Comments on: 10 Best Omega-3 Fish Oils for Cats: Tested and Reviewed

By: Cats.com Editorial Team

Cats.com Editorial Team — Wed, 24 Sep 2025 17:36:34 +0000

In reply to Chase. Good catch, we will look into this on the next article update

By: Chase

Chase — Mon, 22 Sep 2025 18:46:07 +0000

Any opinions on Ultra Oil? I was surprised not to see it on the list.

By: Chris

Chris — Tue, 21 Mar 2023 00:44:16 +0000

Conversion from kgs is going to be interesting. My first thought is that, if they are not dosed every day, in every feeding, an overdose is extremely unlikely. My second thought is that I forgot to mention that 255 mcg = 850 IU of Vitamin A. So, if I understand your findings correctly, 1 tsp. of cod liver oil contains 850 IU of A, with minimal requirements of 5,000-9,000 IU (depending on life stage), and a max of 750,000 IU (if I understand you correctly); 400 IU of D (with MDAR of 500-750 IU, depending on life stage) and a max of 10,000 IU; and 6.7 mg of E (my label does not give IU), and there is no apparent max given. So, the amounts of these nutrients in one teaspoon of cod liver oil are quite a bit below MRs or DVs, and substantially below toxic levels. The big question is: What are they getting from their food? I do not have misplaced faith in labels, nor corporate obsession with truth and accuracy; but that is all we have to work with, unless you want to conduct a lab analysis with each container of food. And you should take it seriously (witness the recent recall for cat food overdosed with Vitamin D). However, even the most careful monitored manufacturing processing results in a range of values buffered by statistics–still, I wonder about the cheaper brands (or, shall I say, less fidelity to exactitude). But, for a serving of cat food, for one cat, you would be talking about closer to an eyedropper than to a teaspoon of cod liver oil. Then, they might just reject it. You might have to go down to one drop. Or none. Those amounts would certainly be safe, and the best benefits of that supplementation might be the omega-3 fatty acids.

By: Mallory Crusta

Mallory Crusta — Mon, 20 Mar 2023 21:56:36 +0000

In reply to Chris.

Hello Chris, my apologies for the late reply. Hope you’re doing well. This is a good and thoughtful question—I’m glad you’re thinking so critically about this. You’d have to know exactly how much vitamin A, E, and D your cats are already getting from their food to know whether or not your cod liver oil supplement fits within the recommended daily dose, but the

According to the AAFCO, cats have a Vitamin A requirement of:
At least 9,000 IU/kg DIET (not bodyweight)- kittens or nursing
At least 5,000 IU/kg – adults
Up to 750,000 IU/kg of food.

Vitamin D: 750 IU/kg food for kittens, 500 IU/kg for adults, and no more than 10,000 IU/kg.

Vitamin E: at least 30 IU/kg for both kittens and adults, and no established maximum level.

So I would make sure that you know how much is in your cats’ existing food and work from there. Hope this helps!

By: Chris

Chris — Sat, 11 Mar 2023 17:45:44 +0000

I understand your caution about cod liver oil, but what are safe dietary levels for Vitamins A, D, and E in kittens and adult cats? I use a cod liver oil for myself (Carlson), and I could use an unflavored version of that product if I use a safe amount for my adults or kittens. It is rich in DHA, EPA, and DPA; and 1 tsp. contains 255 mcg RAE of Vitamin A, 10 mcg (400 IU) of Vitamin D, and 6.7 mg of Vitamin E (as d-alpha tocopherol). I also have cats that have miliary dermatitis that would probably benefit from this supplement (yes, flea control is essential, but flea elimination is not possible in these cases). So, if I could use cod liver at a safe level, it would be helpful. Of course, it might just be irrelevant, because they might just reject it.
By the way, I think you do a great job, Mallory.
-CH.

By: Mallory Crusta

Mallory Crusta — Mon, 14 Nov 2022 01:22:32 +0000

In reply to Aisha. Hello Aisha, I've seen good things about Nordic Naturals—it's regarded as a reputable brand, and it seems you can trust its concentrations of relevant fatty acids.

By: Aisha

Aisha — Sat, 12 Nov 2022 14:03:17 +0000

My Scottish fold cat has been diagnosed with osteochondrodysplasia and the vet told me to read and look into fish oils do you know exactly which brand would help ease the pain more?? Thanks

By: Mallory Crusta

Mallory Crusta — Tue, 09 Aug 2022 14:32:14 +0000

In reply to Jim. Good catch, Jim. I'm editing that. Thanks!

By: Jim

Jim — Sat, 06 Aug 2022 02:17:51 +0000

Was puzzled by the What We Didn’t Like statement-for the for Vital Pet Life Wild Alaskan Salmon Oil For Cats–“Small quantity for the price.” It’s half the cost of the Zesty Paws…