10 Best Fish Oil Supplements for Cats in 2026 - Reviews & Top Picks

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.

A Quick Comparison of Our Winners in 2026

Rating	Image	Product	Details
Best Overall		Zesty Paw Alaskan Salmon Oil	Made from wild Alaskan salmon Contains EPA and DHA Great taste	Check Price
Best Value		Dr. Joseph’s VetPro 100% Pure Alaskan Salmon Oil	Affordable Easy to use Improves skin and coat	Check Price
Premium Choice		Nordic Naturals Omega-3 Pet Supplement	Is third party tested High potency Made with ethical practices	Check Price
		Alaska Naturals Wild Cat Supplement	Supports skin and coat health Contains omega-3s Easy to mix into food	Check Price
		Fera Pet Organics Vegan Omega-3s Supplement	Ideal for cats with seafood sensitivities Supports skin, coat, brain, heart, and immune health Mixes easily into food	Check Price

The 10 Best Fish Oil Supplements for Cats

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

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.

2. Dr. Joseph’s VetPro 100% Pure Alaskan Salmon Oil – Best Value

If you are looking for a money-saving fish oil, we have to recommend Dr. Joseph’s VetPro 100% Pure Alaskan Salmon Oil. It is a super affordable choice. In fact, we think it is the best fish oil for cats for the money considering the amount of product you get for the price.

We all know our cats need a bounty of omega fatty acids and taurine to nourish their bodies. This fish oil will improve their overall skin and coat quality as well as strengthen muscle and organ function.

There are very healthy aspects to this oil, like EPA, DHA, and healthy fats. This particular salmon oil is in oil form, so you can simply squirt it on their standard everyday food. We think this oil is easy to add, effective in purpose, and tasty for cats. However, some people say the bottle was leaking when it arrived.

3. Nordic Naturals Omega-3 Pet Liquid Supplement– Premium Choice

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.

4. Alaska Naturals Wild Alaskan Pollock Oil Cat Supplement

Alaska Naturals Wild Alaskan Pollock Oil Cat Supplement is a liquid omega-3 supplement formulated to support healthy skin, coat condition, immune function, and joint health in cats. Made from sustainably sourced wild Alaskan pollock, the oil contains naturally occurring EPA and DHA fatty acids that may help maintain skin moisture and promote a softer, shinier coat. The liquid format allows pet owners to mix the supplement directly into meals, making administration easier for cats that resist chewable supplements or capsules.

This formula is designed to provide a concentrated source of marine-based omega-3s without artificial fillers, making it a simple nutritional addition to regular feeding routines.

5. Fera Pet Organics Vegan Omega-3s Supplement

Fera Pet Organics Vegan Omega-3 is a plant-based alternative to traditional fish oil supplements, making it a strong option for cats with fish sensitivities or owners looking for a more sustainable omega source. Instead of fish oil, this formula uses marine microalgae to provide EPA and DHA fatty acids that support skin, coat, joint, heart, brain, and immune health. The oil also includes organic flaxseed and vitamin E for additional nutritional support.

Because the formula is fish-free, it may work well for cats with seafood allergies or pets that dislike the strong smell of traditional fish oils. Many pet owners report improvements in coat softness and dry skin after consistent use. The liquid format also makes it easy to mix into wet food or toppers, though some picky cats may still notice the flavor.

6. Vital Pet Life Supplement Wild Alaskan Salmon Oil

Vital Pet Life Supplement Wild Alaskan Salmon Oil 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.

7. Iceland Pure Pet Products Pharmaceutical Grade Salmon Oil

Iceland Pure Pet Products Pharmaceutical Grade Salmon Oil 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.

8. PetHonesty Wild Alaskan Salmon Oil

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.

9. Hanzi Pets Tru-Krill

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.

10. Vetoquinol Triglyceride Omega Liquid Supplement – Best for Kittens

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.

Buyer's Guide: Choosing the Best Fish Oil Supplements for Cats

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.

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. An experienced veterinarian can also be a great source of information on which supplement to choose for your cat.

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.

Benefits of Supplementing with Omega 3 Fish Oil Supplements

Our Fish Oil Supplements for Cats Selection Process

Catster’s dedicated team of writers and editors collaborate with expert veterinarians, considering a wide range of factors when selecting the best fish oil supplements for cats. These parameters include customer reviews, brand reputation, veterinary experience, and in some cases, hands-on testing. Of course, our cats have a say in the process, too! We strive to select and review the highest-quality products available, to help you choose the best possible product and make the most informed decision for your and your cat’s needs.

Why Trust Catster?

Catster has been a trusted online brand since 2001, so we know a thing or two about fish oil supplements for cats. We’re a team of cat-loving writers, editors, and veterinarians dedicated to helping you make the most informed decision for your feline. We deeply believe in providing the best information for cat owners to help their cats live their best life possible. We look at reviews from the most trusted sources available, and this, combined with our veterinary team’s experience and expertise, helps us gather the best options on the market. Our team is invested in the welfare and health of cats around the world, and believe that expert knowledge is one of the best ways to achieve this.

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.

Dr. Joseph’s VetPro 100% Pure 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.

• See Also: Dinovite for Cats: Vet-Approved Nutritional Supplement

Featured Image Credit: Velement, Shutterstock