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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  • VetriScience Extra Strength Healthy Hip & Joint

    VetriScience Extra Strength Healthy Hip & Joint Product Image

    Ingredient Transparency:

    5 / 5

    Scientific Support:

    4.5 / 5

    Brand Score:

    4 / 5

    overall Rating:

    4.5 / 5

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    Product Overview

    Extra Strength Healthy Hip & Joint (formerly GlycoFlex 3) targets senior dog mobility using Green Lipped Mussel. While the NASC seal confirms quality, the strong marine smell and reliance on internal research are notable downsides. Its transparent, high-potency labeling makes it a strong consideration for advanced joint support.

    Key Benefits

    • Manufacturer-funded study reported a 41% increase in hind leg strength.
    • Supports joint comfort and healthy inflammation response.
    • Provides nutrients for cartilage maintenance and joint structure.

    Pros

    • Transparent ingredient labeling lists exact dosages
    • NASC quality seal confirms strict safety audits
    • Includes clinical levels of Green Lipped Mussel

    Cons

    • Strong marine odor is unpleasant
    • Efficacy claims rely on older internal research
    • Chews can sometimes arrive hard or stale

    Bottom line

    This high-dose supplement targets stiffness and aging joints. While expensive and smelly, the NASC safety seal and transparent ingredients offer verified value. It is best suited for seniors or working dogs, though buyers should note the efficacy data comes mainly from internal brand research.

  • 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.

  • 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.

  • Paramount Pet Health Liquid Glucosamine

    Paramount Pet Health Liquid Glucosamine Product Image

    Ingredient Transparency:

    4 / 5

    Scientific Support:

    4 / 5

    Brand Score:

    3.5 / 5

    overall Rating:

    4 / 5

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    Product Overview

    Paramount Pet Health Liquid Glucosamine provides high-potency joint support in a convenient fluid form. It effectively targets pill-averse dogs with robust dosages, yet it lacks the reassurance of NASC certification. Users report excellent mobility gains, though pump mechanics and consistency vary.

    Key Benefits

    • Liquid form absorbs faster than pills
    • High-strength dose supports mobility
    • Savory flavor aids easy dosing
    • Ideal for large or aging dogs

    Pros

    • Mixes easily with any dog food
    • Higher potency than many chews
    • Economical for multi-dog homes
    • Fast absorption speed

    Cons

    • Lacks NASC certification
    • Pump dispensers can leak
    • Uses Glucosamine HCl (potentially less effective than Sulfate)
    • Batch color may vary

    Bottom line

    Paramount Pet Health delivers a potent liquid solution that eliminates the daily battle of pilling your dog. It offers superior absorption speed and great value for large breeds. While effective, the absence of an NASC safety seal is a notable omission that buyers must consider.

  • 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

    Read Review

    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.

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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