Vitamins & Supplements

The Best Dog Fish Oil Supplements

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Our picks are based on Amazon bestseller rankings, verified customer ratings, and product availability. We update our recommendations regularly to ensure accuracy.

Fish oil supplements can significantly benefit your dog's health, supporting everything from skin and coat condition to joint mobility and cardiovascular function. However, the market is flooded with options, making it crucial to select a high-quality product. Choosing the right fish oil ensures your canine companion receives the purest, most effective omega-3 fatty acids for optimal well-being.

No. 1
Zesty Paws Wild Alaskan Omega-3 Blend Pollock + Salmon Oil for Dogs and Cats- Skin and Coat Support, Omega...
  • SKIN & COAT NOURISHMENT: Fish oil for dogs and cat like Wild Alaskan Salmon Oil provides omega-3 fatty acids, helping maintain a shiny coat and nourished skin
  • OMEGA 3 HEALTH SUPPORT: Our omega 3 fish oil for dogs and cats is packed with EPA and DHA, supporting overall pet health, supporting the immune system, joints, and heart function
  • EASY-TO-MIX FORMULA: Avoid capsules with this easy salmon oil for cats and dogs; simply add a few pumps to food for a nutritious boost
  • NOURISHES SKIN: This cat and dog oil for skin and coat is gentle, making it a key part of cat and dog health supplies
  • BOOST IMMUNE SYSTEM: Rich in omega 3, this cat and dog salmon oil not only supports skin and coat health but also strengthens immune function and overall well-being, fitting dog health needs
No. 2
Omega 3 for Dogs - 250 Fish Oil Chews for Dog Shedding, Allergy & Itch Relief, Hot Spot Treatment - Advanced...
  • Promotes Healthy Skin & Coat: Our dog fish oil supplements deeply nourish dry, flaky skin while reducing excessive shedding, helping your dog maintain a soft, glossy coat and overall skin health.
  • Itch & Allergy Relief with Omega 3 for Dogs: Made with pure fish oil for dogs skin and coat, these chews help ease itching, redness, and seasonal allergies for healthier skin and comfort.
  • Supports Hip, Joint & Heart Health: Rich in dog omega 3 fish oil, our supplement helps improve mobility, supports heart function, and enhances overall well-being for puppies, adult and senior dogs.
  • Made in the USA in an FDA-Registered Facility: Our dog omega 3 supplement is carefully crafted with premium ingredients under strict safety, purity, and potency standards for the best results.
  • Premium & Natural Ingredients Formulated by Veterinarians: This advanced EPA & DHA blend ensures superior absorption, supporting skin, coat, joint, and immune health for all dog breeds.
No. 3
Nordic Naturals Omega-3 Pet, Unflavored - 180 Soft Gels - 320 mg Omega-3 Per Soft Gel - Fish Oil for Dogs with...
  • WHY OMEGA-3 PET - This Nordic Naturals pet product is made with the same exceptional quality oil as our human products, but has been specially formulated for your dog. Omega-3 Pet features omega-3 fish oil in soft gels.
  • PROACTIVE PROTECTION FOR YOUR PUP - Research shows that the essential fatty acids EPA & DHA in fish oil help support your pet’s heart, skin & coat, immune health.
  • YOUR PETS DESERVE 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 dog or 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...
No. 4
Fish Oil for Dogs, Salmon Pollock Liquid Omega 3, 64 oz
  • HEALTHY SKIN AND COAT — The essential omega-3 fatty acids in our fish oil support healthy skin and a soft, shiny, glossy coat for your dog, cat, ferret, horse, or energetic ball of fur. You'll want to hug them even more!
  • SHEDDING — Our fish oil helps maintain normal shedding — the same essential omega-3 fatty acids that nourish skin and coat help keep your pet's shedding at its normal, healthy rhythm.
  • IMMUNE SYSTEM — Rich in omega-3 EPA and DHA, our pollock and salmon oil provides essential fatty acids that support a healthy immune system.
  • HEART FUNCTION — Helps support heart function. The omega-3 fatty acids in fish oil are vital to everyday health, including the heart and cardiovascular system.
  • PHYSICAL AND MENTAL WELL-BEING — The omega-3 fatty acids in salmon and pollock oil help support physical and mental well-being to keep your pet active and engaged.
  • SUSTAINABLY SOURCED — Our fish oil has been sustainably sourced, ensuring healthy oceans and safeguarding seafood supplies for the future.
  • PROUDLY WOMEN-OWNED, FAMILY-OWNED, and US-OWNED — We are proud to be Family-owned, Woman-owned, and US-owned. Our products and ingredients are sourced globally so we can give our fur babies the best.
SaleNo. 5
Natural Dog Company Wild Alaskan Salmon Oil for Dogs - Omega 3 Fish Oil Supplement with EPA & DHA for Skin...
  • Salmon Oil for Dogs Skin & Coat Support: This wild Alaskan fish oil for dogs delivers EPA and DHA omega-3 fatty acids to help maintain healthy skin moisture, support normal shedding, and promote a soft, shiny coat with consistent daily use.
  • Daily Dog Supplement for Wellness: Add simple omega 3 for dogs to your pup’s daily routine with a liquid dog supplement that supports skin, coat, joint, heart, immune, and whole-body wellness across breeds and life stages.
  • Salmon Oil Dog Food Topper: This salmon and pollock oil food topper pumps directly onto meals to add omega 3 fish oil nutrition and natural flavor. A simple choice for picky eaters, kibble routines, and daily mealtime support.
  • Wild Alaskan Salmon & Pollock Oil: Made with a balanced blend of wild-caught Alaskan salmon and pollock oil for dogs, this omega fish oil for dogs provides naturally occurring EPA and DHA without fillers or artificial additives.
  • Seasonal Skin & Coat Comfort: Formulated to help maintain the skin’s natural barrier during seasonal changes, this skin and coat supplement for dogs supports everyday comfort, coat softness, and healthy-looking skin.
  • Joint, Heart & Immune Support: Essential fatty acids help support joint mobility, cardiovascular function, immune health, and active daily living. Great for adult dogs, senior dogs, and pups who need foundational omega nutrition.
  • Verified Quality & Sourcing: Responsibly sourced from wild Alaskan fish and verified by Orivo for species and origin. Carefully processed to help preserve omega-3 nutrient integrity and provide consistent quality in every bottle.
  • Simple Pump Dosing Routine: Use 1 pump for dogs up to 25 lbs, 2 pumps for 26–75 lbs, and 3 pumps for dogs over 75 lbs. Introduce gradually and use consistently as part of your dog’s daily nutrition routine.
No. 6
Zesty Paws Wild Alaskan Omega-3 Blend Pollock + Salmon Oil for Dogs and Cats- Skin and Coat Support, Omega...
  • SKIN & COAT NOURISHMENT: Fish oil for dogs and cat like Wild Alaskan Salmon Oil provides omega-3 fatty acids, helping maintain a shiny coat and nourished skin
  • OMEGA 3 HEALTH SUPPORT: Our omega 3 fish oil for dogs and cats is packed with EPA and DHA, supporting overall pet health, supporting the immune system, joints, and heart function
  • EASY-TO-MIX FORMULA: Avoid capsules with this easy salmon oil for cats and dogs; simply add a few pumps to food for a nutritious boost
  • NOURISHES SKIN: This cat and dog oil for skin and coat is gentle, making it a key part of cat and dog health supplies
  • BOOST IMMUNE SYSTEM: Rich in omega 3, this cat and dog salmon oil not only supports skin and coat health but also strengthens immune function and overall well-being, fitting dog health needs
SaleNo. 7
Salmon Oil for Dogs - Premium Fish Oil for Skin and Coat Health - Omega 3 Supplement - Supports Itchy Skin...
  • Chew + Heal's Norwegian salmon oil for dog food is packed with omega-3 fatty acids to promote healthy and happy fur for your dog.
  • Salmon oil is good for dogs with itchy skin as well as dry skin and coat. The omega-3 fatty acids help to aid overall skin and coat health for soft and luscious locks.
  • Vitamin E has a host of benefits such as heart, immune, cell, skin and coat health, and more. It is also an antioxidant making it a vital component to dog health.
  • This Heal's 8 oz. omega 3 Fish Oil for dogs comes in liquid form, making it easy to add to your dog's meals, enhancing it not only with a great taste but giving it a nutritional boost as well!
  • Our liquid fish oil for dogs is made in the USA and is good for breeds of all sizes.
No. 8
BARK&SPARK Omega 3 for Dogs - 180 Fish Oil Treats for Dog Shedding, Skin Allergy Chews, Itch Relief, Hot Spots...
  • Itch & Allergy Relief with Omega-3 for Dogs - with 500mg of Omega (EPA+DHA) per serving, our chewable supplement helps with hot spots, dry itchy skin, ease itching, irritated skin, stops shedding.
  • Skin & Coat + Hip & Joint Supplement Combined - Omega 3 is a vital element to keep your pet active, support healthy hip and joints, brain, heart, immune health. Can be served with regular pet food.
  • Bark&Spark Commitment - we are keen to give best to our furry customers and we take NO compromise when it comes to product quality. Our omega 3 bites are made in the USA, with human grade ingredients.
  • Up to 3 Month Supply - with 180 salmon oil treats per jar you keep your pet healthy while not spending a fortune on overpriced supplements. Best value.
  • Is Your Dog a Picky Eater? We stick to simple formulas rich in natural flavors, that could tempt a fussy eater. No hassle with pills, powder, tablets or capsules.
No. 9
Nutramax Welactin Omega 3 Fish Oil for Dogs, Skin and Coat Health Supplement, Plus Immune and Overall Health...
  • Premium Omega 3 for Dogs - Welactin is the #1 vet recommended omega 3 supplement brand and is a rich source of omega 3 fatty acids, EPA (eicosapentaenoic acid) and DHA (docosahexaenoic acid).
  • With Beta-Glucan, Vitamins, and Minerals - Each soft chew also contains beta-glucan and a vitamin/mineral mix to help support the immune system and overall health.
  • Soft Chews for Daily Use - Welactin comes in an easy-to-administer soft chew, providing a convenient way to support your dog’s skin and coat health.
  • Exceptional Quality - Welactin is backed by science and undergoes thorough quality inspections to ensure your dog receives a safe, high-quality product.
  • From the #1 Veterinarian Recommended Supplement Company* - Nutramax has been a leader in pet health for over 25 years, and provides supplements to support joint health, digestive health, skin and coat health, calming, and more.
No. 10
Nordic Naturals Omega-3 Pet, Unflavored - 120 Soft Gels - 320 mg Omega-3 Per Soft Gel - Fish Oil for Dogs with...
  • WHY OMEGA-3 PET - This Nordic Naturals pet product is made with the same exceptional quality oil as our human products, but has been specially formulated for your dog. Omega-3 Pet features omega-3 fish oil in soft gels.
  • PROACTIVE PROTECTION FOR YOUR PUP - Research shows that the essential fatty acids EPA & DHA in fish oil help support your pet’s heart, skin & coat, immune health.*
  • YOUR PETS DESERVE 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 dog or 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...

Last update on 2026-07-17 / Affiliate links / Images from Amazon Product Advertising API

How to Choose the Best Dog Fish Oil Supplements

Choose the Right Type of Fish Oil

When selecting a fish oil supplement for your dog, consider the source of the omega-3 fatty acids. Common sources include salmon, sardines, anchovies, and krill. Look for products that clearly state the type of fish used and prioritize those from smaller, shorter-lived fish, as they tend to accumulate fewer toxins. Ensure the supplement provides a good balance of EPA (eicosapentaenoic acid) and DHA (docosahexaenoic acid), the two primary beneficial omega-3s for dogs.

Check for Purity and Potency

Purity is paramount to ensure your dog isn't ingesting harmful contaminants like heavy metals, PCBs, or dioxins. Reputable brands will often have their products third-party tested for purity and potency, and may display certifications from organizations like IFOS (International Fish Oil Standards). Potency refers to the concentration of EPA and DHA per serving. Higher concentrations mean your dog gets more beneficial fatty acids with each dose, potentially requiring fewer servings.

Frequently Asked Questions

What are the main benefits of fish oil for dogs?
Fish oil is rich in omega-3 fatty acids, primarily EPA and DHA, which can improve skin and coat health, reduce inflammation associated with arthritis, support cognitive function, and promote cardiovascular health. These fatty acids play a vital role in overall canine wellness.
How much fish oil should I give my dog?
Dosage recommendations vary based on your dog's weight, the concentration of EPA and DHA in the supplement, and their specific health needs. Always consult your veterinarian for personalized dosage instructions to ensure safety and efficacy.
Can fish oil cause any side effects in dogs?
While generally safe, some dogs may experience mild gastrointestinal upset, such as diarrhea or vomiting, when first starting fish oil. It's advisable to start with a lower dose and gradually increase it to minimize potential side effects. If symptoms persist, discontinue use and consult your vet.
How should fish oil supplements be stored?
Most fish oil supplements should be stored in a cool, dark place, away from direct sunlight and heat, to prevent oxidation and maintain freshness. Refrigeration is often recommended after opening, especially for liquid forms, to preserve potency.