9 Best Dog Allergy Supplements: Anti-Itch Chews, Oils, Vitamins & More


Last Updated: April 30, 2024 | 11 min read | Leave a Comment

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Itchy skin and digestive issues are common problems with our pups. And sometimes, allergies or intolerances to environmental or food allergens are to blame. If you suspect your dog’s symptoms are due to allergies, you’re certainly not alone. That’s why the commercial market is flooded with supplements that claim to relieve dog allergies.

As with all consumer products, some allergy supplements for dogs are of a higher quality and more effective than others. We’ve done our research to weed through your options, and we think the best allergy supplement for dogs is Pet Honesty Allergy Support Chews. But depending on your dog’s needs, there are many others to consider that might fit the bill better. Let’s dive in to help you find allergy relief for your furry friend among our top picks.

At A Glance: Best Dog Allergy Supplements

OverallAdvancedFor Seasonal AllergiesMultivitaminFish OilOrganic
Pet Honesty Allergy Support ChewsZesty Paws Advanced Aller-Immune BitesNative Pet Allergy ChewsNaturVet All-in-One Dog SupplementPet Honesty Wild Caught Omega 3 Fish OilBIXBI Skin & Coat Powder
Pet HonestyZesty PawsNative PetNaturVetPet HonestyBixbi
Visit WebsiteView on ChewyVisit WebsiteView on ChewyVisit WebsiteView on Chewy
Read ReviewRead ReviewRead ReviewRead ReviewRead ReviewRead Review

Best Allergy Supplements For Dogs

We’ve chosen the best supplements for dogs with allergies based on several factors, including the active ingredients, quality, pricing, customer feedback, and more. See our ingredient section below if you’re not familiar with the most beneficial active ingredients we include in our reviews.

We’ve noted in our reviews the products that have the quality seal of approval from the National Animal Supplement Council (NASC) for safe manufacturing practices. The NASC is a non-profit trade organization that’s committed to setting standards for pet supplements, which aren’t regulated by the FDA.

3 Expert Tips

  • Always check with your vet before giving your pup any supplements.
  • Keep in mind that dog allergy supplements can take up to six to eight weeks of daily use to see noticeable benefits.
  • Not all allergy supplements work for every dog. It can depend on what’s causing your dog’s allergies and how your pup tolerates ingredients.

Best Overall: Pet Honesty Allergy Support Chews Review

Pet Honesty Allergy Support Chews

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Pet Honesty’s top-selling Allergy Support Chews are an excellent all-natural daily supplement for dogs with occasional environmental and food allergies. Their premium vet-formulated blend of colostrum, salmon oil, astragalus root, a seven-strain probiotic, turmeric, quercetin, organic medicinal mushrooms, and apple cider vinegar has multiple benefits to improve your pup’s allergy symptoms.

These soft chews can help maintain normal histamine levels, support a healthy immune system and gut, and soothe skin problems associated with allergies. Pet Honesty also carries several other dog allergy chews, oils, shampoos, and more to help improve allergy symptoms.

Recommended use: one chew daily per 25 pounds of weight

Competitively pricedSome customers said it caused vomiting and diarrhea
Chews contain no artificial preservatives, corn, wheat, soy, or GMOs
Comes in peanut butter and salmon flavors
30-day money-back guarantee
Save 20% with auto-shipping
Made in the USA


With Pet Honesty, you can subscribe for auto-shipping and save 20%. They also offer free shipping on orders over $49.

Full Review Of Pet Honesty

Best Advanced: Zesty Paws Advanced Aller-Immune Bites Review

Zesty Paws Advanced Aller-Immune Bites

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Several types of Zesty Paws’ allergy immune supplements for dogs get many rave reviews from pup parents. We’ve chosen to highlight the Advanced Aller-Immune Bites because of their potent ingredients. These all-natural, salmon-flavored soft chews contain colostrum, salmon oil, quercetin, bromelain, astragalus root, a five-strain probiotic, vitamin C, and other premium ingredients to help support immune, histamine, and digestive health. They’re intended for skin, seasonal, and environmental allergy issues.

Recommended use: begin with half the recommended amount and gradually increase.

  • Up to 25 lbs: 1 chew daily
  • 25-75 lbs: 2 chews daily
  • Over 75lb: 3 chews daily
All-natural and grain-free A few reports of diarrhea and lethargy
NASC-certifiedSome say their dogs didn’t like the taste
100% satisfaction guarantee
Made in the USA


Fully Zesty Paws Review

Best For Seasonal Allergies: Native Pet Allergy Chews Review

Native Pet Allergy Chews

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Founded in 2017, Native Pet is making its mark as a premium pet supplement manufacturer. And many customers find success for their pup’s allergy relief with Native Pet’s allergy chews. Active ingredients include colostrum for immune health, spirulina (superfood algae), dried fermentate (increases allergen-fighting antibodies), algae oil, and B. coagulans (a probiotic that boosts cell response to infections and supports gut health).

Featuring only nine all-natural ingredients, these chews are made in the USA and are slow-cooked and air-dried to preserve nutrients and freshness. They also include real chicken and pork bone broth, so take note in case your pup has allergies to one or both of these animal proteins.

Recommended use:

  • For the first 14 days, give 2 chews for every 25 lbs of dog body weight. 
  • After the first 14 days, give 1 chew for every 25 lbs of dog.
Vet-formulatedDoesn’t have NASC certification
All-natural with only 9 ingredientsSome complaints that the chews are too hard and the chew sizes are inconsistent
30-day money-back guarantee
Save 15% with auto-shipping
Made in the USA


You can save 10% off the following price by signing up for auto-shipping.

Full Review Of Native Pet

Best For Allergy & Immunity: PetLab Co. Allergy & Immune Chews Review

PetLab Co. allergy chews

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PetLab Co.’s allergy and immune probiotic chews can help maintain gut health while improving itchiness, improving skin and coat, and supporting immune system functioning all in one. Their research-backed, triple-action probiotic chews are designed to specifically address seasonal and occasional allergies in dogs. Each chew has a proprietary blend of probiotics, prebiotics, postbiotics, antioxidants, omega fatty acids, and colostrum.

Featuring only nine all-natural ingredients, these chews are made in the USA with premium quality ingredients. The chews come in 3 versions depending on your dog’s size, so you don’t have to worry about giving them the correct dosage.

Recommended use:

  • Small dogs (up to 25 pounds) take 1 Small Dog chew per day
  • Medium dogs (25-75 pounds) take 1 Medium Dog chew per day
  • Large dogs (more than 75 pounds) take 1Large Dog chew per day
Vet-formulatedOnly Pork flavor (not ideal for dogs with meat allergies)
3 strains of bacteria to promote hut healthA little strong odor
For dogs of all sizes (over 12 weeks of age)
Free shipping
Made in the USA from premium-quality globally sourced ingredients.


You can save 20% off the following price by signing up for subscriptions.

Best Multivitamin: NaturVet All-in-One Dog Supplement Review

NaturVet All-in-One Dog Supplement

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Are you looking for a supplement that offers much more than allergy relief? Naturvet’s All-In-One supplements are among the best vitamins for dogs with allergies. These soft chews provide health support for skin and coat, joints, and digestion, plus a wealth of essential vitamins and minerals.

Ingredients such as 3, 6, and 9 omegas, probiotics, biotin, and other vitamins in this supplement help maintain skin and coat health. However, it doesn’t include some other key ingredients, like quercetin and turmeric, to address histamine levels and skin inflammation.

Recommended use: Give at mealtime (can be divided among AM & PM meals)

  • Up to 30 lbs: 2 soft chews
  • 31-50 lbs: 4 soft chews
  • 51-75 lbs: 6 soft chews
  • Over 75 lbs: 8 soft chews
Excellent multivitamin for multiple health benefitsMay not be as effective for serious allergies as some other allergy-specific supplements
Wheat-freeRequires a lot of chews for larger dogs
NASC quality seal of approval
Money-back guarantee
Made in the USA


Best Fish Oil: Pet Honesty Wild Caught Omega-3 Fish Oil Review

Pet Honesty Wild Caught Omega 3 Fish Oil

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A lot of pup parents swear by fish oil to help control their dog’s allergy symptoms, and this Pet Honesty oil is a premium choice. Made only with anchovy oil, herring oil, mackerel oil, and sardine oil, it contains high amounts of DHA, EPA, and other omega-3 fatty acids. Omega-3s can help relieve irritated skin and stiff joints and are excellent for immunity, heart, brain, and overall health.

Pet Honesty is also committed to quality. The fish they use in this oil are low in mercury and toxins and are caught in the clean waters off of Iceland’s coast. And the oil doesn’t have a fishy odor like many other fish oils for dogs.

Recommended use: Pump directly onto your dog’s food and mix well. Give daily 1 pump per 10 lbs of body weight.

Our Personal Experience With Pet Honesty Omega-3 Fish Oil

“Since starting our dogs on this supplement, their coats have become so soft and shiny, and skin issues have entirely disappeared. One squirt a day in each dog’s bowl is all we use, so the bottle lasts more than a year! This is a great value, especially for such an effective product.”

Michelle Schenker, co-founder of Canine Journal and mixed-breed rescue parent
Pros Cons
Each serving has 800mg of EPA and 525mg of DHA and other omega-3sSeveral complaints that the pump doesn’t work well and leaks
Fish are carefully sourced
Purified naturally to remove fishy odor and taste
30-day money-back guarantee
Save 20% with auto-shipping
Made in the USA


You can subscribe for auto-shipping and save 20%. They also offer free shipping on orders over $49.

Full Review Of Pet Honesty

Best Organic: BIXBI Skin & Coat Powder Review

BIXBI Skin & Coat Powder

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It’s widely believed, particularly in Eastern medicine, that medicinal mushrooms have powerful benefits for the immune system and anti-inflammatory properties (among many other health benefits). This BIXBI organic pet superfood daily mushroom supplement is formulated for pets with seasonal allergies to support a healthy immune system response and skin and coat health. They’re made with a proprietary blend of USDA organic mushrooms, including reishi, beech, king trumpet, and more.

The founder and CEO of BIXBI grew up on a mushroom farm, so he has a lifetime of knowledge about their various health benefits. The company also carries other mushroom supplements for joint pain, digestive problems, and overall immune health, as well as a variety of all-natural dog food and treats.

Recommended use: Administer orally daily during or after mealtime. Give 1/4 teaspoon (.5 grams) per 25 lbs. For best results, double the dosage for the first 7 days.

USDA organic mushrooms On the pricey side
Grain and gluten-free with no artificial ingredientsMixed customer reviews about effectiveness
Made and sourced in the USA
Comes with a measuring spoon
Suitable for dogs and cats


Full Review Of BIXBI

What About Finn, STRELLALAB, & Vet’s Best?

These dog allergy supplements didn’t make it into our top picks, but they’re popular and relatively affordable products that you may want to consider.

Finn Allergy & Itch Supplement For Dogs Review

Finn Allergy & Itch Supplement For Dogs

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A relative newcomer to the dog supplement industry, Finn’s all-natural products are quickly becoming a popular choice among pup parents. The company’s philosophy is to only use scientifically backed ingredients in its products. Their Allergy & Itch Supplement contains colostrum, wild Alaskan salmon oil, quercetin, bromelain, prebiotics, a one-strain probiotic, bee propolis, and other key ingredients to help support your dog’s immune response and soothe itching and dry skin.

These chews are formulated to address seasonal allergies in dogs and are cold-pressed to preserve the potency of ingredients. They contain real cheese, bacon, and beef liver, all dog-favorite flavors.

Recommended use: Administer 1 soft chew daily per 25 lbs of body weight.

All-natural with no corn, wheat, soy, or artificial ingredientsSome say their dogs didn’t like the taste
NASC-certifiedMixed customer reviews about effectiveness
60-day money-back guarantee
Save 15% with auto-shipping
Made in the USA
Tins made with 100% recycled steel


You can save 15% off the following price and get free shipping by subscribing for recurring deliveries.

Read Full Finn Review

STRELLALAB Allergy Relief Immune Chews Review

STRELLALAB Allergy Relief Dog Treats

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Many pup parents find relief for their dogs with STRELLALAB Allergy Relief Immune chews. These soft chews are formulated to help with skin and digestive symptoms resulting from food, environmental, and seasonal allergies. They contain salmon oil, quercetin, bromelain, turmeric, grape seed extract, probiotics, and other beneficial ingredients.

However, if you want to know all the ingredients in a supplement before giving it to your pup, you may want to look elsewhere. STRELLALAB doesn’t disclose all of the ingredients in their allergy chews on their website.

Recommended use: Give daily (can be divided between morning and evening meals).

  • Up to 10 lbs: 1 chew
  • 10-30 lbs: 2 chews
  • 31-60 lbs: 3 chews
  • 61-90 lbs: 4 chews
  • Over 90 lbs: 5 chews

Note: The above feeding guidelines are from STRELLALAB’s website and differ from what’s listed on Amazon.com.

Affordably pricedDoesn’t have NASC certification
All-natural with no fillersNot transparent about all ingredients on their website
Comes in chicken, bacon, peanut butter, and vegetable flavorsMixed customer reviews about effectiveness
Made in the USA


Vet’s Best Seasonal Allergy Support Review

Vet's Best Seasonal Allergy Relief

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This popular Vet’s Best supplement was formulated by a veterinarian to specifically help dogs with seasonal allergies by helping to maintain normal histamine levels and supporting adequate skin moisture. The chewable tablets include quercetin and methylsulfonylmethane (MSM), a naturally occurring antioxidant compound that has anti-inflammatory benefits. Other natural ingredients, such as vitamin C, fish oil powder, bee propolis, nettle extract, perilla leaf, and ocean kelp, boost immune and skin health.

Vet’s Best is a respected brand that’s been making plant-based animal supplements for over 30 years. These tablets are only intended for dogs over one year of age.

Recommended use: Give the following amounts twice daily.

  • 10-24 lbs: 1/2 tablet
  • 25-49 lbs: 1 tablet
  • 50-75 lbs: 1-1/2 tablets
  • Over 75 lbs: 2 tablets

Our Personal Experience With Vet’s Best Seasonal Allergy Support

“Our dog Barley started breaking out in a red rash on his belly this spring and summer as the grass started growing in our yard. We started giving him this supplement, and the rash is gone. Check with your vet first, but I would recommend it for managing a dog’s skin allergies.”

Michelle Schenker, co-founder of Canine Journal and mixed-breed rescue parent
Veterinarian-formulatedDoesn’t include prebiotics or probiotics for gut health
Affordably pricedSome say their dogs didn’t like the taste
Customers say the tablets are easy to break apart to get the correct amount
Made in the USA


7 Active Ingredients To Look For In Dog Allergy Supplements

While many herbs and ingredients can help relieve itching and inflammation, these are the major ones you want to keep in mind for an effective allergy supplement for your pup.

  1. Omega-3 Fatty Acids, commonly found in fish oils, have been shown in research studies to help decrease inflammation in allergic dogs. Omega-3s also promote a shiny, healthy coat and joint and heart health.
  2. Probiotics support stronger gut health, which has been shown to promote a healthy immune response to allergens.
  3. Quercetin is a natural plant flavonoid that acts as an antihistamine, anti-inflammatory, and antioxidant (called “nature’s Benadryl”). It’s often paired with bromelain for maximum efficacy.
  4. Colostrum contains natural antibodies that can help boost immune health and improve inflammation.
  5. Turmeric is an antioxidant and anti-inflammatory that can help relieve redness, swelling, and itching.
  6. Astragalus, extracted from the stems or dried roots of the Astragalus membranaceus plant, has been shown to improve the cellular immune level in immunosuppressive dogs.
  7. Biotin is a B-complex vitamin that supports skin and coat health and is often used in humans for hair loss.

How Can I Figure Out What’s Causing My Dog’s Allergies?

Determining the cause of your dog’s allergies can be extremely difficult. We recommend that you consult your veterinarian to try to nail down the problem. But another first course of action is to give your pup an at-home dog allergy test kit. These kits test for intolerances to many food and environmental factors. Then, you can share these results with your vet to work on further diagnostics and a treatment plan.

Did You Know?

Pet insurance can cover testing, treatment, and prescription shots or medications for allergies as long as no signs or symptoms appear until after your policy enrollment and waiting periods have passed. Learn more about pet insurance coverage for dog allergies.

A Healthy Diet Can Make A Difference

Feeding your dog a high-quality diet can boost his immune system, which helps protect him from severe skin reactions. If you and your vet think a dog food change might help your pup’s allergy symptoms, you may want to consider our picks for the best dog food for allergies or a fresh dog food delivery service.

How Are Dog Allergies Treated?

Dog allergies and intolerances can wreak havoc on your pup’s well-being. If you’re struggling to help your pup with constantly itchy skin, we recommend you consult your vet. You may also want to learn more about allergy treatment options for different types of allergies and the best allergy medications for dogs.

The information provided through this website should not be used to diagnose or treat a health problem or disease; it is not intended to offer any legal opinion or advice or a substitute for professional safety advice or professional care. Please consult your health care provider, attorney, or product manual for professional advice. Products and services reviewed are provided by third parties; we are not responsible in any way for them, nor do we guarantee their functionality, utility, safety, or reliability. Our content is for educational purposes only.

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