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Home > Cats > 10 Best Fish Oil Supplements for Cats in 2024 – Reviews & Top Picks

10 Best Fish Oil Supplements for Cats in 2024 – Reviews & Top Picks

Fish oil is known to treat many different problems in felines. For instance, fish oil has been shown to reduce inflammation, and it may also help with skin and coat health. Some vets recommend it for arthritis because it reduces inflammation.

Cat given CBD Oil No matter why you’re looking to supplement your cat’s meals with fish oil, there are many different options on the market. Preferably, you want a pure supplement that works.

Read our reviews for information about the 10 best fish oil supplements available on the market.

divider-catA Quick Comparison of Our Favorites of 2024

Image Product Details
Best Overall
Winner
PetHonesty Omega-3 Fish Oil PetHonesty Omega-3 Fish Oil
  • Contains both DHA and EPA
  • Low in mercury
  • Bottled in a GMP-certified facility
  • Best Value
    Second place
    GNC Pets Wild Salmon Cat Oil Cat GNC Pets Wild Salmon Cat Oil Cat
  • Inexpensive
  • Full of omega fatty acids
  • Consumed of natural oils
  • Premium Choice
    Third place
    Finest for Pets Omega-Rich Fish Oil Finest for Pets Omega-Rich Fish Oil
  • Made with only fish oil
  • May help with shedding problems
  • Easily mixes with food
  • American Journey Alaskan Salmon Oil American Journey Alaskan Salmon Oil
  • Contains both DHA and EPA
  • Includes two sources of omega fatty acids
  • Drip-free cap
  • Zesty Paws Core Salmon Oil for Cats Zesty Paws Core Salmon Oil for Cats
  • Sourced from Alaska
  • Purified
  • Teaspoon dosage
  • The 10 Best Fish Oil Supplements for Cats

    1. PetHonesty Omega-3 Fish Oil Supplement — Best Overall

    PetHonesty Omega-3 Fish Oil Supplement (1)

    Product Form:  Liquid

    The PetHonesty Omega-3 Fish Oil Supplement is the best fish oil supplement for cats on the market. It is made using the oil of sardines, mackerel, anchovies, and herring, which are all caught off the coastal waters of Iceland. This fish oil contains both DHA and EPA, which are essential components of the benefits that often come with fish oil.

    All the fish that this brand includes are low in mercury. Too much mercury can be a serious problem for many cats. Furthermore, this supplement is completely free from hormones and chemicals. It is tested for potency and purity.

    This supplement is bottled in a GMP-certified facility. It is then also purified to reduce the fishy smell and taste.

    Pros
    • Contains both DHA and EPA
    • Low in mercury
    • Bottled in a GMP-certified facility
    • Purified to remove fish smell
    • Free from hormones and chemicals
    Cons
    • Pump doesn’t always work

    2. GNC Pets Wild Salmon Oil Cat Supplement — Best Value

    GNC Pets Ultra Mega Wild Salmon Oil Cat Supplement (1)

    Product Form:  Liquid

    GNC Pets Ultra Mega Wild Salmon Oil Cat Supplement is made with a variety of different natural oils, including salmon oil and sunflower oil. It is designed to provide plenty of fatty acids that your cat needs to thrive. This formula is suitable for adult cats and may even help manage shedding in some felines.

    It is full of omega fatty acids, which is exactly what you’re looking for in these products. This formula also has a savory fish flavor, so if your cat likes fish, they will readily take this formula.

    We highly recommend this fish oil as the best fish oil supplement for cats for the money. It is extremely inexpensive, but it still includes everything that your feline needs.

    Pros
    • Inexpensive
    • Full of omega fatty acids
    • Consumed of natural oils
    • Manages shedding
    Cons
    • Plant-based oils included

    3. Finest for Pets Omega-Rich Fish Oil Pet Supplement – Premium Choice

    Finest for Pets Omegease Omega-Rich Fish Oil Dog & Cat Supplement (1)

    Product Form:  Liquid

    For those with plenty of money to spend on their felines, we recommend Finest for Pets Omegease Omega-Rich Fish Oil Dog & Cat Supplement. It’s perfect for cats with itchy skin or shedding problems, as that’s exactly what this supplement is designed for.

    This supplement easily mixes with food and doesn’t have much of a taste. Therefore, you should be able to sneak it into your cat’s meals without a problem.

    This supplement is made with only fish oil, so it is highly recommended. There are no filler oils in this supplement, unlike many others out there. Plus, it is made with low-mercury fish, like herring and mackerel.

    Pros
    • Made with only fish oil
    • May help with shedding problems
    • Easily mixes with food
    • No strong taste
    • Made with low-mercury fish
    Cons
    • Expensive

    4. American Journey Wild Alaskan Salmon Oil Formula

    American Journey Wild Alaskan Salmon Oil Formula (1)

    Product Form:  Liquid

    American Journey is a popular dog food company that makes various other products. The American Journey Wild Alaskan Salmon Oil Formula is one of them. This blend is made from both Alaskan salmon and pollock. Both sources are great sources of omega fatty acids. Therefore, this formula supports your cat’s skin and coat health.

    This formula can improve your cat’s brain and vision with both DHA and EPA.

    The flavoring is not removed, meaning this formula will taste fishy. For many cats, this is a benefit. However, some cats don’t like this flavor.

    This bottle also comes with a drip-free cap in a convenient design that makes it easy to add to your cat’s food.

    Pros
    • Contains both DHA and EPA
    • Includes two sources of omega fatty acids
    • Drip-free cap
    • Flavoring is not removed
    Cons
    • Tastes a bit fishy
    • Strong smell

    5. Zesty Paws Core Elements Supplement

    Zesty Paws Core Elements Supplement (1)

    Product Form:  Liquid

    Like most other formulas, Zesty Paws Core Elements Supplement is high in both EPA and DHA. These omega fatty acids are necessary for the health of your cat’s skin and coat, so they must be included in this supplement.

    This formula is completely sourced from Alaska, contributing somewhat to the high price. That said, just because it is from Alaska doesn’t mean the fish used are high-quality. We don’t have much information on exactly which fish are used.

    The taste and smell are removed from this formula through a purification process. Therefore, it should allow you to sneak it into your cat’s food, even if they don’t like fish flavors.

    All you need to do is add one teaspoon of this liquid to your pet’s meal, which should be enough to benefit your cat.

    Pros
    • Sourced from Alaska
    • Purified
    • Teaspoon dosage
    • Contains EPA and DHA
    Cons
    • Smells bad (despite being purified)
    • Expensive

    6. Animal Essentials Ocean Supreme Fish Oil Cat Supplement

    Animal Essentials Ocean Supreme Fish Oil Cat Supplement (1)

    Product Form:  Liquid

    The Animal Essentials Ocean Supreme Fish Oil Cat Supplement is created with fish from Iceland, the location of some of the world’s cleanest and most sustainable fisheries. This fish oil is incredibly high-quality for this reason. However, you’ll have to pay a high price for sustainability. This product is much more expensive than most other options on the market.

    This formula contains no artificial preservatives, colorings, or flavorings. It is completely all-natural and fortified with vitamin E. You must refrigerate it after opening—that’s how natural it is.

    That said, this bottle is made out of plastic, not glass. This plastic isn’t necessarily BPA-free.

    Pros
    • No artificial preservatives
    • Fortified with vitamin E
    • Made from clean fish oil
    Cons
    • Comes in a plastic bottle
    • Expensive

    7. Vetoquinol Flexadin Advanced with UCII

    Vetoquinol Flexadin Advanced with UCII (1)

    Product Form:  Chew

    The Vetoquinol Flexadin Advanced with UCII is full of omega fatty acids, though it is for joint health in particular. Vitamin E is also included, which can improve the health of your cat’s skin and coat. There’s a type of collagen that may also help improve joint support.

    These chews are quite palatable. Many users reported that their cats ate them perfectly fine, while others reported that they didn’t. That said, it depends on your cat’s preferences.

    There are a few low-quality ingredients in this formula. For instance, canola oil is included.

    Pros
    • Palatable and tasty
    • Vitamin E included
    • High in omega fatty acids
    Cons
    • Low-quality ingredients
    • Includes canola oil
    • Expensive

    8. Nutramax Cosequin Soft Chews Joint Supplement for Cats

    Nutramax Cosequin Soft Chews Joint Supplement for Cats (1)

    Product Form:  Chewy

    The Nutramax Cosequin Soft Chews Joint Supplement for Cats is a solid option for most felines. It is specifically designed to be a joint supplement, so it is high in various joint-supporting ingredients, like glucosamine, manganese, and chondroitin. These may all improve your cat’s joint health.

    This formula is made in the U.S.A. It is supposed to be tasty and chewable, according to the advertisement. Many users also reported that their cats ate them just fine. However, other users said their feline did not want to eat them.

    This formula is not soft, so some cats had trouble eating it.

    Pros
    • Glucosamine and other joint-supporting ingredients included
    • Chewable texture
    Cons
    • Hard to get some cats to eat
    • Not just omega fatty acids

    9. Nordic Naturals Omega-3 Pet Liquid Supplement

    Nordic Naturals Omega-3 Pet Liquid Supplement (1)

    Product Form:  Liquid

    The Nordic Naturals Omega-3 Pet Liquid Supplement is full of omega fatty acids, as the name suggests. It is derived solely from low-mercury fish, making it one of the better options on the market. Furthermore, this supplement is purified to remove any impurities. It is also third-party tested, so you can rest assured that it is truly pure.

    This formula is completely liquid, so it is quite easy to mix into your cat’s food. It doesn’t have a strong flavor so that most cats will eat it without much of an issue. However, there are some reports of cats disliking it. The dropper on this formula is sometimes low-quality and doesn’t work as expected. For the price of this product, this is disappointing.

    Pros
    • Purities
    • Low-mercury
    • Third-party tested
    Cons
    • Poor dropper
    • Disliked by some cats
    • Some reports of sickness

    10. Vital Pet Life Wild Alaskan Salmon Oil Supplement

    Vital Pet Life Wild Alaskan Salmon Oil Supplement (1)

    Product Form:  Liquid

    The Vital Pet Life Wild Alaskan Salmon Oil Supplement contains omega fatty acids. It derives these from salmon oil, so it is low in mercury. The omega fatty acids may also help improve your pet’s immune system. This formula is specifically designed to reduce itching and shedding.

    However, this formula doesn’t contain any other supplements. So, it is just omega fatty acids. This may be good or bad, depending on what you’re looking for. This formula is made in the U.S.A., so you can expect it to be developed according to high safety standards.

    Pros
    • Only omega fatty acids
    • Made in the U.S.A.
    Cons
    • Doesn’t appear to be as effective as some other options
    • Not that yummy

    divider-cat

    Buyer’s Guide: Selecting the Best Fish Oil Supplement for Cats

    Omega fatty acids such as EPA and DHA can be helpful in many different situations. They are often recommended for cats with joint problems, such as older cats and those with pre-existing joint issues. Supplements may also be used for felines with skin and coat issues. For instance, if your cat has skin allergies, omega fatty acid supplements can be helpful.

    However, these supplements are not all made the same. We developed the following guide to help you choose the best option for your feline.

    cat taking CBD oil
    Image By: Erin Stone, Pixabay

    Purity

    If you’re looking for omega fatty acids to give to your cat, you should first ensure that the supplement that you purchase actually contains omega fatty acids. Otherwise, they may include other impurities. While these impurities may not be harmful, they do water down the formula, which may cause it not to work as well.

    Therefore, a purified formula is essential. It also helps if it’s third-party tested. You can’t always trust the purity standards set by the company. However, you can trust reports by third-party individuals. Simply put, you want the purest product possible.

    Other Additives

    In some cases, the formula may include other ingredients. For instance, some joint-supporting supplements, such as glucosamine, include ingredients that may also support joint health.

    This is often quite useful if you want an overall supplement to help your feline. However, this is not the best option if you’re just looking for omega fatty acids. Therefore, you should ensure that you’re getting pure omega fatty acids, not a supplement containing something else.

    Source of Omega Fatty Acids

    Preferably, you should be able to find a supplement with actual fish oil. Fish oil contains both EPA and DHA in suitable ratios for cats. It is high in omega-3s, not omega-6s, so it is generally healthier than some other options out there.

    However, many supplements contain other oils to “support” the fish oil. These are often low-quality and not nearly as helpful. For instance, the formula may be diluted with canola oil and similar oils.

    These oils do contain omega fatty acids. However, they do not include as much EPA and DHA as fish oil and often contain more omega-6 fatty acids instead.

    Basically, don’t pay top price for fish oil that is diluted with other oils.

    giving cat cbd oil
    Image By: New Africa, Shutterstock

    Mercury Levels

    You should try to check the mercury levels in fish oil supplements. If the fish oil is made with a mercury-high fish, the supplement will contain concentrated forms of mercury. Mercury in high amounts can cause serious problems for cats, so be cautious.

    There is no agency that monitors the mercury content in fish oil. So, because it is on the market, that doesn’t mean it is safe. Therefore, look for oils that are made with low-mercury fish. Herrings, sardines, and other fish are common.

    divider-catConclusion

    There are many quality omega fatty acids supplements on the market. However, we liked the PetHonesty Omega-3 Fish Oil Supplement the most. It is made with pure omega fatty acids and isn’t that expensive, unlike some other options.

    However, if you’re on a budget, GNC Pets Ultra Mega Wild Salmon Oil Cat Supplement is another option. It is a bit less expensive than most other products on the market, but it is still quite high-quality.

    Any of the omega fatty acids supplements in our reviews list can be a great choice for your feline, though. We hope that our explanations of each product have helped you figure out the best supplement for your feline.


    Featured Image Credit: Erin_Hinterland, Pixabay

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