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Troo Premium Liquid Collagen

Troo Premium Liquid Collagen

  • Helps calm scratching, paw licking and hot spots.
  • Helps rebuild the skin barrier that keeps allergens out.
  • Supports a thicker, shinier coat.
  • Tasteless and free of chicken and beef. Just mix into food.
  • Third-party lab tested, made in a GMP-certified facility.
Dr. Bernstein, Veterinarian

Trusted by Dr. Bernstein

Veterinarian Vet Recommended
Only 13 left in stock Almost sold out

High demand due to our Fall Sale. Liquid collagen can't be mass-produced like cheap pills and chews, so quantities are limited.

PS: We only sell through this official site. If you see it on Amazon or eBay, it's not us.

Give Troo a full 60 days. If you don't see a real difference in the scratching, paw licking or coat, we'll refund every penny.

  • Try it daily for 60 days
  • Not happy? Just email us your order number
  • Full refund, even if the bottle is empty

Your dog's skin is protected by a barrier built from collagen. When it wears down, allergens slip through and the itch cycle starts: scratching, licking and hot spots.

How Troo helps: it gives the skin the collagen it's built from (Types I, II and III), plus Omega 3 and Vitamin C to support repair. It works on the barrier itself, and can be used alongside medication.

Mix into food once a day. It's tasteless, so most dogs never notice it.

Dog weightDailyBottle lasts
Under 25 lbsUnder 11 kg1 mLAbout 2 months
25 to 75 lbs11 to 34 kg2 mLAbout 1 month
Over 75 lbsOver 34 kg3 mLAbout 3 weeks

Sensitive tummy? Start with half a dose for the first few days.

Weeks 1 to 2The barrier rebuilds from the inside first, so it can look like nothing's happening. That's normal.
Weeks 2 to 3Less night scratching, calmer skin and quieter paws.
Weeks 6 to 8Stubborn hot spots and ear trouble start to settle, and the coat fills out.
OngoingDaily use keeps the barrier strong and the allergens out.

No change by day 60? The guarantee means you don't pay. Individual results vary.

Marine Collagen Types I & III900mg

The main building block of the skin barrier, pre-broken down to absorb easily.

UC-II Collagen Type II40mg

Helps support a calm, balanced skin response.

Omega 3400mg

Helps seal the barrier, lock in moisture and soothe dry, itchy skin.

Vitamin C50mg

Helps the body turn collagen into new, healthy skin.

Wild-caught marine source. No chicken, beef, dairy or fillers. Made in a GMP-certified facility. Other ingredient: purified water.

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Verified owner reviews

Real results from real dog owners.

Three common problems. One bottle. From owners who'd tried everything else first.

Maple's belly before and after Before After
★★★★★ Itching & hot spots

The 3am scratching stopped in two weeks.

Every night she'd wake us up clawing at her belly, and the hot spots kept coming back no matter what we tried. Two weeks in, the scratching had nearly stopped. Now she sleeps through the night, and so do we.

Maple, Golden Retriever Rachel T. · Leeds
Bailey's paws before and after Before After
★★★★★ Paw licking

His paws finally got a break.

He licked his paws until they were stained and sore between the toes. By week three the licking had stopped, and the redness is fading for the first time in years.

Bailey, Labrador Owen M. · Bristol
Rufus's ear before and after Before After
★★★★★ Ear trouble

Calm, clean ears again.

Every couple of weeks it was the same: red, smelly ears and a dog who pulled away when I tried to clean them. Around week four the cotton pad came back clean, and they've stayed that way since.

Rufus, Golden Retriever Hannah P. · Manchester

What's inside, and why it's there

Four ingredients, each with one job. Tap through to see what they do.

Marine collagen

Marine collagen

900 mg per serving Types I & III

The main building block of your dog's skin barrier. It's hydrolyzed into small peptides, so it's easy for the body to absorb and put to work.

UC-II collagen

UC-II collagen

40 mg per serving Type II

An undenatured form of collagen. It helps support a calm, balanced response in itchy, reactive skin.

Omega 3

Omega 3

400 mg per serving

Natural oils that help seal the barrier, lock in moisture and soothe dry, flaky skin while the collagen does its work.

Vitamin C

Vitamin C

50 mg per serving

Helps the body turn collagen into new, healthy skin tissue, so the other ingredients don't go to waste.

Other ingredient: purified water. Free from chicken, beef, dairy, gluten and soy.

The best supplement is the one your dog actually takes.

Chews get refused. Powders get left in the bowl. Troo is one tasteless dropper over their food, so they never miss a day.

Choose your bundle

What vets are saying

Why a skin-barrier-first approach makes sense for itchy dogs.

Dr. Bernstein with a patient

Dr. Bernstein

Veterinarian, integrative practice

Start with the skin barrier.

Most itchy dogs I see aren't short on treatments. They're short on a healthy skin barrier. Collagen, Omega 3 and Vitamin C give the body what it needs to support it, and Troo makes that easy to give every day.

Dr. Whitfield with a patient

Dr. Whitfield

Veterinarian, small animal practice

The one owners actually stick with.

With skin, consistency is everything, and owners struggle with chews and pills. A tasteless liquid over food is something people keep up with, and that's when you start to see a calmer, healthier coat.

Dr. Boyd with a patient

Dr. Boyd

Veterinarian, dermatology focus

A formula I'm comfortable suggesting.

I always check what's in the bottle first. A clear formula, no chicken or beef, no fillers. For allergy-prone dogs, what's left out matters as much as what's in it.

Before you order

Straight Answers For Itchy-Dog Owners.

Everything owners ask before their dog's first bottle.

Still have a question? A real person will get back to you. Contact us

Your dog's skin is protected by a barrier built from collagen. When it wears down, allergens slip through and the itch cycle starts. Troo gives the body the building blocks that barrier is made from: collagen Types I, II and III, plus Omega 3 and Vitamin C to support repair.

Not overnight, and we won't pretend otherwise. Most owners notice less scratching in 2 to 3 weeks. Stubborn hot spots usually take 6 to 8 weeks of daily use. That's exactly why you get 60 days to decide.

Because skin support only works if your dog gets it every day. Chews get refused and powders get left in the bowl. Troo is one tasteless dropper over food, with the collagen already broken down into small peptides so it's ready to absorb.

Once a day, mixed into food. Under 25 lbs (11 kg): 1 mL. 25 to 75 lbs (11 to 34 kg): 2 mL. Over 75 lbs (34 kg): 3 mL. One full dropper is 1 mL.

Troo is a simple liquid with no chews, fillers or binders. For sensitive dogs, start with half a dose for the first few days, then move up to the full amount. If you notice a softer stool, drop back to half for a few more days.

Marine collagen from wild-caught fish (Types I, II and III), Omega 3 and Vitamin C, in purified water. No chicken, beef, poultry or dairy, two of the most common triggers for itchy dogs. No fillers, made in a GMP-certified facility and third-party tested.

Troo contains no drugs, and many owners give it alongside their dog's current treatment. As with any supplement, let your vet know and keep any medication as prescribed. If your dog is pregnant, nursing or has a health condition, check with your vet first.

You get your money back. Give it daily, and if you don't see a real difference in the scratching, paw licking or coat within 60 days, email us for a full refund, even if the bottle is empty.

Still have a question? A real person will get back to you. Contact us