Nordic Naturals Omega-3 Pet, Unflavored - 16 oz - 1380 mg Omega-3 Per Teaspoon - Fish Oil for Large to Very Large Dogs with EPA & DHA - Promotes Heart, Skin, Coat, & Immune Health Review
By Dr. Lena Ortiz · Canine wellness writer · Published 2026-06-02 · Updated 2026-06-27
4.5(12,361)Amazon rating$39.9110,000+ bought last month
Our verdict
Nordic Naturals Omega-3 Pet is a 16 oz unflavored liquid fish oil scaled specifically for large to very large dogs, delivering 1,380 mg of omega-3 per teaspoon, and its 4.5 star average across a massive 12,361 reviews makes it one of the most proven options in this silo.
Owners of large or giant breed dogs who want a high-dose, unflavored liquid fish oil from an established, widely trusted brand.
Skip if
You have a small or medium dog, since this formula and its dosing are specifically sized for large to very large breeds.
Form Liquid
Flavor Unflavored
Benefits Eye Care, Heart Health, Immune Support
Best for Large To Very Large Breed Dogs
Breed size Large
Weight 0.7 Kilograms
Priced 60% above the category median ($24.99 across 75 tracked models)
Our scorecard
4.5/5overall
Owner rating4.5/5
4.5 average across 12,361 owner ratings
Popularity4.6/5
12,361 owner reviews, more than most models here
The overall score is owner satisfaction weighted by how many reviews back it, so a high rating from few reviews counts for less. The bars below show where this model stands against the other dog food and health supplements we track in this category on price, popularity and size. Context, not marks against it, and our read of the data, not a lab test.
Overview
['This 16 oz bottle of Nordic Naturals Omega-3 Pet is an unflavored liquid fish oil formulated specifically for large to very large breed dogs, delivering 1,380 mg of omega-3 per teaspoon. Nordic Naturals is one of the better-known names in the fish oil space, and this pet line carries that same reputation into dog supplements.', "The label ties the formula to heart health, skin and coat support, immune health, and eye care, giving it a broad wellness focus rather than a single narrow use. Being unflavored and liquid, it's built to be mixed easily into food without a strong smell or taste standing out.", "At $39.91, it's priced toward the higher end of the fish oil category, but with 12,361 reviews averaging 4.5 stars and roughly 10,000 bought in the past month, it's clearly one of the best-selling and most trusted options for big dogs."]
Pros
1,380 mg of omega-3 per teaspoon, a high dose sized for large and very large dogs
Unflavored liquid mixes easily into food without a strong smell
Backed by Nordic Naturals, an established name in fish oil supplements
Massive 12,361 review base with a strong 4.5 star average
Broad benefit profile covering heart, skin, coat, immune, and eye health
Cons
Formulated and dosed specifically for large to very large dogs, not ideal for small breeds
Higher price point than several competing fish oils
16 oz bottle may not last long for the biggest dogs given the higher per-dose amount
Specifications
Form
Liquid
Flavor
Unflavored
Benefits
Eye Care, Heart Health, Immune Support
Best for
Large To Very Large Breed Dogs
Breed size
Large
Weight
0.7 Kilograms
Performance notes
Because this formula is scaled for large to very large breed dogs, the 1,380 mg of omega-3 per teaspoon is on the higher end for a liquid fish oil, which fits bigger dogs needing more omega-3 per serving relative to their size. The unflavored profile is designed to blend into food without adding a strong fish taste that could put off dogs unused to oil supplements.
What buyers say
With over 12,000 reviews averaging 4.5 stars and about 10,000 bought in the past month, this is one of the best-selling and most consistently well-reviewed fish oils in this entire category.
No, it's specifically formulated and dosed for large to very large breed dogs, so smaller dogs would likely need a different sized product.
Does this oil have a strong fish smell or taste?
It's labeled unflavored, so it's designed to mix into food without a pronounced fish taste, though some smell is typical for any fish oil.
What does this supplement mainly support?
The label lists heart health, skin and coat support, immune health, and eye care as its main benefits, making it a broad daily wellness oil rather than a single-purpose supplement.
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