Dog Supplement
Reviews and Ratings

Science-backed insights and honest reviews to help you choose the best supplements for your dog

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Featured Reviews

Our most popular dog supplement reviews this month! Whether you’re looking to support your dog’s joints, digestion, immune system, or overall wellness, we’ve highlighted top-rated products to help you make informed choices.

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  • Purina Pro Plan Veterinary Supplements FortiFlora

    Purina Pro Plan Veterinary Supplements FortiFlora Product Image

    Ingredient Transparency:

    3.5 / 5

    Scientific Support:

    4 / 5

    Brand Score:

    5 / 5

    overall Rating:

    4 / 5

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    Product Overview

    Purina FortiFlora is a widely recommended probiotic supplement distinguished by its guaranteed bacterial stability and exceptional palatability. It is designed to support immune health and help manage stress-related digestive upset. While highly reliable for these specific uses, the formula relies on animal digest for flavor and offers a lower colony-forming unit (CFU) count than some therapeutic alternatives.

    Key Benefits

    • Formulated to support a healthy immune system
    • Supports stool quality and flatulence reduction
    • Encourages appetite through savory flavoring
    • Helps manage diarrhea associated with antibiotic therapy

    Pros

    • Verified stability of live bacteria
    • Exceptional palatability for picky eaters
    • Suitable for most puppies and adult dogs

    Cons

    • Higher cost per serving than bulk powders
    • Includes animal digest and brewers yeast
    • Lower CFU potency than some clinical competitors

    Bottom line

    FortiFlora stands out as a reliable, easy-to-administer option for dog owners. While it may not be the most potent probiotic on the market, its proven stability and high acceptance rate make it a top consideration for helping manage common stress-related digestive issues and supporting immune health.

  • Flexadin Advanced with UCII

    Flexadin Advanced with UCII Product Image

    Ingredient Transparency:

    4 / 5

    Scientific Support:

    4 / 5

    Brand Score:

    4.5 / 5

    overall Rating:

    4 / 5

    Read Review

    Product Overview

    Flexadin Advanced with UC-II helps dogs move easier by reducing joint inflammation through immune balance. This once-daily chew uses patented undenatured collagen with vitamin E for comfort and mobility. It’s research-backed, well tolerated, and ideal for long-term support in dogs with mild to moderate joint stiffness.

    Key Benefits

    • Supports joint comfort and flexibility through UC-II.
    • Reduces stiffness and promotes easier movement.
    • Enhances long-term mobility and quality of life.
    • Simple once-daily chew for consistent use.

    Pros

    • Improves mobility and overall comfort.
    • Safe for long-term daily use.
    • Easy to give and well accepted.

    Cons

    • Takes weeks for results to appear.
    • Costs more than basic supplements.
    • Not ideal for dogs with chicken allergies.

    Bottom line

    Flexadin Advanced with UC-II offers proven joint relief through a unique immune-tolerance pathway. Backed by veterinary research and owner satisfaction, it’s a smart, convenient choice for managing mild to moderate arthritis and keeping dogs active, comfortable, and playful with consistent daily use.

  • Native Pet The Daily

    Native Pet The Daily Multivitamin Product Image

    Ingredient Transparency:

    4.5 / 5

    Scientific Support:

    4 / 5

    Brand Score:

    3.5 / 5

    overall Rating:

    4 / 5

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    Product Overview

    This powder multivitamin offers a clean, filler-free formula with high collagen levels. It excels as a preventative topper for picky eaters but lacks the third-party NASC seal found on top competitors.

    Key Benefits

    • Supports healthy mobility with 900mg of collagen per scoop
    • Promotes digestive balance using spore-forming probiotics
    • Enhances skin and coat with zinc and fatty acids

    Pros

    • High concentration of active ingredients
    • Savory beef broth flavor appeals to picky eaters
    • Free from fillers like corn and soy

    Cons

    • Lacks the NASC Quality Seal
    • Powder format can be messy to measure
    • Joint ingredients are preventative, not therapeutic

    Bottom line

    Native Pet The Daily is a high-quality, palatable choice for general wellness and prevention in younger dogs. While it lacks industry certifications, the transparent label and clean ingredients offer great value for owners avoiding fillers.

  • Fera Pets Hip + Joint Support

    Fera Pets Hip & Joint Product Image

    Ingredient Transparency:

    4.5 / 5

    Scientific Support:

    4.5 / 5

    Brand Score:

    5 / 5

    overall Rating:

    4.5 / 5

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    Product Overview

    Fera Pets Hip + Joint Support offers a vet-formulated blend of Green Lipped Mussel, Glucosamine Sulfate, and BioPerine. While the chicken bone broth flavored chews are designed to support a healthy inflammatory response and carry the NASC Quality Seal, we found during testing that they can be fragile and crumble easily inside the jar.

    Key Benefits

    • Helps maintain healthy cartilage and joint fluid
    • Green Lipped Mussel supports a healthy inflammatory response
    • Intended to support mobility for active dogs
    • BioPerine is included to help with turmeric absorption

    Pros

    • Ingredient quantities verified by the NASC Quality Seal
    • Includes BioPerine black pepper for absorption
    • Free from common fillers like corn, soy, and grain
    • Tasty chicken bone broth flavor

    Cons

    • Chews crumble easily in jar
    • Strong marine smell lingers
    • Rich oils may cause loose stools
    • Contains shellfish allergens

    Bottom line

    This supplement is a solid choice for owners seeking a multimodal joint supplement. It balances high-quality ingredients like Green Lipped Mussel with verifiable safety standards. Despite minor texture issues like crumbling, the concentrated, vet-formulated formula offers consistent value for any aging or active large breed dog.

  • Nutramax Cosequin

    Nutramax Cosequin Product Image

    Ingredient Transparency:

    4.5 / 5

    Scientific Support:

    4 / 5

    Brand Score:

    5 / 5

    overall Rating:

    4.5 / 5

    Read Review

    Product Overview

    Cosequin helps maintain healthy joints and mobility using proven ingredients like glucosamine and chondroitin. It’s trusted for quality and safety, though results vary among dogs and benefits take time to appear. Ideal for aging or active pets needing reliable, gentle joint support.

    Key Benefits

    • Supports joint structure and comfort
    • Promotes flexibility and easier movement
    • Safe for long-term daily use
    • Trusted veterinary brand with NASC seal
    • Palatable chewable tablets and soft chews

    Pros

    • Uses clearly identified ingredients with straightforward daily dosing.
    • Trusted brand with strong veterinary recommendation history.
    • Palatable chewable format that makes routine use simple.
    • Senior version includes omega-3 fatty acids for added joint support.
    • Safe for long-term use when given as directed.

    Cons

    • Research on glucosamine and chondroitin shows mixed results in dogs.
    • Improvements develop slowly over several weeks.
    • Works best when combined with veterinary care and lifestyle changes.
    • Some dogs may not like the flavor or texture.
    • Dogs with shellfish sensitivities should verify ingredient sources.

    Bottom line

    Cosequin is a safe, dependable choice for supporting your dog’s joint health. While benefits appear gradually, it’s backed by veterinary trust, consistent quality, and real-world results that help keep dogs active, comfortable, and happy.

DOG SUPPLEMENTS 101

The Complete Guide to Dog Supplements

Do dogs really need supplements? We break down the evidence behind probiotics, multivitamins, and joint support. Learn how to identify safe products and integrate them into your dog’s wellness strategy.

Read the Guide
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