Dog Allergy & Immune Supplements | PetSmart Canada
Skip to content
Enable accessibility
|
Gift card
|
Flyer
|
Track your order
Sign up, earn points, get treats
PetSmart PetSmart
Start typing, then use the up and down arrows to select an option from the list
Related Products
Top Paw® Double Door Folding Wire Dog Crate with Divider Panel
Hill's® Science Diet® Sensitive Stomach & Skin Adult Dry Dog Food - Chicken & Barley
ExquisiCat Naturals Multi-Cat Paper Pellet Cat Litter - Unscented, Low Dust, Low Tracking, Natural
Top Paw® X-Large Adhesive Leakproof Dog Pads - 28" x 34"
Top Fin® Essentials Aquarium Starter Kit
Oxbow Western Timothy Hay
Trending Categories
Food
Treats
Dog beds
Litter boxes
Aquariums
Fish
Trending Brands
Purina Pro Plan
Simply Nourish
Scoop Free
Kong
Full Cheeks
Top Fin
loyalty icon
sign in
Treats & Account
Loyalty Logo

Join our loyalty program & earn points every time you shop!

Sign up

Time to start shopping!

  • shop by brand

    • Shop all Brands
  • shop by pet
      • dog
      • cat
      • fish
      • bird
      • reptile
      • small pet
      • Food
        • Dry Food Canned Food Food Toppers Frozen Raw & Fresh Dog Food Puppy Food Shop All
      • Treats
        • Biscuits & Bakery Bones & Rawhide Chewy Treats Dental Treats Jerky Training Treats
      • Supplies
        • Beds & Furniture Bowls & Feeders Cleaning Supplies Clothing & Shoes Collars, Harnesses & Leashes Crates, Gates & Containment
        • Vitamins & Supplements Health & Wellness Flea & Tick Grooming Supplies Toys Training & Behavior
      • Food & Treats
        • Wet Food Dry Food Treats Food Toppers Kitten Food Catnip & Grass Shop All
      • Litter
        • Deodorizers & Filters Litter Litter Boxes Mats & Liners Waste Disposal
      • Supplies
        • Beds & Furniture Bowls & Feeders Cleaning & Repellents Clothing & Accessories Collars, Harnessess & Leashes Crates, Gates & Containment Vitamins & Supplements
        • Health & Wellness Flea & Tick Grooming Supplies Toys
      • Fish Shop
        • Tropical & Freshwater Goldfish Koi and Pond Fish Betta Shrimp Cichlid Shop all
      • Food & Care
        • Disease Treatment Feeders Food Plant Care Pond Care Saltwater Aquarium Care
        • Water Care & Conditioning Water Quality Testers
      • Supplies
        • Décor, Gravel & Substrate Heating & Lighting Filters & Pumps Maintenance & Repair Starter Kits Tanks & Aquariums
      • Live Fish
        • Goldfish, Betta & More
      • Food & Treats
        • Pet Bird Food Treats Wild Bird Food
      • Supplies
        • Bowls & Feeders Cages & Stands Cleaning & Odor Control Grooming Health Care & Vitamins Litter & Nesting
        • Toys, Perches & Décor Wild Bird Food & Supplies
      • Live Birds
        • Conure, Parakeet & More
      • Habitats & Decor
        • Habitat Accessories Habitat Décor Starter Kits Terrariums
      • Supplies
        • Cleaning & Water Care Environmental Control & Lighting Feeders & Food Storage Food Substrate & Bedding Vitamins & Supplements
      • Live Reptiles
        • Snakes, Turtles & More
      • Small Pet Shop
        • Hamster & Gerbil Guinea Pig Rabbit Ferret Rat & Mouse Chinchilla Hedgehog & Sugar Glider Shop all
      • Food, Treats & Hay
        • Hay Food Treats
      • Supplies
        • Cages, Habitats & Hutches Cleaning & Odor Removers Harnesses & Travel Carriers Health & Grooming Litter & Bedding Starter Kits
        • Toys & Habitat Accessories
      • Live Small Pets
        • Hamsters, Guinea Pigs & More
  • pet services
      • Pet Services
        • Grooming Salon Training Classes PetsHotel Boarding Doggie Day Camp
      • Adoption
        • Pet Adoption PetSmart Charities
      • Learning Center
        • Dog Care Cat Care Fish Care Bird Care Reptile Care Small Pet Care
  • Sale
      • Shop all Deals
      • Dog Deals
      • Cat Deals
      • Fish Deals
      • Bird Deals
      • Reptile Deals
      • Small Pet Deals
      • Treat of the Month
  • Featured
      • The Holiday Shop
      • Outdoor Shop
      • New Pet
      • Curbside & In Store Pickup
      • Save with Autoship
      • Free Same-Day Delivery
  • help

    • our experts are available to help:

      Contact Us Track Your Order
  • my store

    Niagara Falls

    4.6
    666 store reviews

    7481 Oakwood Dr

    Niagara Falls, ON L2E6S5

    (905) 374-3050

    See Store Details get directions
    Store Services
    Grooming
    Training
    Adoptions
    Curbside Pickup
    Store Hours
    TODAY 9AM-9PM
    WED 9AM-9PM
    THU 9AM-9PM
    FRI 9AM-9PM
    SAT 9AM-9PM
    SUN 10AM-7PM
    MON 9AM-9PM

    Note: Hours for Services (Grooming, PetsHotel and Training) and Holidays may vary. Please see store details or contact the store for more information.

    find another store

account log in


Please complete the captcha
we are no longer supporting social sign in
please click to access your account.

account sign up

New customer? Create a Treats™ account now to start earning points on future purchases.
create an account

login required

Autoship orders require an account for recurring orders. Please sign in or create an account to complete your purchase.

sign in create account

forgot password

Enter your email address and we will send you a link to reset your password.

Please complete the captcha

We apologize for the inconvenience. Try creating a new account.

If an account exists for this email, we've sent a temporary link to reset your password.

If you don’t receive this email, check your SPAM folder or create an account.

return to sign in

change password

Please enter your new password.

*Passwords must be at least 8 characters long, contain at least one letter and contain at least one of the following: upper case letter, number, or special character.

Password has been successfully updated.

return to sign in
enable accessibility
PetSmart PetSmart
Treats & Account
PetSmart

Time to start shopping!

Start typing, then use the up and down arrows to select an option from the list
Related Products
Top Paw® Double Door Folding Wire Dog Crate with Divider Panel
Hill's® Science Diet® Sensitive Stomach & Skin Adult Dry Dog Food - Chicken & Barley
ExquisiCat Naturals Multi-Cat Paper Pellet Cat Litter - Unscented, Low Dust, Low Tracking, Natural
Top Paw® X-Large Adhesive Leakproof Dog Pads - 28" x 34"
Top Fin® Essentials Aquarium Starter Kit
Oxbow Western Timothy Hay
Trending Categories
Food
Treats
Dog beds
Litter boxes
Aquariums
Fish
Trending Brands
Purina Pro Plan
Simply Nourish
Scoop Free
Kong
Full Cheeks
Top Fin
  • Shop by Brand
  • Sale
    • Shop all Deals
    • Dog Deals
    • Cat Deals
    • Fish Deals
    • Bird Deals
    • Reptile Deals
    • Small Pet Deals
    • Treat of the Month
  • Featured
    • The Holiday Shop
    • Outdoor Shop
    • New Pet
    • Curbside & In Store Pickup
    • Save with Autoship
    • Free Same-Day Delivery
  • dog
    • Dog Shop
    • Food
      • Dry Food
      • Canned Food
      • Food Toppers
      • Fresh & Frozen Food
        • Shop All Fresh & Frozen Food
      • Milk Replacers
      • Veterinary Diets
    • Treats
      • Biscuits, Cookies & Bakery Treats
      • Bones, Bully Sticks & Chews
      • Soft & Chewy Treats
      • Dental Treats & Chews
      • Jerky Treats
      • Training Treats
      • Puppy Treats
      • Frozen Treats & Ice Cream
    • Toys
      • Chew Toys
      • Plush Toys
      • Interactive Toys
      • Fetch Toys
      • Rope & Tug Toys
      • Toy Storage
    • Flea & Tick
      • Spot Ons
      • Flea & Tick Pills
      • Flea & Tick Collars
      • Flea Shampoos & Dips
      • Flea & Tick Pet Sprays
      • Combs & Tools
      • Home & Yard Treatment
    • Health & Wellness
      • Dental & Breath Care
      • First Aid & Recovery
      • Vitamins & Supplements
      • Anxiety & Calming Care
      • Dewormers
      • Diarrhea & Digestion Relief
      • Ear & Eye Care
      • Hot Spot & Itch Relief
      • Milk Replacers & Nursing Kits
      • Pill Administration
      • Nose & Paw Care
      • Test Kits
    • Vitamins & Supplements
      • Anxiety & Calming
      • Dietary Supplements
      • Probiotic & Digestive
      • Eye Care
      • Heart & Liver
      • Hip & Joint
      • Immune System & Allergy
      • Multivitamins
      • Skin & Coat
      • Urinary & Kidney
      • Stool Eating Deterrent
    • Cleaning Supplies
      • Waste Disposal
      • Stain & Odor Removers
      • Furniture & Car Protection
      • Pet Hair Removers
      • Vacuums
    • Crates, Gates & Containment
      • Crates & Kennels
      • Carriers & Backpacks
      • Mat & Crate Covers
      • Dog Doors & Gates
      • Houses & Pens
      • Car Booster Seats
      • Fence Systems
      • Car Barriers
      • Strollers & Bicycle Baskets
    • Beds & Furniture
      • Pillow Beds
      • Cuddler Beds
      • Orthopedic Beds
      • Crate Mats
      • Elevated Beds
      • Pet Memorials
      • Ramps & Steps
      • Cooling & Heating Beds
      • Blankets
    • Bowls & Feeders
      • Automatic Feeders
      • Elevated Stands
      • Food & Water Bowls
      • Placemats
      • Storage & Scoops
    • Clothing & Shoes
      • Costumes
      • T-shirts & Tank Tops
      • Bandanas, Bows & Hats
      • Life Jackets & Swim Suits
      • Boots, Shoes & Socks
      • Dresses
      • Jackets & Coats
      • Stress & Anxiety
      • Jerseys & Team Sports
    • Collars, Harnesses & Leashes
      • Collars
      • Harnesses
      • ID Tags
      • Leashes
      • Tie Outs
      • Training Collars, Leashes & Harnesses
      • Flea & Tick Collars
    • Grooming Supplies
      • Shower & Bathing Supplies
      • Brushes, Combs & Blowdryers
      • Wipes & Deodorizers
      • Eye, Ear, Nose & Paw Care
      • Nail Clippers & Grinders
      • Shampoos & Conditioners
      • Hair Clippers & Trimmers
    • Training & Behavior
      • Bark Control
      • Clicker Training
      • Deterrents
      • Cameras & Monitors
      • Potty Training
      • Training & Behavior Accessories
      • Training Collars, Leashes & Harnesses
      • Training Treats
  • cat
    • Cat Shop
    • Food & Treats
      • Wet Food
      • Dry Food
      • Catnip & Grass
      • Treats
      • Food Toppers
      • Frozen Food
      • Milk Replacers
      • Veterinary Diets
    • Litter & Waste Disposal
      • Litter
      • Litter Boxes
      • Mats & Liners
      • Waste Disposal
      • Deodorizers & Filters
    • Toys
      • Plush, Balls & Mice
      • Teasers & Wands
      • Interactive & Electronic
      • Catnip & Grass
      • Tunnels, Tents & Sacks
    • Health & Wellness
      • Dental & Breath Care
      • First Aid & Recovery
      • Milk Replacers & Nursing Kits
      • Vitamins & Supplements
      • Anxiety & Calming Care
      • Dewormers
      • Diarrhea & Digestion Relief
      • Ear & Eye Care
      • Pill Administration
      • Hot Spot & Itch Relief
    • Flea & Tick
      • Combs & Tools
      • Flea Shampoos & Dips
      • Flea & Tick Collars
      • Flea & Tick Pet Sprays
      • Flea & Tick Pills
      • Home & Yard Treatment
      • Spot On
    • Cleaning & Repellents
      • Furniture & Home Protection
      • Pet Hair Removers
      • Repellents
      • Stain & Odor Removers
      • Vacuums
    • Crates, Gates & Containment
      • Carriers
      • Doors
      • Pens
    • Beds & Furniture
      • Covered Beds
      • Cuddler Beds
      • Furniture & Towers
      • Heated Beds
      • Pet Memorials
      • Scratchers
      • Window Perches
    • Bowls & Feeders
      • Automatic Feeders
      • Elevated Stands
      • Food & Water Bowls
      • Placemats
      • Storage & Scoops
    • Clothes & Costumes
    • Collars, Harnesses & Leashes
      • Collars
      • Flea & Tick Collars
      • Harnesses
      • ID Tags
      • Leashes
      • Tie Outs
    • Grooming Supplies
      • Nail Clippers & Caps
      • Brushes, Combs & Blowdryers
      • Wipes & Deodorizers
      • Shampoos & Conditioners
    • Vitamins & Supplements
      • Anxiety & Calming
      • Dietary Supplements
      • Probiotic & Digestive
      • Eye Care
      • Hairball Control
      • Urinary & Kidney
      • Hip & Joint
      • Immune System & Allergy
      • Multivitamins
      • Skin & Coat
    • Clothing & Accessories
  • fish
    • Fish Shops
      • Tropical and Freshwater
      • Goldfish
      • Koi and Pond fish
      • Betta
      • Shrimp
      • Cichlid
      • Shop all
    • Food & Care
      • Disease Treatment
      • Feeders
      • Food
      • Plant Care
      • Pond Care
      • Salt Water Aquarium Care
      • Water Care & Conditioning
      • Water Quality Testers
    • Tanks, Aquariums & Nets
      • Aquariums
      • Aquarium Stands
      • Tank Dividers & Containers
    • Maintenance & Repair
      • Adhesives & Sealants
      • Brushes & Tank Cleaners
      • Vacuums
      • Breeders & Nets
    • Filters & Pumps
      • Air & Water Pumps
      • Filters
      • Filter Media
    • Decor, Gravel & Substrate
      • Artificial Plants
      • Aquarium Substrate
      • Backgrounds
      • Gravel, Sand & Stones
      • Live Plants
      • Ornaments
      • Plant Food & Fertilizers
    • Heating & Lighting
      • Heaters
      • Hoods & Glass Canopies
      • Heating & Lighting Accessories
      • Lights
    • Live Fish
    • Starter Kits
  • bird
    • Food & Treats
      • Pet Bird Food
      • Treats
    • Cages & Stands
      • Cages
      • Cage Covers
      • Stands
      • Travel Carriers
    • Bowls & Feeders
      • Feeders & Treat Holders
      • Cups
    • Litter & Nesting
      • Cage Liners
      • Litter & Bedding
      • Nesting Supplies
    • Toys, Perches & Decor
      • Ladders
      • Mirrors
      • Perches & Swings
      • Toys
    • Grooming
    • Health Care & Vitamins
      • Treatments
      • Vitamins & Supplements
    • Cleaning & Odor Control
      • Brushes & Scrubbers
      • Deodorizers & Waste Cleanup
    • Live Birds
    • Wild Bird Food & Supplies
      • Coops & Outdoor Habitats
      • Outdoor Feeders
      • Wild Bird Food
  • reptile
    • Reptile Shop
    • Food
    • Habitats & Decor
      • Habitat Accessories
      • Habitat Décor
      • Terrariums
    • Environmental Control & Lighting
      • Bulbs & Lamps
      • Heaters
      • Humidity & Temperature Control
      • Light Fixtures
    • Cleaning & Water Care
      • Deodorizers
      • Filter Systems & Pumps
      • Sanitizers
      • Filter Media
      • Waste Removers
      • Water Conditioners
    • Substrate & Bedding
    • Vitamins & Supplements
    • Feeders & Food Storage
      • Feeding Accessories
    • Live Reptiles
    • Starter Kits
  • small pet
    • Small Pet Shops
      • Hamster & Gerbil
      • Guinea Pig
      • Rabbit
      • Ferret
      • Rat & Mouse
      • Chinchilla
      • Hedgehog & Sugar Glider
      • Shop all
    • Food, Treats & Hay
      • Food
      • Hay
      • Treats
    • Cages, Habitats & Hutches
      • Cages
      • Habitat Expansions
      • Play Pens
    • Litter & Bedding
      • Litter & Bedding
      • Litter Pans
    • Toys & Habitat Accessories
      • Feeders & Water Bottles
      • Small Pet Costumes
      • Toys
      • Tunnels & Hideouts
    • Cleaning & Odor Removers
      • Brushes & Scrubbers
      • Deodorizers
      • Sanitizers
      • Stain & Odor Removers
    • Harnesses & Travel Carriers
      • Harnesses
      • Travel Carriers
    • Health & Grooming
      • Grooming Supplies
      • Vitamins & Supplements
    • Starter Kits
  • learning
  • Featured Brands
    • Authority
    • Blue Buffalo
    • Hill's Science Diet
    • Royal Canin
    • Simply Nourish
    • Wellness
      • Cat
      • Dog
    • Merrick
    • Arm & Hammer
    • Dentley's
    • FURminator
    • KONG
    • Nature's Miracle
    • Nulo
    • NUTRO
    • Purina ONE
    • TruFood
      • Cat
      • Dog
    • ED Ellen DeGeneres
    • Skout's Honor
    • Beaver Canoe
    • biOrb
    • Licks
    • North Fetch
    • Zodiac
  • Featured Shops
  • Local Ad
  • Pet Services
  • Gift card
  • Track your order
  • Create Account sign in
1-888-839-9638
skip navigation
Treats & Account
PetSmart PetSmart

Time to start shopping!

Start typing, then use the up and down arrows to select an option from the list
Trending Categories
Food
Treats
Dog beds
Litter boxes
Aquariums
Fish
Trending Brands
Purina Pro Plan
Simply Nourish
Scoop Free
Kong
Full Cheeks
Top Fin
back to toptop
Refine Your Results By:
dog  /  Vitamins & Supplements  /  Immune System & Allergy
0 Filters Selected
8 Items Found

Shop By Store

  • Niagara Falls 8
    Change Store

category

  • Treats 1
  • Vitamins & Supplements 8
View More

application

  • Liquid 5
  • Soft Chews 3
View More

health feature

  • Allergies 2
  • Anxiety & Calming 1
  • Cough 1
  • General Health 1
  • Heart Disease 1
  • Immune Support 4
  • Lactation Support 1
View More

brand

  • Foley's 1
  • HomeoPet 1
  • Hungry Hunter 1
  • Omega Alpha 2
  • True Leaf 1
  • Wellness 1
  • Zesty Paws 1
View More

price

  • <$5 1
  • $5 - $10 1
  • $20 - $25 1
  • $25 - $50 3
  • $50 - $75 3
View More

lifestage

  • Adult 1-7 yrs 5
  • All Life Stages 3
  • Puppy 0-12 mos 1
  • Senior 8 yrs & older 1
View More

product rating

  • > 4 5
  • 1 - 2 1
  • 3 - 4 1
View More

more ways to shop

  • New 1
View More
  • products (8)
  • information (0)

Immune System & Allergy

sort by Best Sellers
  • Relevance
  • Price: High to Low
  • Price: Low to High
  • Best Sellers
  • New Arrivals
  • Top Rated
Filter

  • Omega Alpha Lung Tone Liquid Supplement for Dogs and Cats

    Old Price $ 8.99
    (2)

    Sign In & Enjoy Free Shipping On Orders $49+

    Enjoy Free Same-day delivery!
  • 2 Sizes

    Hungry Hunter Herring Oil Pet Supplement

    Old Price $ 21.99 - 29.99
    (7)

    Sign in & Save 15% on your first Autoship Order!

    Sign In & Enjoy Free Shipping On Orders $49+

  • Omega Alpha HealthyPet Liquid Supplement for Dogs and Cats

    Old Price $ 4.47
    (0)

    Sign In & Enjoy Free Shipping On Orders $49+

    Enjoy Free Same-day delivery!

  • Zesty Paws Immune Chews for Dogs

    Old Price $ 39.99
    (1330)

    Sign in & Save 15% on your first Autoship Order!

    Sign In & Enjoy Free Shipping On Orders $49+

  • HomeoPet® Sinus+ Relief

    Old Price $ 20.99
    (13)

    Sign in & Save 15% on your first Autoship Order!

    Sign In & Enjoy Free Shipping On Orders $49+
  • New

    Foley's Functional Fungi Digestion & Immune Support Dog Treats

    Old Price $ 17.99
    (1)

    Sign in & Save 15% on your first Autoship Order!

    Sign In & Enjoy Free Shipping On Orders $49+

  • Wellness® Shield Immune Health & Seasonal Allergy Support Soft Chews

    Old Price $ 25.99
    (550)

    Buy 1, Get 2nd 50% off All Calming products

    Sign in & Save 15% on your first Autoship Order!

  • True Leaf Everyday Omega Immune and Cognitive Support Hemp Seed Oil for Dogs

    Old Price $ 24.47
    (1)

    Sign In & Enjoy Free Shipping On Orders $49+

    Enjoy Free Same-day delivery!

find a store

Loading...

We have over 140 stores across Canada. Find products, grooming, training, boarding and day camp services near you.

see all locations

Join Treats™. Earn Points. Get FREE shipping on orders over $49
Treats™ points add up quickly when you activate and earn with personalized offers on products and services!
Learn more

347,179 lives saved.

Pet Services Careers Help Center Treats program Accessibility Statement
About PetSmart Charities US Site Canada Site
Download on the App Store Download on the Google Play Store
Connect With Us
  • Instagram Icon
  • FaceBook Icon
  • Twitter Icon
  • YouTube Icon
Copyright © PetSmart LLC
Recalls | Terms of Use | Privacy Policy | Interest-Based Ads

**For every purchase made on petsmart.ca during 11/28/2023-12/15/2023 using Same Day Delivery, DoorDash and PetSmart will each donate $1.00 (up to $15,000 for a total of $30,000) to PetSmart Charities of Canada to help support it’s mission. PetSmart Charities of Canada is an independent, registered charity.

*Terms & conditions apply. Eligible products only. See product page for eligibility and offer details.

Ship to Home Disclaimer: Treats members receive free standard shipping on select online orders over $49 (prior to taxes & after discounts are applied) when signed into their Treats account prior to purchase. Shipping is not available to Quebec. The savings will automatically reflect in the shopping cart with the purchase of qualifying merchandise. Due to size and/or weight, certain items bear an additional shipping surcharge or special handling fee. Select products in the following categories are not available for free shipping: live pets, canned, fresh or frozen foods, select cat litters. Free shipping may not be combinable with other promotional offers or discounts. Deliveries may be delayed due to acts beyond our reasonable control, which may include, but are not limited to, weather, strikes, power outages, shutdowns, local, provincial or federal governmental actions, and other similar acts.

Same-Day Delivery Disclaimer: Free Same-Day Delivery offer valid on select merchandise purchased at petsmart.ca when choosing Same-Day Delivery. Same-day delivery is available in most areas. Order by 9am for delivery between 12pm-3pm, by 1pm for delivery between 3pm-6pm, & by 5 pm for delivery between 7:30pm-9pm. Orders placed after 3pm will be fulfilled the next day. Delivery may be delayed due to acts beyond our reasonable control, which may include, but are not limited to, weather, strikes, power outages, shutdowns, local, provincial or federal governmental actions, and other similar acts. While delivery is contact-free, be sure to be home during your delivery window to bring any perishable items inside right away. Prices & selection may vary in stores & online. While supplies last. Quantities may be limited. See www.petsmart.ca/help or store associate for more details.

Autoship Disclaimer: Sign up for Autoship and have products conveniently delivered to you at the frequency you choose! Autoship now available in select areas only; eligibility for Autoship is determined once ship-to postal code is entered. Enrol today and enjoy 15% savings on select items on your initial autoship order and up to 5% on all recurring orders. Treats membership is required to receive discount. Must be signed into your Treats account prior to purchase. Maximum savings is $30.00. Certain products and brands are not eligible for sitewide offers or promotions and specifically excludes, services, gift cards, gift certificates, previous purchases and charitable donations. Savings will automatically reflect in cart on qualifying item upon enrollment in Autoship. Treats members receive free shipping on select orders over $49.00, prior to taxes & after discounts are applied. Offer may not be combinable with other promotional offers or discounts. While supplies last. Quantities may be limited. Deliveries may be delayed. Terms and conditions of this offer are subject to change at the sole discretion of PetSmart.

In-Store Pickup Disclaimer: Curbside orders must be picked up two hours prior to store closing time. In store pickup available during all store hours. Orders must be placed two hours prior to pickup to receive same day. Store hours may vary. Check your local store for details & current store hours. Prices & selection may vary by store & online. While supplies last. Quantities may be limited. See PetSmart | Help or store associate for more details.

oops! something went wrong

We are facing some technical issues. Please try again later.