The Vet Said Arthritis. You Want to Try Natural First. Why Most of What You'll Be Told to Buy Won't Touch It.

Glucosamine, CBD, rosehip, MCT oil, mussel extract — ask any cat group and you'll get fifteen answers. After twelve years in feline consults, here's the one natural option I've seen tested in actual arthritic cats, and why most cats never get a real dose of it.

Updated 2 May 2026

Read time: 4 mins

Written by Kayla Brooks.

RVN Registered Veterinary Nurse, feline medicine

If your cat is slowing down, this is one of the most important things you'll read this year.

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If your vet said "arthritis" and mentioned the monthly injection, and you thought: not yet. Let me try something gentler first.

 

If you've heard mixed things about the injection and you'd rather not start there.

 

If you asked what else works for your cat's joints  and got a different answer from every person you asked.

 

If you've already bought one or two of those answers and she sniffed the bowl and walked away.

 

If the rest of the advice was "she's old, just leave her as it is."

 

Then this is for you, and I'm going to be blunt about something I watched happen in hundreds of consults.

The Conversation I Sat Through More Than Any Other

I spent twelve years nursing in small-animal practice, most of it in a clinic with a heavy feline caseload. Old cats with sore hips were our regulars.

 

The consult almost always ended the same way. The vet would say arthritis. They'd explain the options: the monthly injection, a pain medication, sometimes an anti-inflammatory with a careful word about her kidneys. And the owner would nod, and then ask me quietly at the desk:

 

"Is there anything more natural and less 'harsh' I can try first?"

 

It's a completely reasonable question. She's old. You'd rather start with food than with pharmaceuticals, and move up only if she needs it. I'd want the same.

 

The problem is what happens next. You go home, you search, you ask a cat group. Glucosamine. Dasuquin. CBD. Hemp treats. Rosehip. MCT oil. Mussel extract. Hyaluronic acid. Every one of them has somebody who swears by it.

 

So you pick one. Then another. And six months later you have a drawer of half-used tubs, a cat who's still not on the bed, and no idea which, if any, did anything.

 

Nobody was doing anything wrong. But I want you to see what each of those actually does, because it explains the drawer.

Why the List Is So Long — and Why Most of It Misses

An arthritic joint isn't one problem. It's three things feeding each other: the pain signal, the inflammation burning inside the joint, and the breakdown of cartilage that inflammation drives.

 

Sort the natural list by which one it touches:

 

Glucosamine, chondroitin, hyaluronic acid, most joint chews — raw materials for cartilage. Bricks. The evidence in cats is thin, and bricks don't help a building that's on fire.

 

CBD and hemp — aimed at the pain signal. Some owners report calmer, more comfortable cats. I've never seen a controlled trial in arthritic cats.

 

MCT oil, rosehip, herbal blends — may well be harmless. Same problem: no trials in arthritic cats that I can point you to.

 

Marine omega-3 — EPA and DHA — aimed at the inflammation itself. And the only one on the list with placebo-controlled trials in cats with confirmed arthritis.

 

That's the whole reason the drawer fills up. Most of the natural shelf is bricks, or guesses. The fire inside the joint — the thing causing the pain and the damage — burns on untouched.

 

She's taking a supplement every day, and she still won't jump on the bed.

 

Because inflammation is the lever almost nothing on that list pulls.

What "Chronic" Actually Means in a Cat's Joints

I'm going to say the thing vets say carefully, because you deserve to hear it plainly.

 

Arthritis doesn't kill cats. What it does is slower. A cat who hurts stops jumping. A cat who stops jumping loses the muscle over her hips and back legs — you can feel it, the spine and hip bones getting sharper under your hand. Less muscle means less support for the joint, more pain, less movement.

 

In twelve years, the "quality of life" conversation with owners of old cats was rarely about one dramatic illness. It was about a cat who had quietly stopped being able to do cat things. "Try natural first" is a good plan. "Try things that don't work for a year" is not a neutral one. Every month the inflammation runs unopposed is muscle she may not get back.

Why Omega-3 Is the ONLY One That's Natural to Her

Here's something most owners never hear.

 

Cats are obligate carnivores. Their bodies can't make EPA and DHA from plant oils the way ours partly can — they don't have the enzyme activity. In the wild, a cat gets it ready-made, from prey and fish. It gets built into her cell membranes, including the tissue around her joints, where it turns down inflammatory signalling at the source.

 

So this isn't a herb or a compound her body has to work out what to do with. It's a nutrient she's built to run on, and one that most indoor senior cats on dry food simply don't get much of.

 

That's also why flaxseed and "omega 3-6-9" blends are useless for her. Plant omega-3 she can't convert. It has to be marine.

What the Research Actually Showed

In a randomised, double-blind, placebo-controlled crossover trial, cats with X-ray-confirmed osteoarthritis got fish oil or a placebo oil for ten weeks each. Neither owners nor researchers knew which. On fish oil, owners reported cats that were more active, used the stairs more, walked with less stiffness, and jumped higher.

 

Not a lab marker. The exact things you've been watching disappear.

 

A second controlled trial fed 40 arthritic cats a diet rich in EPA and DHA and put activity monitors on their collars. Activity went up in the omega-3 group and down in the control group.

 

Laboratory work on cartilage cells adds the third piece: omega-3s turn down the enzymes that break cartilage down. Not more bricks — less fire.

 

On the dose. A veterinary review gives empirical feline intake ranges:

  • EPA: 17–25mg per kg of bodyweight, per day
  • DHA: 8–18mg per kg, per day

For a typical 4kg cat, that's roughly 68–100mg of EPA per day. Remember that number — most "cat fish oil" never tells you what a dose delivers.

 

So the real question isn't "which natural supplement?" It's:

 

Can I get a real, fresh, measured dose of marine omega-3 into a fussy senior cat every single day, without a fight?

Cats Love Fish. So Why Do They Walk Away From Fish Oil?

Because I recommended it for years, and I watched it fail for reasons that had nothing to do with the science.

 

The bottle changed on the counter. EPA and DHA oxidise. Every pump lets in oxygen and light. By week three the oil has turned — slowly enough that your nose misses it. Hers doesn't. A cat who loves fish and refuses fish oil isn't being fussy. She's telling you it's off. And oxidised oil is the last thing you want going into an inflamed joint.

 

She wouldn't eat it, and it cost her a meal. You add it to the one food she trusts, she sniffs and leaves, and now a thin old cat has skipped dinner. For these cats palatability isn't a feature. It's the entire delivery system.

 

The dose was a guess. One pump, two pumps, for a 4kg cat, from a bottle designed for a labrador.

For most of my career the honest advice was: "the evidence is good, but I don't know a way to actually get it into your cat."

 

Then I found the one product that fixed all three.

What Fureeze Built — and Why It's Different

Fureeze is an Australian company (they ship to the US and UK too) whose founder ran into the same four walls. He couldn't find a fish oil that was still fresh on day 28, that a fussy old cat would reliably eat, that didn't need a wrestle, or that told you the dose. So they stopped selling bottles altogether.

 

Every serving is sealed in its own snap-pack. Snap, squeeze over food, done. No pump, no pilling, no fridge. Each pack stays airtight — with vitamin E as a further guard — until the moment it hits the bowl. Day 28 smells exactly like day 1. Which means it smells like fish, not like a bottle that's been open for a month.

 

Then they published the numbers most brands hide:

 

Inflammation

  • 160mg EPA, 118mg DHA — 278mg combined per snap-pack
  • Antarctic krill oil, 100mg — omega-3 carried on phospholipids, taken up by a different route from standard fish oil

Oxidation and breakdown

  • Astaxanthin 2mg — the natural antioxidant that makes krill red — and natural vitamin E

The rest of a senior cat

  • Taurine 120mg, plus a probiotic (Lactobacillus plantarum, 100 million CFU)

Anchovy. Krill. Goat milk. No synthetic actives. Nothing on the label you'd need a pharmacology degree to read.

 

On the dose. The range for a 4kg cat is 68–100mg EPA a day. One snap-pack is 160mg. For a smaller cat, start with half a pack for the first week, then move to a full one. You can't do that with a capsule. You can with a pack you squeeze.

"What If She Ends Up Needing the Injection Anyway?"

Then she gets it, and you've lost nothing.

 

I've watched the monthly injection give old cats their lives back, and if your vet says it's time, I'd listen. But it does one job: it blocks the pain signal. It doesn't touch the inflammation underneath. Omega-3 does the other job. So the snap-pack you start with today is the same one she'd stay on next to the injection later. Starting natural isn't a detour. It's the first layer.

 

And if her kidneys are part of the picture, as they are for a lot of cats her age, marine omega-3 is one of the few supplements vets already reach for in kidney cats. Tell your vet you're adding it. I'd be surprised if they object.

Will She Actually Eat It?

Everything above is worthless if it fails the only test that matters with an old cat.

 

Fureeze ran an in-house double-blind palatability trial across 200 domestic cats under controlled feeding conditions, against the major fish-oil brands.

⭐⭐⭐⭐⭐ "My vet asked what I'd changed in my cat's diet. Said first thing — this." 

— William C., Verified Buyer

 

⭐⭐⭐⭐⭐ "My senior cat Monkey is jumping on my dinner table again, should've fed omega oil to him when he was still a kitten :(" 

— Mary M., Verified Buyer

 

⭐⭐⭐⭐⭐ "I highly recommend Fureeze for owners with senior cats, my two rescue cats seem a lot more energetic now." 

— Priya S., Verified Buyer

 

It works out to about a dollar a day. Compared with the heavier options — and compared with doing nothing — it felt like a simple place to start.

 

Reviewed at 4.7/5 across 2,500+ verified UK and US customers.

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What UK and US cat parents are saying

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If you noticed your cat isn't jumping around as much

If the change was sudden or severe, see your vet first — arthritis is a conclusion your vet should reach, not one you should assume.

 

But if your story is like mine — gradual, subtle, a senior cat slowly editing the jumps out of her life — then understand what "wait and see" actually means. The stiffness she's hiding doesn't pause while you decide. Every month is another month of her remaining years spent on the floor instead of the windowsill, beside the bed instead of on it.

 

You can't make her young again. But you can absolutely change how she spends the years she has left.

 

One sachet a day. 28 days per box. The research window is about four weeks — which means within a single box, you could know whether she's one of the cats who gets her jump back.

️🎊 Mid Year Sale ️🎊

00
DAY
00
HRS
00
MIN
00
SEC

ACT Now And Receive
50% Off Your Order

Check Availability

HIGH Risk of Sell-out

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FREE shipping

Try it today with a 90-Day Money Back Guarantee!

Kayla Brooks is a vet nurse and lifelong cat owner. This article includes affiliate links; Fureeze provided product for review but did not approve the final copy. Always consult your vet before introducing a new supplement, especially if your cat is on medication, has pancreatitis, or is pregnant.

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