Icelandic Herring & Salmon Oil Supplement for Cats
Verified Aug 23, 2026
This is a concentrated fish oil supplement for cats made from herring and salmon oils, providing very high levels of omega-3 fats, including EPA and DHA. It’s designed to be used as a daily topper to support general skin, coat, joint, and brain health alongside a complete diet.
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Top Pick
Nutritionally, this is a high-quality omega-3 supplement with very concentrated EPA and DHA from marine sources, which cats can use effectively. It’s a nice option for cats who could benefit from extra omega-3s for skin, coat, or joint support, as long as you account for the added calories and fat. As with any supplement, it should be used in addition to, not instead of, a complete and balanced cat food.
Computed from 3 of 3 applicable checks. Missing data is skipped, never counted against a food.
The KibbleLab Score (1–10) is assessed from publicly available product data. Our evaluation is science-based, not marketing-based.
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At a Glance
Where these benefits come from
Benefits the manufacturer highlights in its own product marketing. KibbleLab lists them for reference and does not verify these claims.KibbleLab Review
Strengths
- Provides very high levels of omega-3s, including at least 6% EPA and 5.5% DHA, which are the most useful forms for cats.
- Uses named marine sources, herring oil and salmon oil, which are generally well-accepted and highly digestible fats for most cats.
- Simple ingredient list with only fish oils and mixed tocopherols as a preservative, which limits unnecessary additives.
- Liquid format and teaspoon-based dosing make it easy to adjust the amount for different cat sizes.
Considerations
- Fish oil adds significant fat and calories, so portions of the main diet may need small adjustments in overweight or low-activity cats.
- Cats with fish allergies or sensitivities should avoid this supplement, as it contains herring and salmon oils.
- Too much fish oil can cause loose stools or gastrointestinal upset in some cats, especially if introduced too quickly.
- This is a supplement, not a complete diet, so it must be fed alongside a balanced cat food to meet all nutrient needs.
Full Ingredient List
Ingredients and analysis reflect manufacturer data at the time of our last update and can change without notice. Always check the actual product packaging before feeding.
Ingredient filtering helps identify compatible options but is not a substitute for a veterinary elimination diet.
Top 5 Ingredients Explained
01
Herring Oil
Herring oil is a fish-derived oil used in dog and cat diets as a concentrated source of long-chain omega‑3 fatty acids (EPA and DHA), which support healthy skin and coat, help modulate inflammation, and can benefit joint and cardiovascular health. It is calorically dense and can cause fishy odor or gastrointestinal upset in some pets, so quality, freshness, and dosing matter—products should be properly processed to limit oxidation and contamination and a veterinarian should be consulted for pets with bleeding disorders, pancreatitis, or when combining with certain medications.
02
Salmon Oil
Salmon oil is used in pet foods as a concentrated source of fat and long‑chain omega‑3 fatty acids (EPA and DHA) to support skin and coat condition, reduce inflammation, and aid joint, cardiac and cognitive health in both dogs and cats (cats particularly benefit from preformed DHA). Because it is calorie‑dense and prone to oxidation, choose stabilized, quality‑tested salmon oil from reputable sources to avoid rancidity and contaminants, and consult your veterinarian for appropriate dosing or if your pet has a fish allergy.
03
Mixed Tocopherol
Mixed tocopherols are a blend of natural vitamin E compounds (alpha, beta, gamma and delta tocopherols) used in pet foods primarily as a natural antioxidant and preservative to protect fats and fat‑soluble nutrients and extend shelf life. They also supply dietary vitamin E—an essential antioxidant for immune function, skin and coat health and cellular integrity in dogs and cats—and are generally safe at typical use levels, though they are not a substitute for a complete vitamin formulation and may be less effective in animals with fat‑absorption disorders.
Nutritional Breakdown
How to read As Fed versus Dry Matter
As fed shows the numbers straight off the label, water included. Dry matter removes the water so you can compare a wet food and a dry food fairly.What is calorie density
How many calories the food packs per unit. Denser foods mean smaller portions for the same calories.Not sure how much of this to feed?
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Product Details & Brand
Product Specs
Brand
Premium "ethically sourced, transparently made" dog and cat food brand offering kibble, freeze-dried raw, gently cooked fresh meals, wet stews, treats and supplements. Differentiators are ingredient-level traceability (trace every lot to source), Certified Humane meat and Ocean Wise/Seafood Watch seafood. Sold in neighborhood pet stores across the US and Canada and DTC online.
Manufacturer
Owns no plants; partners with specialized facilities in the US, Canada and Iceland holding GFSI-recognized food safety certifications, audited by Open Farm's team plus independent auditors including Certified Humane. Formulation is led by an in-house team including board-certified veterinary nutritionist Dr. Moran Tal-Gavriel, with third-party test-and-hold lab verification before release.
PSC is a nonprofit that Accredits pet companies on their environmental and social impact, through third-party verification. Open Farm Inc. is a PSC Accredited business. View profile
Manufacturing details are compiled from public sources and not independently verified; they may not reflect contract manufacturing or co-packing.
Recall History
No recall is listed for Open Farm Icelandic Herring & Salmon Oil Supplement for Cats.
Source: FDA animal food recall listings back to January 2019 · Checked daily, last on Aug 31, 2026
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Frequently Asked Questions
Has Open Farm ever been recalled?
We have no recalls on record for Open Farm. We track the FDA's animal food recall listings back to January 2019 and publish every pet food recall automatically. A filing that isn't pet food may not appear here.
How does KibbleLab rate foods?
Our scores are based on ingredient composition, nutritional profile, AAFCO compliance, and health considerations. We don't penalize by-products, grains, or synthetic preservatives. Brands cannot pay for higher scores.
Is KibbleLab a substitute for veterinary advice?
No. KibbleLab provides data-driven food analysis, not medical advice. Always consult your veterinarian before making dietary changes, especially for pets with health conditions.
KibbleLab provides informational content only. This is not veterinary advice. Always consult a qualified veterinarian before changing your pet's diet.
KibbleLab may earn affiliate commissions through product links. No one can pay for a higher score, or to change what we recommend for your pet.
Product data sourced from manufacturer websites, AAFCO statements, and FDA recall listings. Last verified dates reflect our most recent data check. We track the FDA's animal food recall listings back to January 2019 and publish every pet food recall automatically. A filing that isn't pet food may not appear here.
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