplements on the market.

Available varieties

  • 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

What pet parents say about Nordic Naturals Omega-3 Pet Liquid Supplement

"Our dogs love this. No issues with getting them to take. Mix on food or a treat and gone. Makes their coats shiny and soft. Even helped our pup after we adopted him with flea issue he had. He'd itch and stretch all the time. This helped tremendously! NOTE: Have to refrigerate after opening. Only thing I wish this had was an eye dropper for dosage, runs down the bottle when done pouring."

"I was pleasantly surprised by this fish oil. I ordered it by mistake meaning to get the cod liver oil. However this one has a light smell unlike the other fish oils I have tried. My dog refuses to eat fish oil that is strong smelling. She won't eat her food at all. Glad this worked out for her."

Read reviews more on Chewy.
Image sourced from Chewy. Copyright Nordic Naturals.

Vet's Best Allergy Supplement Soft Chews
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Vet's Best Allergy Supplement Soft Chews include a few different active ingredients than other products on this list, in case you're searching for an alternative to your average allergy supplement.

The main active ingredient in these soft chews is nettle leaf powder, a natural antihistamine. Next up on the list is ocean kelp, which has anti-inflammatory properties — great for allergies and dogs with joint stiffness or arthritis. Another uncommon ingredient is citrus bioflavonoid complex, which boosts your canine companion's immune system.

Minor active ingredients include the likes of quercetin, vitamin E, and biotin — all of which have properties that combat seasonal and environmental allergens.

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

What pet parents say about Vet's Best Allergy Supplement Soft Chews

"My mini poodle gets these everyday! I feel like I am giving her something that is good for her and she just thinks it's a good treat!"

"For mild allergies, this works wonders. Mine take a low dose year-round, and I can bump it up as needed during allergy season. It also has Vitamin E which can help with mobility issues, a bonus!"

Read more reviews on Chewy.


Image sourced from Chewy. Copyright Compana Pet Brands.

Pupford Allergy Supplement for Dogs
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Pupford make a wide range of high-quality dog foods and treats, and its allergy supplements are no exception. The top three ingredients are turmeric, methylsulfonylmethane (MSM), and bromelain, which are known for their anti-inflammatory properties.

Further down the list, you'll find wild Alaskan fish oil, rich in omega-3 fatty acids, and quercetin, known for reducing histamine production. Nettle leaf, milk thistle, and licorice root all have properties that help alleviate itchy or inflamed skin.

Made in the USA with non-GMOs and no artificial additives, Pupford Allergy Supplement for Dogs is a superb natural supplement for your canine compadre. 

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

What pet parents say about Pupford Allergy Supplement for Dogs

"Pupford's Allergy Supplement has been a game-changer for Arlo! His itching and paw licking have significantly decreased, and his coat looks healthier. I love the clean ingredients, and the best part he actually eats them like a treat! Highly recommend for allergy-prone pups."

"This Allergy Supplement is great for dogs with sensitive skin and seasonal allergies. With the blend of natural ingredients, it promotes healthy skin, reduces itching, and supports overall immune health. A great option for dogs needing extra allergy relief!"

Read more reviews on Chewy.


Image sourced from Chewy. Copyright Pupford.

Finn Allergy & Itch Soft Chews
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Rounding out our list of the best allergy supplements for dogs is Finn Allergy & Itch Soft Chews. These chews contain several familiar allergy-alleviating active ingredients like colostrum, quercetin, bromelain, and wild Alaskan fish oil.

Unusual ingredients not found in other entries on this list include fructooligosaccharides (FOS), a supercharged probiotic beneficial for bacteria in the large intestine. Another is bee propolis, which helps tackle ringworms and reduces intestinal inflammation.

Due to its use of powerful probiotics and bee propolis, Finn Allergy & Itch Soft Chews are ideal if your dog suffers from digestive issues due to allergies.

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

What pet parents say about Finn Allergy & Itch Soft Chews 

"My pups love Finn supplements! The Allergy & Itch chew helped with my pup's seasonal allergies. I noticed him scratching less and less. He and his sister get so excited anytime they see a Finn tin out because they think they are treats! We highly recommend this one if your pup has seasonal allergies."

"One of the standout features is the ease of dosing, it has been accommodating to both my small and large dog. The supplement itself is also highly palatable, making daily use effortless. After consistent use there has been a noticeable reduction in itching and redness, along with improved coat health. Highly recommend!"

Read more reviews on Chewy.


Images sourced from Chewy. Copyright  Finn Wellness.

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