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★★★★★ 4.8/5.0 (1,240) · 10,412 owners

Skin & Coat Collagen Serum

Everything else was aimed at the reaction. This is aimed at the barrier underneath it.
  • Use alongside Apoquel, Cytopoint or any current medication.
  • Supplies what the skin barrier is built from — daily.
  • Liquid. No chicken. Disappears into the bowl.

How many bottles?

Trying it out
1 Bottle60 mL · around a month for a small dog £29.99
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Most chosen
Buy 2, Get 1 Free3 bottles · 8–12 weeks' supply £59.98£89.97
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  • Covers the eight weeks we ask you to give it
Best value · large dogs
Buy 3, Get 2 Free5 bottles · 4–6 months' supply £89.97£149.95
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  • Takes a large dog through to the coat
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90 days to change your mind.Email us any time inside ninety days and we refund you in full. No part-used bottles to send back, no form, no explaining yourself.

Not sure how much they need? See the dosage chart →
Most owners notice something between weeks four and eight, starting with the scratching. The coat comes later — usually months two to three. Week one you'll see nothing, and that's normal. Give it eight weeks before you decide. That's why the guarantee runs for ninety.
Yes. It isn't a drug, so there's nothing to switch. You don't have to change anything about their medication — whether they're on it, coming off it, or you stopped a year ago.
No. The collagen is grass-fed beef and the flavour base isn't poultry either. Chicken is one of the most common triggers in dogs and one of the first proteins most owners take out.
1 mL under 25 lbs, 2 mL for 25–50, 3 mL for 50–75, 4 mL for 75–100, 5 mL above that. The full feeding guide is on the last slide above, and in the supplement facts further down.
400mgCollagen per mL
90 DaysMoney-back guarantee
No ChickenGrass-fed bovine
0Fillers or binders
YesWorks with medication
Trusted by
10,412 dog owners

Since 2022 — across the UK, Ireland and the US.

A woman in a grey sweatshirt holding the Noramyx bottle in her kitchen, a West Highland White Terrier at her side.
RachelBonnie · Westie
A woman crouched beside a German Shepherd in a utility room, holding the Noramyx bottle toward the camera.
PriyaKai · German Shepherd
A man sitting on the stairs holding the Noramyx bottle, his Boxer sniffing the opened delivery box.
MarcusDex · Boxer
A woman in a gilet holding the Noramyx bottle on her patio, a Cocker Spaniel sitting beside her.
JeanPoppy · Cocker Spaniel
A woman sitting on a living-room floor holding the Noramyx bottle, a French Bulldog on her lap.
MeiOtis · French Bulldog

Most of them found us the same way — three years into it, somewhere around midnight, after the drops and the diets and the third change of food. Nobody arrives here first. They arrive here last, which is why we'd rather give you ninety days than a promise.

Simple routine

Three steps, once a day

A hand holding a glass dropper filled with golden liquid above an open amber bottle, a single drop falling from the tip.
1

Fill the marked dropper

Marked by millilitre, so there's no guessing.

A hand pouring the golden liquid from the dropper over a bowl of kibble on a wooden floor, with a golden retriever lying behind the bowl watching.
2

Pour it over their food

Wet or dry, doesn't matter. It disappears into it.

A golden retriever eating from a stoneware bowl on a wooden floor, with the bottle already set aside on the worktop behind.
3

That's it

No baths, no pills, no standoff at the bowl.

Over 50 lbs? Don't order one bottle.

A big dog gets through a 60 mL bottle in two to three weeks — so one bottle runs out before there's anything worth looking at.

Three bottles is around nine weeks — the eight-week window we ask you to give it, with room either side. Five takes a large dog through to the coat, at about 90p a day. Apoquel runs around £2.

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What to expect

Weeks. Not days. And in this order.

Here's what to look for, and roughly when.

Week 1

Getting started

One dropper over dinner, every day. The barrier rebuilds daily, so daily is what counts.

Weeks 2–3

The nights get quieter

Settling earlier, less moving about at 3am. Usually the first thing owners notice.

Weeks 4–8

Where most owners notice properly

Less scratching, less chewing at the paws, sore patches closing over. The coat picks up a bit of shine and they seem happier in themselves.

Months 2–3

The coat

Thicker, darker, glossy, filling in where it had thinned. The stage other people comment on.

From there

The dog you remember

The energy, the playing, the daft bits. The reason you started looking.

Give it eight weeks. The guarantee runs for ninety.

Real dogs

Same dogs, weeks apart

Two owners, photographing the same dog weeks apart. Durations as reported.

Side-by-side photographs of a West Highland White Terrier's front paws, before and after.
Mac — Westie, 11 weeks
Side-by-side photographs of a German Shepherd's hindquarters, before and after.
Bo — German Shepherd, 20 weeks
The formula

What's actually in the bottle

Four ingredients. One dropper. Printed at the strength they're actually dosed at.

A small pile of pale cream-coloured collagen powder on a warm cream surface.

hydrolysed collagen

400mg

Grass-fed bovine, cut into short peptides so it crosses the gut wall instead of passing through.

A small pile of white crystalline vitamin C powder on a warm cream surface.

vitamin C

20mg

Collagen can't be put to work without it. Most skin supplements leave it out.

A small pile of fine white biotin powder on a warm cream surface.

biotin

1.5mg

The coat side. Thickness, shine and shedding — the part other people notice.

A small pile of translucent flaky hyaluronic acid powder on a warm cream surface.

hyaluronic acid

1.0mg

Holds moisture in the skin. Repair on a dry surface is slow repair.

Per 1 mL serving · 60 servings per bottle
Hydrolysed bovine collagen peptides400 mg
Vitamin C (ascorbic acid)20 mg
Biotin1.5 mg
Hyaluronic acid1.0 mg

Other ingredients: purified water, vegetable glycerine, natural bacon flavour, potassium sorbate. Contains no chicken, wheat, soy, dairy or artificial colours.

Feeding guide, once daily over food: under 25 lb — 1 mL · 25–50 lb — 2 mL · 50–75 lb — 3 mL · 75–100 lb — 4 mL · over 100 lb — 5 mL.

Shake before use. Refrigerate after opening. These statements have not been evaluated by the FDA. Not intended to diagnose, treat, cure or prevent any disease. Consult your veterinarian before use.

Ten things that aren't in it.

ChickenWheatSoy Corn syrupXylitolFillers BindersArtificial colours Artificial flavoursAdded sugar

Nine of them are housekeeping. The first one is the point. Chicken is one of the most common triggers in dogs, and it's usually the first protein an owner takes out. Putting it into a skin product would undo the reason you bought it.

Why it's a liquid, and not a chew

Heat to make it, binders to hold it — the exact step that took this material out of the food in the first place.

noramyx ChewsChews & powders Powders
No heat processingThe step that removed it
Nothing to pick out
No binders or bulking agentsOftenSometimes
Dosed by the millilitreNot per chew or scoopPer chewPer chew or scoopPer scoop
All of it gets eatenIf they eat itOnly if eatenSome in the bowl

A point about the format, not our bottle.

One thing we'd rather say ourselves

You'll find other companies selling collagen for dogs. That it isn't a secret is evidence it's real, not evidence we're all the same.

The difference is what it's sold for. Most of it is a coat supplement for an older dog. We're supplying the material the barrier underneath it ran out of.

What it works on

Why the allergy treatment keeps wearing off.

Your vet answered the first question — what he's reacting to. This is the answer to the second one.

Their skin has a barrier that keeps pollen, dust and grass on the outside.

It's built from collagen, and it rebuilds itself every single day.

Rebuilding it takes material from their food — and that material isn't in there.

So it never gets finished, and everything gets in. At which point their immune system does exactly what it's supposed to do. It reacts.

LEFT OF FRAME

A barrier with supply. What lands on it stays on it.

RIGHT OF FRAME

A barrier running short. The gaps open, and what should have stayed outside gets through.

UNDERNEATH

The layer that was supposed to be protected. This is where the reaction happens.

Your dog isn't allergic to the world.
Their skin has just been left open to it.

What owners say where we can't edit it

Screenshots from breed groups and messages, unretouched.

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Zero risk

You don't have to choose.

You do not have to stop his Apoquel or Cytopoint to start this.

You don't have to change anything about his medication — whether he's on it, coming off it, or you stopped a year ago. This works on supply. The drug works on the reaction. Different targets, no conflict.

Nothing is being taken away. Something is being added.

A circular badge showing the number 90 beneath an outline of a dog's head, framed by laurel.
DAY GUARANTEE

90 days. Full refund.

Not 60. Ninety — because the honest answer to "how long?" is four to eight weeks, and 60 days leaves you almost no room to decide.

Email us inside ninety days and we refund you in full. No returning the bottle. No form. No explaining yourself.

Any last questions?

Yes. It isn't a drug, so there's nothing to switch. Nothing is being taken away. Something is being added.
We're not asking you to throw out the diagnosis. What your vet identified — the trigger — is real. But the trigger only explains what sets a flare off. It doesn't explain why so much gets through, or why the medication wears off faster every time. That's the barrier. This supplies what the barrier is built from. The two aren't in competition.
Weeks four to eight for the scratching. Months two to three for the coat. Week one, nothing — that's normal.
It gets broken down, yes — that's the point, and it's why the form matters. Whole collagen is too large to cross the gut wall intact. Ours is hydrolysed: the chain is already cut into short peptides, so it crosses, circulates and reaches the skin as building material.
She probably is. Some dogs have much more room for error than others, and the ones with the least margin are the ones who show it first — which is why it tends to be Westies, Boxers, Bulldogs and Shar Peis. Your dog isn't defective. They just had less room to absorb the shortfall.
Elimination diets do a different job. They remove things your dog reacts to. They don't put back material that isn't there. It's completely possible for fourteen months of novel proteins to change nothing and for this to still be worth trying — they're aimed at different things.
Probably, yes — and we wouldn't ask you to throw out a diagnosis. A known trigger explains what sets a flare off. The barrier is about how much gets through, and how badly they react when it does.
No. This isn't an age thing. If the material has been missing from their food since weaning, they've been short of it their whole life — which is exactly why plenty of two- and three-year-old dogs already have chronic skin problems.
No. Grass-fed beef, and the flavour base isn't poultry either.
Half dose for the first week, then build up. It goes in with food rather than on an empty stomach, which helps.
It's food material, not a drug — the same connective-tissue protein dogs ate as a matter of course for most of the last century. As with anything new, mention it to your vet, especially if they're on medication or being treated for something.
Then they're like most of them. That's the reason this is a liquid and not a chew — once it's poured over the food there's nothing left to pick out.
Because it isn't a new discovery, it's an old omission. Connective tissue quietly stopped being a normal part of what dogs are fed, and the industry that grew up afterwards has spent its time treating the result rather than asking about the cause.
Email us inside ninety days and we refund you in full. No returning part-used bottles, no form, no explaining yourself. One claim per household, first order.
Ninety day guarantee badge.

They aren't allergic to the world.

They've just been left open to it — because the material their skin rebuilds from stopped arriving in their food, three generations before they were born.

You can't undo that. But you can start putting it back tomorrow morning, over their breakfast, without taking anything away from them while you wait.

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A wet cocker spaniel sitting in the boot of a car.
An english bulldog lying on a kitchen floor.
A golden retriever asleep upside down on a sofa.
A freshly groomed shih tzu standing on a doormat.
A muddy boxer standing on a wet path.
A german shepherd trotting across a park.
A west highland white terrier standing in a back garden.
A french bulldog in a party hat.
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★★★★★Hannah B.✓ Verified19/07/2026
A wet cocker spaniel sitting in the boot of a car.

cocker spaniel, 7. it was always the ears with her, back and forth to the vet every few months for drops and then it would come back. we are 11 weeks in and shes not been back once. she still comes home from every walk looking like this so nothings changed there

★★★★★Danielle W.✓ Verified14/07/2026
An english bulldog lying on a kitchen floor.

hes a 6yr old english bulldog and the folds and his feet were the worst of it. im on bottle 4 now. first month i honestly thought id wasted my money then somewhere in week 5 i realised i wasnt hearing him at night anymore. the feet took longer. still not perfect but its not blood and cone anymore which is where we were in march

★★★★★Marie T.✓ Verified11/07/2026

Still on his Apoquel before anyone asks!! I was not going to take that away from him after everything. Nobody told me I had to and thats honestly why I ordered. Vet knows, shes fine with it, and we are having a conversation next month about maybe dropping to every other day. Never thought Id be having that conversation

★★★★★J. Okonjo✓ Verified08/07/2026
A golden retriever asleep upside down on a sofa.

golden retriever, 8. the coat is the thing everyone comments on, took about 10 weeks for that bit though so dont panic at week 3. this is him most evenings now. before he couldnt settle for more than about 20 mins without getting up to chew something

★★★★★Kelly M.✓ Verified02/07/2026
A freshly groomed shih tzu standing on a doormat.

the groomer asked me what id changed. that was month two. shes been doing him since he was a puppy and shes never said that before. thats when i actually believed it

★★★★☆Priya S.✓ Verified28/06/2026
A muddy boxer standing on a wet path.

week 3 and only a small change so far if im honest. hes a boxer, 4, and the belly is still pink. sticking with it because nothing else has lasted this long and everyone says give it 8 weeks. will come back and update. hes happy enough as you can see

★★★★★Rob T.✓ Verified21/06/2026
A german shepherd trotting across a park.

german shepherd. the shedding was unreal, we were hoovering twice a day and there were bald bits behind his back legs. thats filled in now. dosing is easy, goes straight in with his food and he doesnt even notice, which is more than i can say for the powders we tried

★★★★★Barbara L.✓ Verified25/06/2026

we went through salmon, duck, venison, and hydrolyzed protein over 14 months. nothing changed. my vet never once mentioned the skin barrier. im not saying this is a miracle but its the first thing anyones given me that actually explained why none of it worked

★★★★★Sam & Otis✓ Verified16/06/2026
A french bulldog in a party hat.

frenchie, 3. his birthday last week and he actually let us put the hat on which tells you how much calmer he is generally. the itching used to make him snappy in the evenings. thats gone

★★★★★Louise H.✓ Verified09/06/2026
A west highland white terrier standing in a back garden.

westie so you can imagine the paws, they were rust brown up to the ankle and she licked them constantly. this is her now. took about 9 weeks for the staining to properly grow out. i keep looking at old photos on my phone and its a different dog