Get

In Your Inbox

Catster is reader-supported. When you buy via links on our site, we may earn an affiliate commission at no cost to you. Learn more.

Omega 3 For Cats: Our Vet Discusses Benefits, Diet & Supplementation

Share

Several capsules of fish oil with curious cat in the background

Omega 3s are a type of fatty acid that is a nutritional component of some foods. Omega 3’s can also come in the form of a supplement; they have some benefits for cats and are generally very safe to use. Read on to learn more about omega-3 fatty acids for cats.

divider cat paw scratch oct 2024

What Are Omega 3s?

Omega 3 fish oil capsules spilling out of a bottle on a white background
Image Credit: Anyashka Kim, Shutterstock

Chemically, a fatty acid is a molecule made from carbon chains with hydrogen and oxygen groups attached. The omega fatty acids (omega 3s and 6s) are unsaturated fats, meaning there is at least one double bond between carbon atoms on the chain. Unsaturated fats are healthy and essential in feline nutrition for use in the body. Omega 3’s are anti-inflammatory.

Alpha-linolenic acid (ALA), eicosapentaenoic acid (EPA), and docosahexaenoic acid (DHA) are all omega 3 fatty acids. Cold water fish oils are the best source of DHA and EPA in cats and provide these in concentrated amounts far higher than in pet foods.

DHA is also in microalgae oil. Flaxseed oil contains ALA, but cats cannot effectively convert this to other omega-3s, so it’s less useful for cats. The cats also usually like the fishy taste of fish oils better than flaxseed oil.

Omega 3 supplements and diets are used for:
  • Anti-inflammatory properties: Omega 3s may improve allergies and auto-immune conditions. A study showed that fish and flaxseed oil were effective in reducing skin inflammation.1
  • Chronic kidney disease: A study showed that cats with chronic kidney disease receiving a diet high in EPA had the longest survival time.2
  • Fish oils: They can be beneficial for pets with heart disease, as they are in people, but more research is needed.
  • Cancer: Omega 3s are thought to have an anti-cancer effect. A study in dogs with lymphoma showed that dogs supplemented with fish oil and arginine lived longer than the control group fed soybean oil.3
  • Arthritis: One study showed that owners who supplemented their arthritic cats with EPA and DHA saw an improvement in their mobility.4 Another study showed objective improvements with EPA, DHA, glucosamine, chondroitin, and green-lipped muscle supplementation in cats.5

The ratio of omega 6 to omega 3 in the diet is important. However, there is little evidence about how much of each is recommended, and this ratio is not regulated in cat food. Some experts suggest a 10:1 ratio could be appropriate. The type of omega-3 present is also important, with EPA being the most therapeutic.

Supplementation is also complicated by the amount of these nutrients in the diet, which could lead to an imbalance or even an overdose if not taken into account. Unfortunately, all this information is not readily available on many commercial products.

The Americal Association of Feed Control Officials (AAFCO) requires that kitten diets contain 0.012% EPA and DHA.  DHA is an essential nutrient in kitten food as it helps develop healthy brains and eyes in growing kittens. DHA and EPA could be considered essential in adult cats, but as there is no known optimal or minimum value, they are not regulated by AAFCO.

How Are Omega 3’s Given?

To start your cat on omega-3s, you can change their food to one fortified with them. You can also purchase a supplement and add it to their regular meals. These are generally liquids added as a topper onto their meals or capsules with liquid inside that are either administered as a pill or broken open and mixed into their meal.

You can purchase a supplement designed for cats and follow the dosage and storage instructions on the bottle. If your cat food already contains additional omega-3s, we would recommend talking to a vet about any additional supplements.

What Happens if You Miss a Dose?

Don’t worry if you miss a dose of your omega-3 supplement. This is not a medication, and your cat will not be harmed. Simply give the next dose as scheduled. However, if you continually miss doses, the supplement’s benefits may be reduced.

The cat sniffs fish oil capsules in hands
Image Credit: Vladimir Sukhachev, Shutterstock

Potential Side Effects of Omega 3’s

Omega 3s are generally safe within the doses used in pet foods.

However, some cats, especially those receiving too much, may show signs like:
  • Diarrhea
  • Vomiting
  • Lethargy
  • Fishy smell in breath or skin

A single overdose is unlikely to cause serious problems, but it is theoretically possible for blood clotting problems to occur in extreme cases. If you notice abnormal bleeding or bruising on your cat, seek veterinary care urgently.

divider 3 paws

Frequently Asked Questions (FAQ)

How Do I Fix My Cat’s Itchy Skin?

Itchy skin can result from anything from parasites to allergies. You should visit the veterinarian for a complete treatment plan, which may include medication or a change in diet.

However, while you wait for a vet appointment, making sure your cat is on parasite prevention, supplementing with omega 3s, and washing with a medicated shampoo are excellent steps.

Cat wearing collar scratching and itching
Image Credit: AlexanderDubrovsk, Shutterstock

What Other Treatments Are Available For Arthritis?

In addition to joint supplements that include omega-3s, there are medications that can reduce the signs of arthritis. A vet can prescribe medication that provides pain relief in an oral or injectable form. They can also prescribe injections that will improve the quality of the joint, effectively improving your cat’s mobility.

How Do I Look After My Cat With Chronic Kidney Disease?

Chronic kidney disease is progressive, but the cats who live the longest are on a diet high in EPA, so include this in your cat’s diet. Keep up with regular veterinary visits to monitor your cat for signs like high blood pressure, anemia, and electrolyte balances that require additional treatment.

Make sure your cat stays hydrated, and encourage water intake by providing a water fountain.

divider 2 cats

Conclusion

Unsaturated fatty acids like omega-3s can be a helpful addition to the treatment of many feline health problems. Over-the-counter formulations designed for cats are safe and inexpensive, and you can add them to your cat’s diet. Alternatively, you can purchase a formula fortified with omega-3s and gradually transition your cat to the diet.


Featured Image Credit: hpphtns, Shutterstock

Want content like this delivered to you?

Sign Up For Our Newsletter

News, insights, expert advice, and everything cat

* By submitting, you agree to our Terms & Conditions and Privacy & Cookies Policy.




How useful was this post?

Click on a star to rate (you can leave written feedback after clicking submit)

Help us improve Catster for pet parents!

Your feedback really matters.

What did you like about this post? Also how can we improve it?

Join the conversation

Leave a Reply

You’re very welcome to leave a comment or question. Please know that all comments must meet our community guidelines, and your email address will NOT be published. Let’s have a positive and constructive conversation.


Catster's Digital Magazine is Back!

Vet-approved health & behavior advice

Real cat stories & community features

Chatting About the Importance of Spaying/Neutering, Cat Retail Shopping Ban & Red-Level Storms | Chatty Cattys, Episode 30

In this episode of Catster’s Chatty Cattys podcast, Nicole and Dr. Karyn are celebrating a major legal win for pets before diving into...

Is Your Cat Happy? Here’s How You Can Tell

Cats have a reputation for being indifferent, even inscrutable. But despite their seemingly ambivalent appearance, cats experience many emotions, including happiness, and they...

Human Brains Age Like Cats – New Study Debunks the 7-Year Rule

If you’ve ever caught your senior cat staring blankly at a wall, wandering the halls at 3 am, calling out for no clear...

Chatting with Devin About Here! Have a Kitten, Fostering, & Why Two Are Better Than One | Chatty Cattys, Episode 29

In this episode of Catster’s Chatty Cattys podcast, Nicole & Dr. Karyn sit down with Devin, the founder and one-woman show behind “Here...

More related

How To Litter Train An Older Cat: 12 Vet-Approved Steps

If you have an older outdoor cat who needs to start living inside, you may be wondering if it’s possible to train them...

3-Month-Old Kitten: What to Expect (Vet Approved)

Like children, baby cats go through specific stages of growth and development during their first year of life. As a pet parent, it’s...

How Can I Make My Cat Like Me? Lessons From Zelda & Clutch

Hi, I’m Dr. Karyn! Read my introduction to learn more about me and meet my five hilarious cats: Clutch, Cyril, Alex, Zelda, and...

Mark Zemel Talks About His Documentary “The Purrtraitist”

A couple of years ago, the filmmaker Mark Zemel went to a cat show in Stamford, Connecticut, with his girlfriend as part of...

Keep reading

Purina Pro Plan Cat Food Review of 2026: Recalls, Pros & Cons

Review Summary Purina Pro Plan Cat Food is full of recipes that your feline friend is sure to love. With several lines and flavors to pick from, even the pickiest of eaters will love to eat these foods. The lines...

Purina Pro Plan Wet Cat Food Review

How to Take Care of Your Cat’s Teeth: 8 Vet-Verified Tips

Dental problems are pretty common in cats. When plaque sits on their teeth, it hardens and develops into tartar. Tartar around the gum line causes irritation and inflammation that results in gingivitis, which can lead to full-blown periodontal disease and...

hand showing the teeth of blue tabby maine coon cat

Zen Clipper Cat Nail Trimmer (2026 Review)

Review Summary Nail trimming is an essential part of cat ownership to keep your kitty’s nails in tip-top shape while also protecting your furniture and yourself from unnecessary scratches. But not all nail trimmers on the market are created equal....

Zen Clipper Cat Nail Trimmer

Can a Neutered Male Cat Still Get a Female Pregnant? Vet-Verified Facts

Neutering or spaying your cat is a crucial part of responsible pet ownership. It prevents accidental litters, some behavioral problems, and reproductive conditions and ensures you don’t contribute to overpopulation. However, a neutered male cat can still get a female...

tabby cats walking and twisting their tail to a heart shape

How to Dry a Cat After a Bath: Vet-Approved Step-by-Step Guide

You rarely find a cat that will gladly accept having a bath without putting up a fight. If your cat is as apprehensive as most others, you may want to make sure you’re doing everything correctly to minimize the agony...

gray cat newly bathe

When to Euthanize a Cat? Vet-Reviewed Factors & FAQ

Watching a beloved family pet get old can be hard. As cats age, they will grow weaker and skinnier. Their behavior might change. They might not be the same cat that you used to know when they were younger. In...

a sick siberian cat being carried by owner

Why Cat Ear Sores Shouldn’t Be Ignored (Even Small Ones)

You’re giving your cat a head scratch when your fingers catch on something rough. You pull your hand back and look closer – there’s a scab on the edge of their ear. A crusty patch. Maybe some hair loss around...

close up cat with eye sore

Does Steam Cleaning Kill Fleas? Vet-Approved Effectiveness & Safety Explored

If your cat has fleas and they’ve also infested your home, we feel your pain. If you’re contemplating reaching for the phone to call in a steam cleaner, it’s important to note that using a steam cleaner will indeed kill...

cleaning sofa with a steam cleaner

Love Cats? So Do We! Join the Catster Community

Stay informed with expert pet care insights delivered straight to your inbox! Discover professional guidance on animal behavior, feeding tips, trusted product picks, and much more.




Sign up for the Catster Email Newsletter

Stay informed with expert pet care insights delivered straight to your inbox! Discover professional guidance on animal behavior, feeding tips, trusted product picks, and much more.