Best Cat Omega-3 Supplements (2026) – Top 10 Reviewed
Omega-3 fatty acids are among the most beneficial nutrients you can add to your cat’s diet. From promoting a shiny coat and healthy skin to supporting heart, joint, and brain health, omega-3s play a vital role in your cat’s overall wellbeing. Most commercial cat foods don’t provide optimal levels of EPA and DHA—the two most important omega-3 fatty acids—which is why supplementation can make a real difference. In this guide, we’ve reviewed the best omega-3 supplements for cats to help you find the right product for your feline friend.
Our Top Picks at a Glance
- Best Overall: Nordic Naturals Omega-3 Cat – Third-party tested purity in a glass dropper bottle
- Best Value: Zesty Paws Wild Alaskan Salmon Oil – Omega-rich pump bottle at a great price
- Best Premium: Pet Protect Omega-3 Snip-Tip Capsules – Free-form EPA/DHA with precise dosing
Quick Comparison
| Product | Key Ingredients | Form | Servings | Best For |
|---|---|---|---|---|
| Nordic Naturals Omega-3 Cat | Wild Anchovy & Sardine Oil, 304mg Omega-3/mL | Liquid Dropper | 2 oz | Overall purity and quality |
| Zesty Paws Wild Alaskan Salmon Oil | Wild Alaskan Pollock & Salmon Oil | Liquid Pump | 8.5 oz | Budget-friendly daily omega |
| Pet Protect Omega-3 Snip-Tip Capsules | Free-Form EPA/DHA Blend | Snip-Tip Capsules | 60 | Precise, mess-free dosing |
| Freshly Bailey Omega-3 Fish Oil | Fish Oil, 330mg Omega-3/mL, EPA & DHA | Liquid | 4 oz | High-potency cat-specific oil |
| Pet Supplements Omega-3 Softgels | Wild Anchovy, Mackerel, Sardine Oil | Softgels | 180 | Capsule format for easy dosing |
| Iceland Pure Pet Salmon Oil | 100% Farmed Salmon Oil | Liquid Pump | 8.75 oz | Single-source salmon purity |
| Deley Naturals Wild-Caught Fish Oil | Anchovy, Sardine, Herring, Mackerel Oil | Liquid Pump | 16 oz | Large-format value bottle |
| Vetoquinol Triglyceride Omega-3 | Fish Oil, EPA & DHA in Triglyceride Form | Capsules | 60 | Veterinary-grade omega supplement |
| Liquid Health Pets Omega-3 for Cats | Wild-Caught Fish Oil, EPA+DPA+DHA | Liquid | 8 oz | Triple omega with DPA included |
1. Nordic Naturals Omega-3 Cat – Best Overall
- Why omega-3 cat - This Nordic Naturals pet product is made with the same exceptional quality oil as our human products, but has been specially formulated for your cat; Omega-3 Cat features omega-3 fish oil in liquid form
- Proactive protection for your cat - Research shows that the essential fatty acids EPA & DHA in fish oil help support your pet’s heart, skin & coat, immune health
- Give them the best - All of our omega-3 fish oils are in the triglyceride molecular form (the form naturally found in fish) for optimal absorption; Please use only our pet products for your cat, not our human products
- Purity guaranteed - Every batch of Nordic Naturals fish oil is crafted from fresh, wild-caught, omega-rich fish; We are committed to using only non-GMO, gluten- & dairy-free ingredients with no artificial colors, flavors, or preservatives
- ETHICAL INNOVATION - Nordic Naturals is proud to be at the forefront of sustainable & ethical practices in the natural products industry. Through science & innovation, we are committed to delivering safe, effective nutrients to support foundational wellness.
The gold standard in cat omega-3 supplementation, delivering third-party tested fish oil from wild anchovies and sardines in a precision glass dropper.
Nordic Naturals has earned a stellar reputation in the omega-3 world, and their cat-specific formula upholds every bit of that standard. Each mL delivers 304mg of omega-3 fatty acids in triglyceride form—the same molecular form found naturally in fish, which studies suggest is absorbed more efficiently than ethyl ester alternatives. The oil is sourced from wild-caught anchovies and sardines, small fish species that naturally have lower levels of contaminants.
Every batch undergoes third-party testing for purity, potency, and freshness, with results that surpass the strictest international standards. The glass dropper bottle protects the oil from plastic leaching and enables precise dosing. The unflavored formula makes it easy to mix into any food without altering the taste significantly.
What We Like
- Third-party tested purity that exceeds international omega-3 quality standards
- Triglyceride form provides superior bioavailability for better omega-3 absorption
- Glass dropper bottle ensures both precise dosing and contamination-free storage
What Could Be Better
- 2-ounce bottle is small and pricey compared to larger liquid alternatives
- Unflavored oil may not entice cats that prefer flavored supplements
Bottom Line: Nordic Naturals delivers the purest, most rigorously tested omega-3 for cats—if quality and purity are your top priorities, this is the clear winner.
2. Zesty Paws Wild Alaskan Salmon Oil – Best Value
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A best-selling omega-3 blend from wild Alaskan pollock and salmon with a pump dispenser that makes daily dosing effortless.
Zesty Paws consistently ranks among Amazon’s top-selling pet supplements, and their Wild Alaskan Salmon Oil offers serious omega value. The formula blends wild-caught Alaskan pollock and salmon oils to deliver a comprehensive profile of omega-3, omega-6, and omega-9 fatty acids. EPA and DHA support skin, coat, joint, heart, and immune health—making this a true multi-benefit daily supplement.
The 8.5-ounce bottle features a pump dispenser for clean, consistent dosing directly onto your cat’s food. At its price point, Zesty Paws offers one of the best cost-per-serving ratios in the omega-3 supplement market. It’s safe for both cats and dogs, which is convenient for multi-pet households.
What We Like
- Excellent cost-per-serving ratio makes daily omega supplementation affordable
- Wild-caught Alaskan fish provide a broad omega-3, -6, and -9 fatty acid profile
- Pump dispenser keeps hands clean and delivers consistent daily doses
What Could Be Better
- Plastic bottle doesn’t offer the same contamination protection as glass
- Not cat-specific, so dosing requires attention to size guidelines
Bottom Line: Zesty Paws offers the best balance of quality, quantity, and price for cat owners who want daily omega-3 supplementation without the premium price tag.
3. Pet Protect Omega-3 Snip-Tip Capsules – Best Premium
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Proprietary free-form EPA/DHA blend in pre-measured snip-tip capsules designed specifically for cats and small dogs.
Pet Protect takes a precision approach to omega-3 supplementation with their snip-tip capsule format. Each capsule contains a proprietary free-form blend of EPA and DHA that’s designed for optimal absorption. The snip-tip design lets you simply cut the end of the capsule and squeeze the oil directly onto food—no measuring, no mess, and perfect consistency every time.
With 60 capsules per package, this supplement provides a two-month supply for most cats. The free-form omega-3s are designed to support a normal inflammatory response, healthy skin and coat, and overall wellness. Formulated specifically for cats and small dogs, the dosing is appropriately scaled for feline needs.
What We Like
- Snip-tip capsules eliminate measuring and provide perfectly consistent daily doses
- Free-form EPA/DHA blend designed for optimal feline absorption
- 60-count package provides approximately two months of daily supplementation
What Could Be Better
- Higher per-serving cost than bulk liquid fish oil options
- Requires snipping each capsule, which adds a step compared to pump bottles
Bottom Line: Pet Protect’s snip-tip capsules are ideal for cat owners who want precise, pre-measured omega-3 dosing without the mess of liquid bottles.
4. Freshly Bailey Omega-3 Fish Oil for Cats – Best Potency
- Reduce Shedding + Improve Skin and Coat - Plano Paws Wild Caught Omega 3 for Cats is made with pure Anchovies, Herring, Mackerel, and Sardines from the clear ocean waters off the coast of Iceland.
- Low Odor, Safe + Effective - Our pet liquid fish oil is human grade and molecularly distilled to remove all harmful toxins and heavy metals to support joint health, skin, coat, heart, + immune system.
- For All Breeds and Ages - Our fish oil for cats liquid pump makes it easy to give your cat omega 3 oils they need to stay healthy and happy. Just squirt the fish oil onto your kitten or cats food.
- Sustainably Sourced - Our omega 3 fish oil cat supplement is loaded with healthy DHA and EPA omega 3 for cats. Cat fish oil supplements may provide allergy and itch relief for cats.
- Our Mission - Plano Paws makes cat treats, cat health supplies and cat supplements you can trust. Plano Paws lives by 3 core principles. 1. Safe Ingredients. 2. Outstanding Effectiveness. 3. Exceptional Service.
One of the most concentrated cat-specific fish oils available, delivering 330mg of omega-3 with EPA and DHA per milliliter.
Freshly Bailey leads the category in omega-3 concentration with 330mg per mL—among the highest potency levels available in a supplement formulated specifically for cats. The formula provides both EPA and DHA in meaningful amounts, targeting skin health, joint support, dandruff reduction, and coat shine. Designed exclusively for felines, the dosing and formulation account for cats’ unique nutritional needs.
The 4-ounce liquid bottle provides a solid supply for single-cat households and mixes easily into wet or dry food. The formula also supports brain health and immune function, making it a comprehensive daily supplement that goes well beyond cosmetic coat benefits.
What We Like
- 330mg omega-3 per mL is one of the highest potencies available for cats
- Cat-specific formulation with appropriate dosing for feline needs
- Addresses skin, coat, joint, brain, and immune health in one product
What Could Be Better
- Potent fish smell may be strong during daily dosing
- No pump or dropper included—requires careful pouring
Bottom Line: If your cat needs the highest concentration of omega-3s possible in a cat-specific formula, Freshly Bailey delivers maximum potency per serving.
5. Pet Supplements Omega-3 Softgels for Cats – Best Capsule Format
- IMPORTANCE OF OMEGA3 FOR CATS: Fats are the second most important part of your cats diet, next to protein. In the wild, nearly half the calories wild cats eat are from fat. But given the importance of fat in the diet, it’s surprising how so many of us make the same mistake. And this mistake can create dangerous inflammation for your lovely cat.
- OMEGA-3 SOFTGELS FOR CATS: This natural Omega-3 is made in a softgel form for your cat to take. For bigger cats they can take this within there food or if you have a smaller cat just puncture the softgel and apply oil directly to food. This supplement is the best and optimal for your cats health and wellness. Made from wild anchovy, mackerel and sardine. Also other ingredients include Crude fat, Omega-3 fatty acids, EPA and a lot more.
- CATS GOOD BUILDING BLOCKS: So getting proteins and fats right is critical to your cats health, they’re the building blocks for good nutrition. And getting the fats right means not just the amount of fat, but the balance. Also the Carbohydrates that Omega-3 provides your pet is pure energy and plays no other role. With this in mind you cat can feel and look a lot better if they are having health problems
- WHY CATS NEED FATS: Protein provides calories and also the building blocks for virtually every structure in your cat's body. They build muscles and soft tissue, skin, hair and nails, blood cells, neurotransmitters and the enzymes that control virtually every action in its body. This will help to insure that your cat is strong and healthy for unlimited play time.
- 100% SATISFACTION GUARANTEE, if you are not satisfied with the results we will refund your money even if you have finished the bottle. We are a loyal business with our own pets and know how important your pet’s health is to you. Make your RISK FREE purchase today with Pet Supplements!
Easy-to-use omega-3 softgels sourced from wild anchovy, mackerel, and sardine that can be given whole or punctured.
These softgels provide a convenient capsule option for omega-3 supplementation. Sourced from wild-caught anchovies, mackerel, and sardines, the oil provides omega-3 fatty acids along with EPA and other beneficial compounds. Larger cats can take the softgel whole mixed into food, while for smaller cats, you can simply puncture the softgel and squeeze the oil onto their meal.
With 180 softgels per bottle, this is one of the most generous supplies available. The multi-source fish oil blend provides a broader range of fatty acids compared to single-source oils, and the sealed softgel format keeps each dose fresh until it’s used—an advantage over liquid bottles that can oxidize over time.
What We Like
- 180-count bottle offers exceptional supply lasting several months
- Softgels keep each dose sealed and fresh until punctured
- Multi-source fish oil from anchovy, mackerel, and sardine for a broad fatty acid profile
What Could Be Better
- Softgels may be too large for some cats to swallow whole
- Puncturing capsules adds a manual step to each daily dose
Bottom Line: Pet Supplements’ softgels offer freshness-preserving convenience and a generous supply that makes them ideal for long-term omega-3 supplementation.
6. Iceland Pure Pet Salmon Oil – Best Single-Source Oil
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100% pure salmon oil with a near-scent-free profile and an aluminum-coated bottle that prevents plastic contamination.
Iceland Pure offers one of the simplest omega-3 formulas on the market—just pure farmed salmon oil with natural preservatives. This single-source approach means complete transparency in what you’re feeding your cat. The oil is rich in omega-3 fatty acids including EPA and DHA, providing comprehensive support for skin, coat, joint, and immune health.
The 8.75-ounce aluminum-coated bottle is a standout packaging choice that prevents the plastic contamination that can occur with standard plastic bottles. The included pump makes daily dosing easy, and the near-scent-free profile sets it apart from fishier-smelling alternatives—a bonus for owners who find fish oil odor unpleasant.
What We Like
- Pure, single-ingredient formula with complete transparency
- Aluminum-coated bottle protects against plastic contamination
- Reduced fish smell compared to most competing fish oil products
What Could Be Better
- Pump mechanism has received mixed reliability reports from some users
- Farmed salmon sourcing may concern environmentally conscious buyers
Bottom Line: Iceland Pure is the top choice for cat owners who want a pure, single-source salmon oil in premium, contamination-resistant packaging.
7. Deley Naturals Wild-Caught Fish Oil – Best Large Format
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A 16-ounce bottle of wild-caught fish oil from anchovies, sardines, herring, and mackerel—ideal for multi-cat or multi-pet households.
Deley Naturals offers one of the largest-format fish oils available, with a full 16 ounces of 100% wild-caught oil sourced from anchovies, sardines, herring, and mackerel. This multi-species blend provides a broad spectrum of omega-3 fatty acids, and the large bottle makes it an economical choice for households with multiple cats or a combination of cats and dogs.
The oil is free from artificial additives and preservatives, relying on natural tocopherols to maintain freshness. A pump dispenser is included for easy daily dosing. The four-fish blend typically provides higher total omega-3 levels than single-source oils, giving your cat maximum fatty acid diversity.
What We Like
- 16-ounce bottle provides outstanding value for multi-pet households
- Four-fish blend delivers the broadest omega-3 profile on this list
- 100% wild-caught with no artificial additives or preservatives
What Could Be Better
- Large bottle may lose freshness before being fully used in single-cat homes
- Must be refrigerated after opening to prevent oxidation
Bottom Line: Deley Naturals is the smart buy for multi-pet households that want a large, high-quality fish oil supply at the best possible per-ounce price.
8. Vetoquinol Triglyceride Omega-3 – Best Veterinary Grade
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A veterinary pharmaceutical company’s omega-3 supplement in highly bioavailable triglyceride form, formulated for cats and small dogs.
Vetoquinol is a global veterinary pharmaceutical company, and their Triglyceride Omega-3 supplement reflects that clinical heritage. The fish oil is delivered in triglyceride form—the most bioavailable molecular structure for omega-3 fatty acids—ensuring your cat gets maximum absorption from each dose. The formula provides EPA and DHA to support skin, coat, joint, and immune health.
Each bottle contains 60 capsules formulated for cats and dogs up to 30 pounds. The capsules can be given whole with food or punctured and squeezed onto meals. Vetoquinol’s veterinary background means this product is frequently recommended by veterinarians as a trusted omega-3 supplement.
What We Like
- Triglyceride form provides the highest bioavailability of any omega-3 molecular structure
- Backed by a global veterinary pharmaceutical company’s research and reputation
- Frequently recommended by veterinarians for feline omega-3 supplementation
What Could Be Better
- 60-count bottle at a premium price results in a higher per-dose cost
- Capsules may be too large for very small cats without puncturing
Bottom Line: Vetoquinol’s triglyceride omega-3 is the professional’s choice—if your vet recommends omega-3 supplementation, this is likely the product they’d suggest.
9. Liquid Health Pets Omega-3 for Cats – Best with DPA
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A unique triple-omega formula featuring EPA, DPA, and DHA from wild-caught fish oil, made in the USA.
Liquid Health Pets sets itself apart by including DPA (docosapentaenoic acid) alongside the standard EPA and DHA. DPA is a lesser-known omega-3 fatty acid that serves as a bridge between EPA and DHA in the body and has been shown to support cardiovascular health, reduce inflammation, and enhance the effectiveness of other omega-3s. This triple-omega approach provides more comprehensive fatty acid support than standard EPA/DHA-only formulas.
The 8-ounce liquid bottle is sourced from wild-caught fish and manufactured in the USA. The liquid format mixes easily into food, and the inclusion of DPA makes this one of the most advanced omega-3 formulas available for cats. It supports skin, coat, joint, brain, heart, and immune health.
What We Like
- Unique inclusion of DPA provides a more complete omega-3 fatty acid profile
- Wild-caught sourcing and USA manufacturing for quality assurance
- 8-ounce bottle offers a good balance of supply and freshness
What Could Be Better
- DPA benefits are less well-known and studied compared to EPA and DHA
- Higher price point than simpler EPA/DHA-only fish oils
Bottom Line: Liquid Health’s triple-omega formula is the most advanced option for cat owners who want EPA, DPA, and DHA working together for comprehensive omega-3 support.
How to Choose the Best Cat Omega-3 Supplement
The most important factor when choosing an omega-3 supplement for your cat is the EPA and DHA content per serving. These are the two omega-3 fatty acids with the most scientific evidence supporting their benefits for skin, coat, joint, and overall health. Look for products that clearly list the milligrams of EPA and DHA per dose, not just total omega-3 or total fish oil content, as these broader numbers can be misleading.
The molecular form of the omega-3 matters for absorption. Triglyceride-form fish oils are the most bioavailable, meaning your cat absorbs more of the active fatty acids from each dose. Ethyl ester forms, while still beneficial, are absorbed less efficiently. Premium products like Nordic Naturals and Vetoquinol specifically use triglyceride-form omega-3s for this reason.
Choose a format that fits your cat’s preferences and your daily routine. Liquid oils with pumps or droppers are the most economical and easy to mix into food, but they can be messy and require refrigeration after opening. Capsules and softgels keep each dose fresh and sealed, but may need to be punctured for smaller cats. Chew-style supplements are the easiest to administer but typically contain lower omega-3 concentrations.
Sourcing and testing should influence your decision, especially with fish-derived products. Wild-caught fish from cold, clean waters (Alaskan salmon, Nordic anchovies, sardines) tend to have better omega profiles and fewer contaminants than farmed alternatives. Third-party testing for purity, potency, heavy metals, and freshness is the strongest quality indicator. Look for supplements that can point to specific testing standards they meet or exceed.
Consider the shelf life and storage requirements of the product. Liquid fish oils oxidize once opened, so refrigeration is typically required and the bottle should be used within a few weeks to months. Capsules and softgels stay fresh longer since each dose is individually sealed. If you have a single cat, a smaller bottle of liquid oil or a capsule format may be more practical than a large bottle that could go rancid before you finish it.
Benefits of Omega-3 Supplements for Cats
Omega-3 fatty acids are powerful anti-inflammatory agents that benefit virtually every system in your cat’s body. EPA and DHA help regulate the inflammatory response, which can reduce symptoms of chronic conditions like allergies, arthritis, and inflammatory bowel disease. This anti-inflammatory effect is one of the primary reasons veterinarians recommend omega-3 supplementation for cats with a wide range of health concerns.
Skin and coat health is perhaps the most visible benefit of omega-3 supplementation. EPA and DHA support the skin’s lipid barrier, which retains moisture and keeps irritants out. Cats on omega-3 supplements typically develop softer, shinier coats with less dandruff and reduced shedding. For cats with allergic skin conditions, omega-3s can help reduce itching and irritation, improving comfort and reducing the need for scratching.
Joint health is another significant benefit, particularly for older or overweight cats. Omega-3 fatty acids help reduce joint inflammation, which can improve mobility and comfort in cats with arthritis or stiffness. Starting omega-3 supplementation earlier in life may help preserve joint health as your cat ages, potentially delaying the onset or reducing the severity of age-related joint issues.
Beyond these visible benefits, omega-3s support heart health by helping maintain normal heart rhythm and blood vessel function, brain health by supporting cognitive function (especially important in senior cats), and kidney health by reducing inflammation in the renal system. Given the broad range of benefits, omega-3 supplementation is one of the most universally recommended additions to a cat’s diet by veterinary nutritionists.
Frequently Asked Questions
How much omega-3 should I give my cat daily?
A general guideline is 30-50mg of combined EPA and DHA per pound of body weight daily, but dosing varies by product and your cat’s health needs. Always follow the specific dosing instructions on your chosen supplement and consult your veterinarian for personalized recommendations, especially if your cat has health conditions.
Can cats get enough omega-3 from their regular food?
While some premium cat foods contain added omega-3s, most don’t provide optimal therapeutic levels. The processing and cooking of kibble and canned food can also degrade omega-3 content. Supplementation ensures your cat receives consistent, meaningful amounts of EPA and DHA beyond what their regular diet provides.
How long before I see results from omega-3 supplementation?
Coat and skin improvements typically become noticeable within two to four weeks of consistent daily supplementation. More systemic benefits like joint comfort and reduced inflammation may take four to eight weeks to become apparent. Continued daily use is necessary to maintain the benefits.
Is salmon oil or fish oil better for cats?
Both are effective. Salmon oil is a popular single-source option rich in omega-3s, while multi-fish blends (anchovy, sardine, mackerel) often provide higher total omega-3 levels and lower contaminant risk due to the smaller fish species used. Either is a good choice—the key is consistent EPA and DHA content per serving.
Should I refrigerate my cat’s fish oil supplement?
Liquid fish oil should be refrigerated after opening to prevent oxidation, which causes the oil to become rancid and lose potency. Capsules and softgels don’t require refrigeration but should be stored in a cool, dry place. Always check the product label for specific storage instructions.
Can omega-3 supplements cause diarrhea in cats?
Starting with too high a dose can cause loose stools or diarrhea in some cats. To minimize this, begin with half the recommended dose and gradually increase over one to two weeks. If digestive issues persist at the full dose, reduce the amount and consult your veterinarian.
Are plant-based omega-3s effective for cats?
Cats cannot efficiently convert the ALA (alpha-linolenic acid) found in plant sources like flax and chia into the EPA and DHA their bodies need. Marine-sourced omega-3s (fish oil, krill oil) provide pre-formed EPA and DHA, making them far more bioavailable and effective for cats. Plant-based omegas are a distant second choice and should only be used if marine sources aren’t an option.
Can I give my cat krill oil instead of fish oil?
Krill oil is a valid alternative to fish oil for cats. It provides EPA and DHA in phospholipid form, which some research suggests may enhance absorption. Krill oil also contains astaxanthin, a powerful antioxidant. However, krill oil supplements typically come in smaller doses and higher price points than fish oil, so the per-dose cost is generally higher.
