Nutramax Welactin Omega 3 Fish Oil for Dogs
- Fish Oil
- 15.9 fl oz
- 1
- 1
- Better rated than 73%
- More reviewed than 85%
A broad-spectrum liquid fish oil supplement, useful as a general addition to a dog's diet for skin, coat and joint support.
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How it ranks among the 78 fish oils we track
4.6★ across 6,882 Amazon ratings, Bayesian-smoothed toward the category average.
6,882 Amazon ratings, weighted on a log scale so huge counts don't drown everything.
10,000+ bought on Amazon last month.
Brand identity, imagery, description and spec coverage.
The ProductDome score is separate from the Amazon rating shown above: it combines the Bayesian-smoothed Amazon rating with evidence volume, tracked demand, and data quality across the 78 fish oils we track - how the scorecard works · full fish oils data report. Confidence: high - strong rating volume and complete data.Last refreshed Aug 4, 2026. Data-computed, not a hands-on test. Compiled by the ProductDome Research Team.
Overview
In a 16 oz liquid bottle, Nutramax Welactin packs salmon-oil omega-3s meant to cover skin, coat, joint, immune, kidney and brain support in one supplement.
Fish oil supplements are one of the more common additions to a dog's diet, and Welactin's pitch is breadth rather than a single narrow use. As a liquid rather than a capsule or chew, dosing is done by pumping or measuring it directly onto food, which is a different routine than a pre-portioned capsule.
- 16 oz liquid bottle
- Salmon oil based omega-3 fatty acids
- Supports skin, coat, joint, immune, kidney and brain health
- Suitable across small to large dog breeds
Who it's for
General-purpose buyers wanting a liquid omega-3 to mix into a dog's regular food fit this best. Owners needing a precise, pre-measured dose may prefer a capsule instead.
Strengths and trade-offs
Drawn from this product's published specifications.
- Liquid form mixes directly into food
- Lists support beyond coat, including joints and kidneys
- Suitable across small, average and large dog breeds
- Liquid dosing is less precise than pre-measured capsules
- No clinical claims beyond the ingredient-based benefits listed
Performance notes
The formula is built around omega-3 fatty acids from salmon oil, which Nutramax lists as supporting skin and coat health primarily, with secondary claims around joint, immune, kidney and brain function. Because it's a liquid, the exact dose per serving depends on how it's measured or pumped rather than coming pre-portioned.
Specifications
| Brand | Nutramax |
|---|---|
| Model | WEL16 |
| Dimensions & fit | |
| Item Weight | 15.2 ounces |
| Dog Breed Size | Large |
| Capacity & performance | |
| Volume | 15.9 fl oz |
| Included components | |
| Unit Count | 1 |
| Other details | |
| Number Of Items | 1 |
| Asin | B001FB6ECQ |
| Upc | 755970303216 |
| Manufacturer | Nutramax Laboratories Veterinary Sciences, Inc. |
| Best Sellers Rank | #842 in Pet Supplies (See Top 100 in Pet Supplies) #9 in Dog Fish Oil Supplements |
| Product Benefits | Skin Care |
| Customer Reviews | {'ratings_count': '6,882', 'stars': '4.6'} |
| Item Form | Liquid |
| Active Ingredients | omega 3,fatty acids,salmon oil |
| Specific Uses For Product | average, large, small |
| Item Type Name | Supplement |
| Target Species | Dog |
| Manufacturer Part Number | WEL16 |
| Model Number | WEL16 |
Other Nutramax fish oils
How it compares
This product against the closest alternatives we track in fish oils.
| Product | Amazon rating | Ratings | ProductDome score |
|---|---|---|---|
| Nutramax Welactin Omega 3 Fish Oil for DogsThis product | 4.6 / 5 | 6,882 | 4.6 / 5 |
| Natural Dog Company Wild Alaskan Salmon Oil for DogsNatural | 4.6 / 5 | 13,677 | 4.6 / 5 |
| Fish Oil for Dogs, Salmon Pollock Liquid Omega 3, 64 oz | Soft Shiny Glossy Coat, EPA…Fish | 4.6 / 5 | 8,505 | 4.6 / 5 |
| Zesty Paws Wild Alaskan Omega-3 Blend Pollock + Salmon Oil for Dogs and Cats- Skin and…Zesty | 4.5 / 5 | 69,592 | 4.5 / 5 |
| Salmon Oil for Dogs & CatsSalmon | 4.5 / 5 | 29,145 | 4.5 / 5 |
Similar fish oils from other brands
Questions about the Nutramax WEL16
Common buyer questions answered straight from the product spec data - no fluff, no "it depends".
What form does Welactin come in?
A liquid, sold in a 16 oz bottle.
What's the primary ingredient?
Salmon oil, providing omega-3 fatty acids.
Is this made for a specific dog size?
No, Nutramax lists it as suitable across average, large and small dogs.