Best fish oil for dogs
For most dogs, Deley Naturals Fish Oil: 2 pumps (1 teaspoon) a day gives a 50 lb dog 1,370 mg of EPA + DHA for $0.24 a day, and the bottle lasts 192 days. For a dog that won't eat oil, Pet Health Solutions Omega-Caps HP Fish Oil costs $0.14 a day. For the NASC seal, Wonder Paws Omega Max 3x Fish Oil gives 1,656 mg for $0.39 a day.
Best for most dogs
Deley Naturals Fish Oil (Icelandic wild-caught, 32 oz)
2 pumps (1 teaspoon) a day1,370 mg EPA + DHA$0.24 a day at the label doselasts 192 days1
Best softgel
Pet Health Solutions Omega-Caps HP Fish Oil
½ softgel a day445 mg EPA + DHA$0.14 a day at the label doselasts 500 daysNASC seal2
Best with the NASC seal
Wonder Paws Omega Max 3x Fish Oil (Alaskan salmon, cod liver, pollock, krill)
2 pumps (2 teaspoons) a day1,656 mg EPA + DHA$0.39 a day at the label doselasts 96 daysNASC seal3
We pick by cost a day for a 50 lb dog at the label dose. Prices on Amazon, October 28, 2026.4
Pump oil or softgel?
At the label dose for a 50 lb dog
Across 6 pump oils and 6 softgels. Oil is cheaper per mg and needs fewer servings; softgels avoid oily food.
What the picks cost by dog weight
Each pick at its own label dose: how much to give, the EPA + DHA it gives (as a share of the arthritis-trial amount for that weight), and the cost a day. For any other weight, or the cost to reach the full amount, use the fish oil calculator.
| Dog's weight | Deley Naturals Fish Oil | Pet Health Solutions Omega-Caps HP Fish Oil | Wonder Paws Omega Max 3x Fish Oil |
|---|---|---|---|
| 25 lb (target 780 mg) | 1 pump (½ teaspoon) · 685 mg (88%) · $0.12 a day | ½ softgel · 445 mg (57%) · $0.14 a day | 1 pump (1 teaspoon) · 828 mg (106%) · $0.19 a day |
| 50 lb (target 1,560 mg) | 2 pumps (1 teaspoon) · 1,370 mg (88%) · $0.24 a day | ½ softgel · 445 mg (28%) · $0.14 a day | 2 pumps (2 teaspoons) · 1,656 mg (106%) · $0.39 a day |
| 75 lb (target 2,350 mg) | 3 pumps (1½ teaspoons) · 2,055 mg (88%) · $0.36 a day | 1 softgel · 890 mg (38%) · $0.28 a day | 3 pumps (3 teaspoons) · 2,484 mg (106%) · $0.58 a day |
| 100 lb (target 3,130 mg) | 4 pumps (2 teaspoons) · 2,740 mg (88%) · $0.48 a day | 2 softgels · 1,780 mg (57%) · $0.56 a day | 4 pumps (4 teaspoons) · 3,312 mg (106%) · $0.77 a day |
Source: Each brand's label; Amazon prices read October 28, 20264, 5
Every fish oil at its own label dose
What each bottle gives a 50 lb dog if you follow its label, how long the bottle lasts, and what that costs. Need the full arthritis dose? See the cost to reach it on our fish oil dose page. Highest label dose first.
Label dose = what the label says to give a 50 lb dog. Bottle lasts = servings in the bottle divided by that dose. Label dose costs = that dose at the Amazon price read October 28, 2026.
| Product | Label dose, 50 lb | EPA + DHA at label dose | Calories | Bottle lasts | NASC seal | Label dose costs |
|---|---|---|---|---|---|---|
| Nutramax Welactin Omega-3 Fish Oil, liquid (fish oil, pump or liquid, 1,330 mg per scoop) | 1½ scoops | 1,995 mg (127% of 1,560 mg) | not on the label | 53 days | No | $0.57 a day |
| Wonder Paws Omega Max 3x Fish Oil (Alaskan salmon, cod liver, pollock, krill) (fish oil, pump or liquid, 828 mg per teaspoon) | 2 pumps (2 teaspoons) | 1,656 mg (106% of 1,560 mg) | 83 a day | 96 days | Yes | $0.39 a day |
| Deley Naturals Fish Oil (Icelandic wild-caught, 32 oz) (fish oil, pump or liquid, 1,370 mg per teaspoon) | 2 pumps (1 teaspoon) | 1,370 mg (88% of 1,560 mg) | 41 a day | 192 days | No | $0.24 a day |
| Wonder Paws Superhero Norwegian Salmon Oil (8 oz) (salmon oil, pump, 276 mg per teaspoon) | 3 pumps (3 teaspoons) | 828 mg (53% of 1,560 mg) | 123 a day | 16 days | Yes | $0.62 a day |
| Wonder Paws Superhero Norwegian Salmon Oil (128 oz) (salmon oil, pump, 276 mg per teaspoon) | 3 pumps (3 teaspoons) | 828 mg (53% of 1,560 mg) | 123 a day | 256 days | Yes | $0.21 a day |
| Nordic Naturals Omega-3 Pet (soft gels) (fish oil softgels, 255 mg per softgel) | 3 softgels | 765 mg (49% of 1,560 mg) | 30 a day | 60 days | Yes | $0.59 a day |
| Nutramax Welactin Omega-3 Softgel Capsules (fish oil softgels, 255 mg per softgel) | 2½ softgels | 638 mg (41% of 1,560 mg) | not on the label | 48 days | No | $0.52 a day |
| Salveo Petcare Omega 3 Wild Fish Oil Softgels (fish oil softgels, 300 mg per softgel) | 2 softgels | 600 mg (38% of 1,560 mg) | not on the label | 90 days | No | $0.28 a day |
| Vetoquinol Triglyceride OMEGA Liquid and cats (8 oz) (fish oil, pump or liquid, 300 mg per pump) | 2 pumps | 600 mg (38% of 1,560 mg) | not on the label | 118 days | Yes | $0.19 a day |
| Pet Health Solutions Omega-Caps HP Fish Oil (fish oil softgels, 890 mg per softgel) | ½ softgel | 445 mg (28% of 1,560 mg) | not on the label | 500 days | Yes | $0.14 a day |
| WizardPet Wild Alaskan Salmon & Krill Oil Omega Chews, 120 ct (omega chews, 178 mg per chew) | 2 chews | 355 mg (23% of 1,560 mg) | not on the label | 60 days | No | $0.50 a day |
| Nutri-Vet Fish Oil Softgels (fish oil softgels, 300 mg per softgel) | 1 softgel | 300 mg (19% of 1,560 mg) | 10 a day | 100 days | Yes | $0.18 a day |
| Vebelkang Krill Oil Omega 3 Softgels (krill oil softgel, 115 mg per softgel) | 2 softgels | 230 mg (15% of 1,560 mg) | not on the label | 90 days | No | $0.28 a day |
Source: Each brand's label; Amazon prices read October 28, 20264
Fish oil vs salmon oil vs krill oil vs chews
All of these sell the same two omega-3s, EPA and DHA. The fish on the front tells you little. What matters is the EPA + DHA per teaspoon, softgel or chew on the label, because that sets how much you give and what it costs.
| Type | EPA + DHA per serving | Servings to reach 1,560 mg | Cost to reach 1,560 mg |
|---|---|---|---|
| Fish oil, pump or liquid (4 products) | 300 mg to 1,370 mg per teaspoon or scoop | 1.1 to 5.2 | $0.27 to $0.50 |
| Salmon oil, pump (1 product) | 276 mg per teaspoon | 5.7 | $0.41 to $1.18 |
| Fish oil softgels (5 products) | 255 mg to 890 mg per softgel | 1.8 to 6.1 | $0.49 to $1.28 |
| Krill oil softgel (the one we could price) | 115 mg per softgel | 13.6 | $1.89 |
| Omega chews (9 products, from our skin and coat page) | 18 mg to 84 mg per chew | 19 to 89 | $2.00 to $19.36 |
Servings and cost = what it takes to reach 1,560 mg of EPA + DHA a day for a 50 lb dog, at the Amazon price read October 28, 2026.
Salmon oil
Salmon oil strength varies a lot by brand. The labels we read run from 276 mg of EPA + DHA per teaspoon (Wonder Paws Superhero Norwegian Salmon Oil)6 to 966 mg (Grizzly Salmon Plus).7 Read the EPA + DHA line, not the fish name.
A weaker oil means more oil, and oil has calories. Reaching 1,560 mg with Wonder Paws salmon oil takes 5.7 teaspoons, about 232 calories, or 20% of what a 50 lb neutered adult dog needs in a day.8 Deley Naturals Fish Oil gets there in about 47 calories.9
Krill oil
Krill oil carries its omega-3s in a different form (phospholipids) than fish oil (triglycerides). In a 2020 study, 20 Alaskan Huskies ate dry food with 8% krill meal or with fish oil, each giving about 1.7 g of EPA + DHA a day in total. After 6 weeks, the omega-3 index (EPA + DHA as a share of all the fatty acids in red blood cells) rose from 3.9% to 6.3% on krill and from 3.9% to 4.7% on fish oil.10 The one krill softgel we could price, Vebelkang Krill Oil Omega 3 Softgels, prints 115 mg of EPA + DHA per softgel, so reaching 1,560 mg would take 14 a day, at $1.89 a day.11
Pump oil or softgels?
Pump oils cost less a day and need fewer servings. Softgels suit dogs who won't eat oily food. For the most EPA + DHA per softgel, pick Pet Health Solutions (890 mg each).
Omega chews
Omega chews give 18 mg to 84 mg per chew. We compare them on our skin and coat page.
Questions people ask
- What is the best fish oil for dogs?
- For most dogs, Deley Naturals Fish Oil: 2 pumps (1 teaspoon) a day gives a 50 lb dog 1,370 mg of EPA + DHA for $0.24 a day at the label dose. For a softgel, Pet Health Solutions Omega-Caps HP Fish Oil costs $0.14 a day; for the NASC seal, Wonder Paws Omega Max 3x Fish Oil costs $0.39 a day.
- Is salmon oil or fish oil better for dogs?
- Salmon oil is a fish oil, and its strength varies by brand: 276 mg to 966 mg of EPA + DHA per teaspoon on the labels we read. Read the EPA + DHA line and pick the one with the most EPA + DHA per teaspoon.
- Is krill oil better than fish oil for dogs?
- A 2020 study in 20 Huskies found krill raised omega-3 levels more than fish oil at the same EPA + DHA.10 Per dollar, fish oil costs less: $0.27 a day to reach 1,560 mg with Deley Naturals Fish Oil vs $1.89 with the one krill softgel we priced.
- Is Nordic Naturals fish oil good for dogs?
- Nordic Naturals Omega-3 Pet softgels print 255 mg of EPA + DHA each, and the maker holds the NASC seal. At the label dose of 3 softgels a day, a 50 lb dog gets 765 mg (49% of 1,560 mg) for $0.59 a day.
- Can I give my dog human fish oil?
- Plain human fish oil softgels work if you count the EPA + DHA on the label. Never use chewable, gummy or sugar-free products: some contain xylitol, which is toxic to dogs.12
- Does fish oil for dogs go bad?
- Yes. Store it away from heat and sun, and buy a size your dog will finish: at a 50 lb dose these bottles last 16 to 500 days.13
Notes and sources
- EPA + DHA per serving, calories and the dose by weight come from each brand's label, read October 2026. See how we do the math.
- 1,560 mg a day for a 50 lb dog = 69 mg of EPA + DHA per kg, the amount a 2016 arthritis trial used. It is the same yardstick as our fish oil dose page; skin trials used less (see our skin and coat page). Daily calories use the Merck formula for a neutered adult dog.
- Picks are the lowest cost a day to reach 1,560 mg of EPA + DHA for a 50 lb dog among pump oils, softgels and makers with the National Animal Supplement Council (NASC) Quality Seal; the same three as our fish oil dose page, which has the cost to reach 1,560 mg for every oil and a calculator for any weight. Only listings sold by Amazon.com or the brand.
- Product photos come from Amazon.
- Prices checked on Amazon October 28, 2026. Published .
Sources
- Deley Naturals label: Fish Oil (Icelandic wild-caught, 32 oz), read October 2026.
- Pet Health Solutions label: Omega-Caps HP Fish Oil, read October 2026.
- Wonder Paws label: Omega Max 3x Fish Oil (Alaskan salmon, cod liver, pollock, krill), read October 2026.
- Prices: Amazon product data, read October 28, 2026. Cost per serving = listing price divided by the servings in the container.
- Mehler SJ et al., "A prospective, randomized, double blind, placebo-controlled evaluation of the effects of eicosapentaenoic acid and docosahexaenoic acid on the clinical signs and erythrocyte membrane polyunsaturated fatty acid concentrations in dogs with osteoarthritis," Prostaglandins Leukot Essent Fatty Acids, 2016 (PMID 27269707).
- Wonder Paws label: Superhero Norwegian Salmon Oil (128 oz), read October 2026.
- Grizzly Pet Products label: Wild Alaskan Salmon Plus (pump oil, 16 oz), read October 2026.
- Merck Veterinary Manual, "Nutritional Requirements of Small Animals" (resting energy = 70 x kg to the 0.75; neutered adult dog = 1.6 x that), read October 28, 2026.
- Raditic D, Gaylord L, "Fish Oil Dosing in Pet Diets and Supplements," Today's Veterinary Practice, May/June 2020 (side effects include weight gain), read October 28, 2026.
- Burri L, Heggen K, Storsve AB, "Higher omega-3 index after dietary inclusion of omega-3 phospholipids versus omega-3 triglycerides in Alaskan Huskies," Veterinary World, 2020 (20 dogs, 6 weeks, krill meal vs fish oil in the food; authors work for the krill supplier that sponsored it), read October 28, 2026.
- Vebelkang label: Krill Oil Omega 3 Softgels, read October 2026.
- U.S. Food and Drug Administration, "Paws Off Xylitol; It's Dangerous for Dogs," content current as of December 17, 2025, read October 28, 2026.
- Arford K, "Fish Oil for Dogs: What to Know," American Kennel Club, updated August 11, 2026 (the page is sponsored by a supplement brand), read October 28, 2026.
Labels for the products in the tables
- Deley Naturals: Fish Oil (Icelandic wild-caught, 32 oz).
- Nordic Naturals: Omega-3 Pet (soft gels).
- Nutramax: Welactin Omega-3 Fish Oil, liquid, Welactin Omega-3 Softgel Capsules.
- Nutri-Vet: Fish Oil Softgels.
- Pet Health Solutions: Omega-Caps HP Fish Oil.
- Salveo Petcare: Omega 3 Wild Fish Oil Softgels.
- Vebelkang: Krill Oil Omega 3 Softgels.
- Vetoquinol: Triglyceride OMEGA Liquid and cats (8 oz).
- WizardPet: Wild Alaskan Salmon & Krill Oil Omega Chews, 120 ct.
- Wonder Paws: Omega Max 3x Fish Oil (Alaskan salmon, cod liver, pollock, krill), Superhero Norwegian Salmon Oil (128 oz), Superhero Norwegian Salmon Oil (8 oz).