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10 Best Fish Oil Supplements for Cats in 2021 – Reviews & Top Picks

cat sniffing a dropper

Finding the right fish oil supplement can be a challenge for cat owners. The benefits of supplementing with fish oils are extraordinary and more and more owners are introducing this supplement into their feeding regime.

It is always best to discuss any form of supplementation directly with your veterinarian before giving it to your cat or another pet in the household. They can help guide you in the process to ensure you are providing the best health benefits to your cat.

The market for fish oil supplements is a bit overwhelming with so many products available. We have taken to the reviews of other animal lovers and come up with a list of the best fish oil supplements available on the market today.

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A Quick Comparison of Our Favorites

Image Product Details
Best Overall
Winner
Zesty Paws Core Elements Wild Alaskan Salmon Oil Zesty Paws Core Elements Wild Alaskan Salmon Oil
  • Feature iconMade from wild Alaskan salmon
  • Feature iconContains EPA and DHA
  • Feature iconGreat taste
  • Best Value
    Second place
    American Journey Wild Alaskan Salmon Oil American Journey Wild Alaskan Salmon Oil
  • Feature iconMade from wild-caught Alaskan salmon and pollock
  • Feature iconContains EPA and DHA
  • Feature iconGreat price
  • Premium Choice
    Third place
    Nordic Naturals Omega-3 Pet Liquid Supplement Nordic Naturals Omega-3 Pet Liquid Supplement
  • Feature iconIs third party tested
  • Feature iconHigh potency
  • Feature iconMade with ethical practices
  • Best for Kittens
    Vetoquinol Care Triglyceride Omega Liquid Supplement Vetoquinol Care Triglyceride Omega Liquid Supplement
  • Feature iconBioavailable
  • Feature iconReasonably priced
  • Feature iconFree of fishy smell
  • TerraMax Pro Premium Omega-3 Fish Oil TerraMax Pro Premium Omega-3 Fish Oil
  • Feature iconContains EPA and DHA
  • Feature iconDistilled for purity and potency
  • Feature iconNo fillers, toxins, or artificial ingredients
  • The 10 Best Fish Oil Supplements for Cats in 2021

    1. Zesty Paws Core Elements Wild Alaskan Salmon Oil– Best Overall

    Zesty Paws Core Elements Wild Alaskan Salmon Oil Liquid Skin & Coat Supplement

    Supplement Form Liquid
    Quantity 32 fl oz
    Ingredients Salmon Oil

    Zesty Paws Core Elements Wild Alaskan Salmon Oil is a great choice of Omega 3 supplementation for cats. This oil comes in a 32 fluid ounce bottle and as the name states, is made from pure wild-caught Alaskan salmon.

    Zesty Paws comes in as the best overall choice for being so highly reviewed by pet owners and coming in at a decent overall price for the quantity. Most cats take well to the taste of this oil, as they are attracted to the scent of salmon. It offers all the benefits that Omega 3’s has to offer and is a great source of EPA and DHA.

    The only downside that reviewers complained of was the strong fish smell, which is typical of fish oils, though some manufacturers do try to eliminate the stronger scent. This product is made in the USA and is backed with a satisfaction guarantee.

    Pros
    • Made from wild Alaskan salmon
    • Contains EPA and DHA
    • Great taste
    Cons
    • Made from wild Alaskan salmon
    • Contains EPA and DHA
    • Great taste
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    2. American Journey Wild Alaskan Salmon Oil – Best Value

    American Journey Wild Alaskan Salmon Oil Formula Liquid Supplement for Cats

    Supplement Form Liquid
    Quantity 18 fl oz
    Ingredients Salmon Oil, Pollock Oil, Mixed Tocopherols (Preservative)

    Fish oil can be an expensive supplement, even more so if you have multiple cats or animals in the household that are being supplemented with it. American Journey Wild Alaskan Salmon oil is a great choice and provides great value for your money.

    This oil is derived from wild-caught Alaskan salmon and pollock. It does contain mixed tocopherols as a preservative, while some others are free of these. This supplement is a great source of both EPA and DHA and is well tolerated due to the taste.

    Some owners have complained that the bottle’s design makes it more difficult to properly dose and it does contain that typical fishy odor that can be a bit overwhelming and unpleasant.

    Pros
    • Made from wild-caught Alaskan salmon and pollock
    • Contains EPA and DHA
    • Great price
    Cons
    • Strong fish odor
    • Difficult to dose due to the bottle design
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    3. Nordic Naturals Omega-3 Pet Liquid Supplement– Premium Choice

    Nordic Naturals Omega-3 Pet Liquid Supplement for Cats

    Supplement Form Liquid
    Quantity 2 fl oz
    Ingredients Fish Oil, D-Alpha Tocopherol

    The Nordic Naturals Omega-3 Pet Liquid Supplement gets our pick for premium choice of fish oil. This oil is made using both ethical and sustainable practices and is derived from wild, fresh fish. Nordic Naturals supplements are bottled in a facility that is FDA-certified.  Sardines, mackerel, anchovies, and herring make up the fish oil in this product and all fish are caught off the coast of Iceland.

    Nordic Naturals is made without any artificial colors, flavors, or preservatives, and goes through a purification process to remove that fishy smell and taste that is a common complaint about many other products.

    This product is more on the expensive side and comes in only a 2 fluid ounce bottle, so it does not last very long when used as a frequent supplement. Another perk to Nordic Naturals is the third-party testing the oil goes through for safety and efficacy.

    Pros
    • Is third party tested
    • High potency
    • Made with ethical practices
    • Purified to remove fish smell and taste
    Cons
    • Expensive
    • Small bottle
    • Does not last long
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    4. Vetoquinol Care Triglyceride Omega Liquid Supplement – Best for Kittens

    Vetoquinol Triglyceride OMEGA Omega-3 Fatty Acid Liquid Supplement for Cats

    Supplement Form Liquid
    Quantity 8 fl oz
    Ingredients Fish Oil, Dl-Alpha Tocopherol (Source of Vitamin E), Vitamin A Palmitate, Vitamin D3, Eicosapentaenoic Acid, Docosahexaenoic Acid

    Vetoquinol Care Triglyceride Omega Liquid Supplement is designed to provide relief from skin irritation, allergies, or skin disease and to help improve mobility and joint issues.  The included AllerG-3 contains fish oil that meets USP Quality Standards in the natural, or triglyceride form which is more bio-available than either the ethyl ester or free fatty acid forms.

    This supplement is designed for pets of all ages and owners love that it is free of the overwhelming fishy smell that some other fish oil products contain. This oil is reasonably priced, and users have noticed some improvement in the softness of the coat.

    The biggest downside to this product according to the reviews is that some cats turned it down when offered for unknown reasoning. There were some complaints about faulty pumps.

    Pros
    • Bioavailable
    • Reasonably priced
    • Free of fishy smell
    Cons
    • Finicky cats may turn it down
    • Some reports of a faulty pump
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    5. TerraMax Pro Premium Omega-3 Fish Oil

    TerraMax Pro Premium Omega-3 Fish Oil Dog Supplement

    Supplement Form Liquid
    Quantity 16 fl oz
    Ingredients Premium Sardines, Herring, Anchovy, Mackerel

    TerraMax Pro Premium Omega 3 Fish Oil comes well-reviewed by both dog and cat owners. This oil is derived from sardines, herring, anchovy, and mackerel. This product is of pharmaceutical quality and is molecularly distilled to remove all toxins.

    TerraMax is certified mercury-free with no detectable levels of PCBs, heavy metals, pesticides, or dioxins. There are no fillers in this oil and is a great source of EPA and DHA. The typical fish oil smell is hardly noticeable in this oil and cats take to it very well.

    Reviewers have complained that the pumps are sometimes faulty and bottle leakage issues have occurred. This can be very inconvenient due to the contents and messiness of fish oil.

    Pros
    • Contains EPA and DHA
    • Distilled for purity and potency
    • No fillers, toxins, or artificial ingredients
    Cons
    • Faulty pump
    • Bottle may leak
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    6. Vital Pet Life Wild Alaskan Salmon Oil

    Vital Pet Life Wild Alaskan Salmon Oil Skin & Coat Health Liquid

    Supplement Form Liquid
    Quantity 32 fl oz
    Ingredients Wild Alaskan Salmon Oil

    Vital Pet Life supplement is derived from wild salmon caught off the coast of Alaska. Salmon oil is naturally packed with omega-3 fatty acids. This product is made in the USA and gets great reviews regarding cats taking well to the taste.

    Users have raved about the ease of measuring and dosing the liquid thanks to the high-quality construction of the bottle. Of course, certain cats will refuse to consume the liquid for unknown reasons, whether it be taste-related, smell-related, or simply unwillingness to try something new.

    This oil does have a stronger fishy smell but thanks to the bottle holding up well, there are not a lot of reports of leakages or mess.

    Pros
    • Made in the USA
    • Derived from wild Alaskan salmon
    • Great taste
    • Easy to measure and dose
    Cons
    • Strong odor
    • Certain cats will refuse to consume the oil on their food
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    7. Iceland Pure Pet Products Unscented Pharmaceutical Grade Salmon Oil

    Iceland Pure Pet Products

    Supplement Form Liquid
    Quantity 33 fl oz
    Ingredients Wild-Caught Alaskan Salmon

    Iceland Pure is derived from salmon and is high in both EPA and DHA. This product is rich in Omega 3 and Omega 6 fatty acids and comes filtered to reduce fish smell but preserve the flavor cats enjoy. Reviewers have advised that they noticed a quick improvement in their pet’s coat after beginning supplementation with Iceland Pure.

    The bottle is made up of eco-friendly, non-toxic brushed aluminum. Some reviewers did state that while they loved the aluminum bottle, they had a faulty pump that caused a lot of inconveniences. Of course, some cats did turn their noses up at the oil. Overall, this is a well-reviewed and well-liked supplement for many pet owners.

    Pros
    • Eco-friendly bottle
    • Filtered to reduce fish smell but preserves taste
    • High in EPA and DHA
    Cons
    • Faulty pump
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    8. PetHonesty Wild Alaskan Salmon Oil

    PetHonesty Wild Alaskan Salmon Oil

    Supplement Form Liquid
    Quantity 32 fl oz
    Ingredients Wild-Caught Alaskan Salmon

    PetHonesty Omega-3 Fish Oil Dog & Cat Supplement contains fish oil is made from sardines, mackerel, anchovies, and herrings that were caught off the coast of Iceland. This liquid fish oil supplement goes through a purification process to eliminate the fishy odor.

    PetHonesty contains DHA, EPA, and many other important vitamins and minerals such as B12, B3, D3, B6, biotin, choline, potassium, and selenium for ext5ra nutritional support. The biggest complaints about this fish oil were that the bottles have issues with leaking and some pumps were faulty.

    Some reviewers complained that their cat did not want to consume the oil for unknown reasons, but that is not too unusual considering how finicky cats can be. Proceeds from purchasing this fish oil are donated to no-kill animal shelters.

    Pros
    • Includes extra vitamins and minerals
    • Made with sustainable practices
    • The portion of profits go to no-kill animal shelters
    Cons
    • Bottle may leak
    • Faulty pumps
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    9. 21st Century Essential Pet Alaska Wild Salmon Oil Soft Chews

    21st Century Essential Pet Alaska Wild Salmon Oil

    Supplement Form Soft Chew
    Quantity 100 Count
    Ingredients Salmon Oil, Brewer’s Dried Yeast, Vegetable Glycerin, Dried Cheese, Liver Meal, Corn Starch, Natural Flavors, Water, Calcium Silicate, Yucca Schidegera Extract, Soy Lecithin, Calcium Propionate, Sorbic Acid, Vegetable Oil, Mixed Tocopherols, Rosemary Extract, Green Tea Extract

    These tasty, veterinarian-formulated chews from 21st Century are made in the USA with human-grade ingredients. These chewable are manufactured in an FDA-registered facility and undergo laboratory testing for safety and quality.

    The company states the oil is derived from non-farm-raised Alaskan salmon and is Rich in Omega-3 fatty acids, EPA and DHA. There are some extra ingredients in these chews as opposed to strictly fish oil liquids. There is 100 chewable per container and the product is fairly priced.

    They do come in lower on the list due to the added vegetable oil, corn starch, and extra ingredients. Some more finicky cats do not prefer the taste of chewable and may refuse to consume them.

    Pros
    • Contain EPA and DHA
    • Fair price
    • Less mess
    Cons
    • Certain cats do not enjoy the taste and will refuse them
    • Extra ingredients
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    10. Hanzi Pets Tru-Krill

    Hanzi Pets Tru-Krill Antarctic Krill Oil Omega-3

    Supplement Form Soft Chew
    Quantity 60 Count
    Ingredients Too many to list (see product description)

    Hanzi Pets Tru-Krill are the krill-based alternative to fish oil that still contains a great amount of EPA and DHA. These soft chews are free of pollutants and toxins such as mercury, heavy metals, and PCBs. Hanzi Pets is produced in the USA in an FDA-inspected facility under cGMP practices to ensure quality and safety standards are met.

    Krill oil does contain a lower amount of DHA, and EPA compared to some fish oils, but cat owners have had great success regarding taste and consumption. They do contain some extra ingredients in comparison to pure fish oil products, which is typical of chews.

    Pros
    • Great taste
    • Less mess
    • Made in the USA at an FDA-inspected facility
    Cons
    • Extra ingredients
    • Strong odor

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    Buyer’s Guide

    Things to Consider Before Making Your Purchase

    Ingredients

    Checking ingredients is the most important part of choosing a supplement for your cat. With Omega 3 fish oils, you want a product that contains EPA and DHA. You also want to ensure your fish oil is not made with any unnecessary ingredients or harmful toxins. Because this is coming from fish, ensuring the oil has been distilled for purity and to remove mercury, pesticides, and dioxins.

    Supplement Form

    Fish oil supplements can come in both liquid and pill forms. As you can see, liquids are more common but both types are relatively easy to come by. You will want to choose the type of Omega 3 fish oil that your cat will tolerate best.

    Some cats may consume the fish oil liquid with ease, while others may turn away. This is dependent on your preference and that of your animals. Liquid can be conveniently added to your cat’s food and may even entice them more.

    Liquids can also be messier, and you run the risk of faulty pumps and bottle leaks. It’s no fun having an oil mess to clean up, and some of the oils still have that unpleasant fishy smell.

    cat having medication
    Image Credit: New Africa, Shutterstock

    Testing

    Supplements are not regulated in the same way that conventional drug and food products are. Keep a close eye on the testing done for supplements such as Omega 3 fish oils. If a product has been independently tested by a third party for purity, that can provide you more certainty that you are getting a well-rounded, high-quality product.

    NASC Quality Seals can be found on brands that meet strict requirements regarding quality. Also, research the manufacturer and look and see if they offer satisfaction or money-back guarantees on their products.

    Price

    Fish oil can be a pricey supplement. You will want to ensure you are getting good value for your money. Some oils can be expensive and only contain a small amount of liquid, while others can have much more in quantity and still offer a great value. Be sure to check bottle size for liquid supplements and dosage and quantity for pills. Keep in mind that products that get additional testing and go through strict quality processing may come at a much higher price. It can be well worth the extra cost to get a great quality fish oil.

    maine coon cat having treat
    Image Credit: Nils Jacobi, Shutterstock

    Benefits of Supplementing with Omega 3 Fish Oil Supplements

     

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    Conclusion

    Zesty Paws Core Elements Wild Alaskan Salmon Oil not only comes at a reasonable price for the quantity but is a very well-reviewed fish oil complete with DHA and EPA and made from pure wild Alaskan salmon oil.

    American Journey Wild Alaskan Salmon Oil offers you great value for your money, has the necessary DHA and EPA, and is made from salmon and pollock.

    Nordic Naturals Omega-3 Pet Liquid Supplement may be on the expensive side and have a much smaller quantity, but it makes up for it in quality. It is a high potency, made with sustainable practices, and is third-party tested.

    Now that you know what the reviews have to say and are aware of the considerations to keep in mind while shopping, you should be well on your way to finding the right fish oil supplement for your cat.

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    Featured Image Credit: Velement, Shutterstock