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Back 40 Liquid Collagen
Back 40 Liquid Collagen
Back 40 Liquid Collagen
Back 40 Liquid Collagen
Back 40 Liquid Collagen
★★★★★ 4.8/5 · 3,783 reviews · 15,000+ happy dogs
Itch relief from the inside out

Ease the Endless Scratching & Support Calmer Skin & a Fuller Coat By Feeding This Liquid Gold

Without switching foods, costly vet visits, or bribing your dog to swallow a pill. Just a few bacon-flavored drops on their bowl a day.

✓Supports healthy skin barrier & a fuller, shinier coat
✓600 mg grass-fed beef collagen per serving with MSM, Biotin & Vitamin C
✓Tastes like bacon — no bribing, just a few drops
✓Made in the USA · safe for dogs & cats
Add to Cart
✓ · Ships Within 24 Hours
Back 40 Standard
Backed by the B-40 Standard
Try it risk-free for 90 days. Not seeing calmer skin? Full refund — no questions asked.
How long until I see results?

Most owners notice calmer skin and less scratching in 4–6 weeks of daily use, with coat shine and fullness following as the new coat grows in. Every dog is different — the 90-day B-40 Standard gives you time to see it for yourself.

How do I give it to my dog?

Just a few bacon-flavored drops on their food once a day — 2.5 mL per serving using the built-in dropper. No pills, no switching foods, no bribing.

Is it safe for dogs and cats?

Yes. Liquid Collagen is formulated to be safe for both dogs and cats of all ages. As with any supplement, check with your vet if your pet has a medical condition or is pregnant.

Ingredients

Active stack: Beef Collagen Peptides, MSM, Vitamin C, Biotin. Inactives: water, vegetable glycerin, natural bacon flavor, and potassium sorbate to keep it fresh. Made in the USA.

How does the 90-day guarantee work?

Try it risk-free for 90 days. If you're not seeing a difference, email us at woof@back40dogs.com for your money back. That's the B-40 Standard.

Can I cancel my subscription?

Anytime. Subscribe & Save ships automatically and locks in your discount, but you can skip, reschedule, or cancel from your account in a couple of clicks.

★★★★★

“Three weeks in and the 2 AM scratching stopped. By week six her coat was noticeably fuller and shinier. She thinks the drops are a treat!”

Melissa T.
Verified buyer · dog mom to Willow
Melissa's dog
MADE IN THE USA ✓ SAFE FOR DOGS & CATS ✓ LESS ITCHING ✓ SUPPORTS HIP & JOINTS ✓ SUPPORTS NAILS ✓ PICKY EATER APPROVED   ✓   

Your All In One Nature Inspired Solution For Itching, Scratching Pets

Same dog, just with more of the core ingredients he was losing every year as he aged added back to his bowl. This is what supporting the skin barrier from the inside looks like.

Dog's coat before Liquid Collagen
Dog's coat after Liquid Collagen
River - Using Liquid Collagen For 90 Days

If your dog is scratching at 2 AM, you've probably tried everything — new foods, wipes, sprays, another vet bill.

Most owners come to us with the same picture: raw, itchy skin and a dull coat that sheds everywhere.

Many tell us the scratching starts to settle and the flaking calms in the first 4–6 weeks, but that's just the beginning.

Skin and coat renew slowly, so the fullest, shiniest results build over a full 90-day cycle of daily servings. That's why pet owners who invest to the whole 90 days see the best results: keep the drops going even after you see early progress, and let your dog's body do the deeper work.

It's not magic. It's grass-fed beef collagen plus MSM, biotin, and vitamin C supporting the skin barrier from the inside out, day after day. 

The same stuff your dog's body used to produce but declines every year as they age added back to their bowl.

Back 40's Liquid Collagen Goes Where Chews & Shampoos Can't

Sprays and shampoos sit on top of the problem while chews are so highly processed the good stuff is baked out. Liquid Collagen is highly absorbable & works from the inside. It feeds the skin, coat, and joints the building blocks your dog makes less of every year.

1
Drop it on food.
A few drops on their food once a day with our easy dropper.
2
It goes to work.
Grass-fed collagen, MSM, biotin & vitamin C absorb and support the skin barrier, coat, and joints from within.
3
She renews.
Calmer skin and less scratching in 4–6 weeks, with a fuller, shinier coat building over the full 90 days.

This is how the nutrition your dog loses with age gets added right back to their bowl.

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Powerful Ingredients That Bring Real Results

While our unique formula centers on science, every ingredient is hand-selected to deliver real results and fuel more memories.

Grass-Fed Bovine Collagen
Skin · coat · joints

Grass-Fed Bovine Collagen

Type I & III peptides from grass-fed cattle — the structural protein that supports skin elasticity, a fuller coat, and healthy connective tissue.

MSM
Comfort · mobility

MSM

A naturally occurring sulfur compound that supports skin comfort and normal joint mobility — relief from the inside out.

Vitamin C
Antioxidant support

Vitamin C

Supports your dog’s natural collagen production and acts as an antioxidant to help the body do what it’s built to do.

Biotin
Coat · skin barrier

Biotin

A B-vitamin that supports keratin structure for a stronger coat and a healthy skin barrier.

Help Your Dog Age More Gracefully

Collagen naturally declines with age — taking joints, skin, coat & immunity down with it. So we built a once-a-day formula to help replenish what the years take.

Here's what owners tell us happens after 3 months of daily Back 40 Liquid Collagen.

Results Your Dog Will Love *based on an in-house study of customers
Happy dog
91%

of owners reported visible changes in their dog’s coat shine & texture within 2–4 weeks of daily use.

Happy dog
87%

said their dog had more energy and improved mobility after 2–4 weeks of daily use.

Happy dog
90%

of owners reported noticeably less itching & scratching within 2–4 weeks of daily use.

Why Pick Our Formula From the Farm?

This is strategic daily support for your dog, NOT a junk food highly processed treat.

Back 40 Liquid Collagen Back 40
Typical chews
Typical Chews
Liquid formula
✓
✕
Easy to absorb
✓
✕
Canine-nutritionist formulated
✓
✕
Skin + joints in one
✓
Sometimes
Measurable dose
✓
Hard to split
Made in the USA
✓
Made overseas
Straight from the pack

Real Dogs. Real Owners. Real Results.

Tap through what owners are sharing after switching to Back 40.

Sarah K.
★★★★★

“The 2 AM scratching is gone. By month two her coat was so soft the groomer asked what we changed.”

Sarah K.
Verified buyer · mom to Nala, 8 yr Australian Shepherd
Marcus R.
★★★★★

“He hears the dropper and comes running — thinks it’s a bacon treat. Less shedding all over the truck too.”

Marcus R.
Verified buyer · dad to Duke, 5 yr Golden Retriever
Jenna P.
★★★★★

“My girl is getting older and is moving better on our morning walks, her coat looks years younger, and way less itching. Worth every penny.”

Jenna P.
Verified buyer · mom to Ray, 6 yr German Shepherd
Founder with dogs on the farm
Jack & the pack — on the back 40
Our story

The Pet Industry Failed My Dog, So I Built Something Better.

It started with my own dog. When nothing on the shelf was actually helping him, I went and got certified as a canine nutritionist to figure out what he really needed — then started making it myself with simple, proven superfoods.

People kept asking what I was feeding Cowboy, my cattle dog, on Instagram (@cowboy_the_cattle_dog) — so Back 40 Dogs was born. The mission is simple: fuel every dog like a farm dog, for more memories together.

-Jack
Founder, Canine Nutritionist, & Dog Dad
Liquid Collagen restock
Sold out 7× restocked now

Due to high demand and a shortage of bovine collagen, this batch has a very high risk of selling out.

We make it in small, quality-controlled runs — and it's sold out seven times already. If it's in stock, don't wait on it.

CLAIM YOURS WHILE IN STOCK

Here's What Dog Owners Are Saying

B
Brittany R. · Follow
My old boy finally stopped the midnight scratching within a few weeks and his coat is SO soft now. Best part is I no longer have to have him on Apoquel. Both bottles showed up on time and customer support was helpful. Very happy so far!
1wLikeReply 👍❤47
S
Shay C.
Brittany R. any luck with the shedding?? my heeler covers the whole couch 😅
6dLikeReply
B
Brittany R.
Shay C. yes!! way less shedding and he seems to have way more energy on our walks too
6dLikeReply
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Rachel R.
I am the most skeptical dog mom EVER. Tried every itch spray and food swap for months. Ordered this and after a few weeks my girl’s constant licking has calmed down and her coat looks incredible. Genuinely mind blown. Fixed what the Vet couldn't help me with for years!!
1wLikeReply 👍❤32
T
Tina B.
RUN DON’T WALK!! My 11 yr old was slowing down bad. Two weeks in he’s trotting to the door again and the flaky skin is clearing up. My younger dog seems to have more energy too but not until after a month of it so I guess some dogs respond a little later. I keep telling everyone at the dog park to get some for your pup! My only regret is not starting them sooner on it, but glad I found this company now.
1wLikeReplyEdited 👍❤88

Our Dogs' Ancestors Thrived Before We Trusted Big Kibble More Than Our Dogs' Own Bodies

Dogs were built on real, whole food.

For thousands of years, they thrived on it — running farms, herding stock, living long, good lives.

Then, in just a few decades, we handed their bowls to big corporations.

Dogs' ancestors thriving on real food
Modern processed kibble

Modern kibble was built to be cheap and shelf-stable & convienient, not to nourish your dog.

Fillers and mystery "meal" replaced the real nutrients dogs are built to run on.

The result? Itchy skin, dull coats, and dogs slowing down before their time.

At Back 40, the answer isn't another pill or expensive prescription...it's going back to the basics.

Simple superfoods. Real, farm sourced nutrition that replenishes what their bodies used to make & what modern diets fail to give back.

We're fueling dogs for more good years together by feeding them what dog's used to eat on the farm.

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✓ 90-Day Money Back Guarantee ✓ Free Shipping*
Back 40 Liquid Collagen

How To Use

1

Measure

Fill the dropper to the line for your dog’s weight.

2

Drop

Easily squeeze it right onto their food. No pills, no mess.

3

Feed

Once a day. That’s it! They think it’s a bacon treat.

Our belief

Premium, Minimally Processed Nutrition Belongs in Every Dog's Bowl.

Real nutrition shouldn't be complicated.

We take premium, minimally processed ingredients and make them effortless to add to your dog's bowl. Even adding just one superfood can make a huge change in bringing their diet to life (and their diet gives them LIFE).

Made in USA, family owned, by people who care.

We believe in feeding dogs like farm dogs. The "back 40" is the remote back acres of a farm where dogs run, work, and thrive, living some of the longest, fullest lives on record.

Products truly built for our own dogs, shared with all.

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✓ 90-Day Money Back Guarantee ✓ Free Shipping*
Liquid Collagen

See What Back 40 Can Do For Your Dog

★★★★★ 4.8 out of 5 · 1337 verified reviews
★★★★★✓ Verified

His coat is lush, shiny and soft

Thor has just finished his first bone broth can and pumpkin along with the liquid collagen — he’s off apoquel now and for the 1st time with no meds, his ears are 75% cleaner and less itchy, his anxiety attacks have gone down 75% as well and his coat, OMG his coat is lush, shiny and soft. We regret not doing this sooner. Please invest in quality products for your furry baby.

Verified buyer · Diana V.
★★★★★✓ Verified

We LOVE the liquid collagen!

We have four dogs, all different sizes and ages and each with unique needs. Since adding the collagen to our routine, our senior Dachshund’s coat condition has improved and our GSD has been far less itchy. Highly recommend it!

Verified buyer · Michelle L.
★★★★★✓ Verified

Finally relief

I waited a few weeks before doing this review but after years of shots, lotions, potions and pills these products really work. Our dog’s itching and rashes are almost completely gone.

Verified buyer · Christina M.
★★☆☆☆✓ Verified

Didn’t see much change for us

Wanted to love this but after finishing a full bottle I honestly haven’t noticed much difference in my dog’s itching yet. He does like the taste and takes it fine, so I may give it another month before deciding — but so far it hasn’t done what I was hoping. Two stars for now.

Verified buyer · Kevin P.
★★★★★✓ Verified

Scratching and licking way less

It’s not quite been two weeks since I started my five year old golden on this collagen. I have noticed she is scratching and licking her paws a lot less! Her carpus area had gotten red and raw and hairless from her constant licking — both are pink and healthy again and the fur is growing back! By the way, they LOVE the taste of it.

Verified buyer · Melanie E.
★★★★★✓ Verified

This saved me HUNDREDS!

This supplement alone has helped me so much solving my dog’s itchiness, scratching and dandruff. The beef collagen has helped me not go so many times to the vet with my German Shepherd. After I tried Back 40 Dogs liquid collagen everything changed — his coat was vibrant and shiny, the itching stopped and he had more energy. I would recommend it to all dogs.

Verified buyer · Steven S.
★★★★★✓ Verified

Noticeable difference in energy and coat

I’ve been giving this collagen to my dog for a few weeks, and the change is amazing. She’s moving more easily, seems happier, and her coat looks healthier and shinier. I love that it’s easy to mix into her food and that she actually enjoys it. Knowing it supports her joints, skin, and overall health gives me peace of mind.

Verified buyer · Alyssa R.
★★★★★✓ Verified

My dog loves this stuff

My dog loves this stuff. I got it to help boost his system and help with skin issues. He hasn’t been on it long enough to see the full results yet but he can’t wait for it at meal time.

Verified buyer · Diane R.
★★★★★✓ Verified

Amazing stuff

Amazing stuff. My pup is doing great on it and I’ll be ordering again.

Verified buyer · Tricia G.