9 Best Fatty Acid Supplements for Cats 2026

Indulgent, lickable luxury meets targeted nutrition in the Zesty Paws Omega Cat Mousse—a game-changer for picky eaters and finicky felines alike. Unlike dry supplements that get ignored, this tuna-flavored mousse delivers omega-3 and omega-6 fatty acids in a silky, seaweed-enriched puree that cats actively crave. With each squeeze, you’re feeding more than just a treat—you’re boosting cellular function, supporting radiant coat health, and addressing dry, flaky skin at the source, all without forcing pills or mixing oils. For pet parents tired of wasted supplements, this is the flavor-first solution that actually gets consumed.

In real-world use, the mousse doubles as both a high-value reward and a seamless food topper, effortlessly blending into kibble or served solo during training or bonding moments. The 18-count pack offers portion-controlled servings, making it ideal for daily skin and coat maintenance without overfeeding. While it doesn’t match the sheer omega density of liquid oils, its antioxidant-rich formula—featuring flaxseed oil, chicken, and essential vitamins—delivers broad-spectrum support in a palatable, low-mess format. However, it’s not ideal for cats needing high-dose therapeutic omega levels, as the concentration is more maintenance-focused than clinical.

Compared to capsule-based supplements like VetriScience, this mousse wins on palatability and ease of use, especially for cats resistant to pills or mixed oils. It’s also more targeted than multi-vitamin chews, focusing squarely on skin, coat, and cellular health without overloading with less relevant nutrients. Best for owners seeking a treat-integrated wellness boost, it bridges the gap between enjoyment and nutrition—though for systemic joint or immune support, a higher-potency oil may still be needed. Still, for getting omegas into even the most stubborn eaters, no other format is as consistently effective.

When it comes to high-volume omega delivery, LEGITPET’s 32 oz Wild Alaskan Salmon Oil stands tall as the ultimate choice for multi-pet households or long-term supplementation. Packed with EPA and DHA-rich omega-3s, this pure liquid extract supports not just skin and coat health but also joint mobility, heart function, and immune resilience—making it a holistic powerhouse. Sourced from wild-caught salmon, it avoids fillers and artificial additives, delivering a clean, naturally nutritious boost that mixes seamlessly into any diet, from kibble to raw B.A.R.F. For pet owners seeking maximum value and minimal waste, this large-format oil is a no-brainer.

In practice, the pump dispenser ensures mess-free dosing, and most cats accept it readily when drizzled over meals—thanks to its mild, non-fishy aftertaste. The 32 oz size translates to months of consistent use, ideal for pets requiring daily omega support for chronic skin issues or aging joints. It performs exceptionally well on dry, flaky coats, visibly improving softness and shine within weeks. That said, the larger bottle may be overkill for single-cat homes or those testing tolerance, and the plastic container isn’t as premium as glass alternatives. Still, its broad-spectrum benefits and USA-made, GMP-certified quality make it a trustworthy long-term staple.

Against smaller oils like Grizzly’s 4 oz version, this LEGITPET option offers better cost-per-ounce efficiency and longer shelf life, though it lacks third-party batch testing transparency. Compared to capsule forms, it’s far easier to administer and allows precise weight-based dosing. It’s best suited for families with multiple pets or cats needing sustained, high-level omega intake. While not the most concentrated formula, its balance of purity, potency, and practicality outshines most competitors—especially when value and volume are priorities.

Zesty Paws strikes an ideal balance of potency, sourcing, and usability with their Wild Alaskan Omega-3 Blend, making it the best overall choice for cat owners who want premium support without compromise. By combining Pollock and Salmon oil, this formula delivers a broader spectrum of omega-3s than salmon-only oils, enhancing EPA and DHA levels critical for immune function, joint comfort, and skin nourishment. The 32 oz size offers extended use, while the easy-pump design ensures no-spill dosing—perfect for busy pet parents who value convenience as much as quality.

Real-world testing shows rapid improvements in coat luster and skin hydration, even in cats with mild seasonal dryness. The oil mixes effortlessly into wet or dry food, leaving no greasy film or strong odor—common complaints with lower-grade fish oils. It’s particularly effective for indoor cats with sedentary lifestyles, helping maintain healthy inflammation levels and cognitive sharpness. While slightly pricier than budget options, its consistent purity and blend diversity justify the investment. One minor drawback: the pump can occasionally clog with temperature shifts, requiring gentle warming to restore flow.

Compared to Vetoquinol’s vet-grade option, this Zesty Paws blend offers similar EPA/DHA benefits but at a more accessible price point and with a more palatable taste profile. It outperforms capsule forms like VetriScience in absorption speed and dosing flexibility, while avoiding the hassle of swallowing pills. Ideal for owners seeking a daily wellness foundation, it covers all bases—skin, coat, heart, joints, and immunity—without overcomplicating the regimen. When performance, purity, and practicality converge, this oil sets the gold standard.

For veterinarians and discerning pet owners, Vetoquinol’s Triglyceride Liquid Omega stands as the gold standard in clinical-grade supplementation—formulated with the precision and purity expected in vet clinics. Sourced from wild-caught sardines, mackerel, and anchovies, this concentrated oil delivers EPA and DHA in triglyceride form, which research shows is more readily absorbed than ethyl ester forms found in cheaper oils. It’s specifically designed to combat skin irritants, dryness, and inflammation, making it ideal for cats with allergies or environmental sensitivities.

In use, the no-mess pump allows for accurate, weight-based dosing, and the oil integrates smoothly into meals with minimal odor. Its potency shines in cats with chronic dermatitis or shedding issues, where consistent use leads to measurable improvements in skin resilience and coat density. The added vitamins A, D3, and E further support metabolic and immune health, creating a well-rounded profile. However, the 8 oz size means more frequent repurchasing, and the medical-grade focus may be overkill for healthy cats needing only maintenance-level support.

Compared to over-the-counter oils like HEAPETS, Vetoquinol offers superior bioavailability and traceability, with sourcing and manufacturing protocols that meet veterinary standards. While it lacks the flavor appeal of treat-based options, it outperforms them in therapeutic impact. It’s best for cats under veterinary care or those with diagnosed deficiencies—where proven efficacy trumps convenience. When health is the sole priority, this supplement delivers pharmaceutical-level confidence in every drop.

For cat owners who want total-body nutrition in one bite, these 15-in-1 multivitamin chews deliver unmatched breadth of support—combining omega-3s, taurine, prebiotics, glucosamine, and six probiotics into a single, easy-to-give treat. This isn’t just a fatty acid supplement; it’s a comprehensive wellness system targeting heart, vision, joints, digestion, immunity, and skin health. The inclusion of green-lipped mussel extract adds natural joint support, while taurine ensures cardiac and ocular protection—critical for indoor and senior cats.

In real-world use, the chews are easily broken for small cats and mix well with food, though some picky eaters may sniff them out. They’re particularly effective for cats with digestive sensitivities, thanks to yeast-derived β-glucan and prebiotics that promote healthy gut flora. While the omega content is moderate compared to pure oils, it’s sufficient for maintenance when paired with a balanced diet. The 30-day supply is affordable, but cats with severe skin or coat issues may need additional targeted omega support for optimal results.

Against standalone fish oils, this product trades potency for convenience and scope—ideal for owners who prefer one supplement over multiple bottles. Compared to Zesty Paws mousse, it offers more systemic benefits but less immediate skin and coat impact. Best for indoor, senior, or multi-issue cats, it simplifies supplementation without sacrificing key nutrients. When holistic, all-in-one care is the goal, this chew outshines single-focus formulas.

VetriScience’s gel capsules offer a clean, high-potency solution for cats needing concentrated omega support without liquid mess. Each capsule packs over 750 mg of omega fatty acids, including a balanced blend of 3, 6, and 9 from fish, borage, and flaxseed oils—making it one of the most comprehensive capsule options available. Designed for cats with sensitive, itchy skin, it effectively reduces shedding and strengthens the skin barrier, thanks to added vitamin E for antioxidant protection.

In practice, the capsules can be punctured and squeezed over food, eliminating the need to swallow whole—ideal for cats resistant to pill-taking. The formula is free from fillers and additives, appealing to owners prioritizing ingredient transparency. It performs exceptionally well in multi-cat homes where consistent dosing and shelf stability matter. However, the gelatin shell may concern some pet parents, and the oil can oxidize faster once opened, requiring careful storage.

Compared to liquid oils like Grizzly or Pawstruck, this capsule form offers greater portability and less odor, but slower absorption and less precise dosing. Against Zesty Paws mousse, it delivers stronger therapeutic impact but lacks palatability. Best for owners who want a no-fuss, travel-ready omega boost with clinical-grade ingredients, it’s a solid middle ground between convenience and potency. When clean labels and skin-focused results are key, these capsules deliver.

For budget-conscious owners who still demand premium quality, Grizzly’s 4 oz Salmon Oil is the best value small size—delivering wild-caught Alaskan salmon oil in a compact, pump-equipped bottle. Despite its modest volume, it’s rich in natural omega-3s, supporting skin hydration, coat shine, and overall vitality with every serving. The medical-grade pump ensures precise, air-tight dispensing, reducing oxidation and waste—critical for maintaining oil freshness in smaller batches.

In use, it mixes cleanly into food with minimal fishy smell, and most cats accept it readily. It’s perfect for single-cat households or trial periods, allowing owners to test omega benefits without committing to large bottles. While not the most concentrated formula, its consistent potency and third-party testing ensure reliability. The main limitation? The 4 oz size means frequent repurchasing for larger or multi-cat homes, making it less cost-effective long-term.

Against Pawstruck’s extra-strength version, Grizzly offers similar wild Alaskan sourcing but at a lower concentration and price. Compared to capsule forms, it provides faster absorption and better dosing control. Ideal for owners seeking a trusted entry-level oil with no frills, it proves that high quality doesn’t require high volume. When affordability and purity align, Grizzly stands strong.

HEAPETS’ Wild Alaskan Salmon Oil earns its title as the best budget-friendly option without sacrificing core quality—offering a clean, no-filler formula rich in EPA and DHA for skin, coat, joint, and immune support. Made in GMP-certified, FDA-registered facilities and third-party tested, it ensures safety and potency at a price that won’t break the bank. The 8 oz bottle comes with a choice of cap or pump, adding flexibility for different feeding styles.

In real-world use, it mixes smoothly into food with minimal odor, and most cats show improved coat texture within weeks. It’s particularly effective for reducing itching and shedding, thanks to its natural omega-3 concentration. While not as potent as extra-strength formulas like Pawstruck, it delivers solid maintenance-level support for healthy cats. The lack of human-grade labeling or sustainable sourcing details keeps it from premium status, but for everyday use, it’s a reliable performer.

Compared to Vetoquinol, it lacks clinical-grade positioning, but matches well against other mid-tier oils in purity and performance. Against Zesty Paws’ mousse, it offers better value per omega dose. Best for owners seeking a no-nonsense, affordable oil that still meets safety standards, it proves budget doesn’t mean low quality. When cost efficiency and basic efficacy are priorities, HEAPETS delivers.

Pawstruck’s extra-strength formula sets a new bar for potency and purity, delivering 4,600 mg of omega oil per serving—ideal for cats with severe skin allergies, chronic dryness, or high therapeutic needs. Made from 100% human-grade, wild-caught Alaskan salmon, it’s sustainably sourced and lab-tested in a GMP-certified facility, ensuring the highest safety and freshness standards. This isn’t just a supplement—it’s a targeted intervention for cats struggling with dandruff, itching, or poor coat condition.

In practice, the easy-pump design makes dosing simple, and the oil integrates cleanly into meals with a mild, appealing aroma. Cats with allergy-related skin issues show marked improvement within weeks, thanks to the high EPA and DHA load that combats inflammation at the cellular level. While priced higher, its concentrated impact means smaller doses go further, enhancing long-term value. The only downside? The 8 oz size may run out quickly for large or multi-cat homes.

Compared to Grizzly, it offers significantly higher potency and human-grade labeling, though at a steeper cost. Against VetriScience capsules, it provides faster absorption and broader systemic support. Best for cats needing maximum omega firepower, it’s the go-to for owners who refuse to compromise on quality or strength. When therapeutic results are non-negotiable, Pawstruck rises to the challenge.