BARK RESERVEFind your dog’s plan

01Daily joint nutrition for dogs

Better days. Built from within.

Premium daily joint nutrition for dogs. Seven studied actives in one beef-flavoured granule, dosed to your dog’s weight, with every amount printed on the pouch.

Find your dog’s plan Explore the formula
The BarkReserve Core pouch: cream with gold foil, the engraved French Bulldog crest, Core Topper, daily joint support, natural beef flavour, 200 g. One blend for all dogs, once daily, dry granules, scooped onto food.
Daily joint supportSeven actives, every amount printed
Natural beef flavourLiver, muscle and tallow coating
One blend for all dogsOnce daily, dry granules
200 g pouchScooped onto food
7Actives, each with research in dogs
1Level scoop per 10 kg a day
0Proprietary blends

02Science meets longevity

Built for the years that matter most.

Too many joint supplements are one or two actives and a lot of filler. Ours is built from the research.

The BarkReserve Core pouch beside a level scoop of beef-coated granules

Turn a few around and the pattern repeats: a well-known name on the front, a token amount on the back, and the rest of the scoop there to make up the weight.

BarkReserve Core started from the other end. We read the published dog studies first, then built an all-in-one formula: seven actives, each with research in dogs behind it and a job to do, every amount printed on the pouch. The granule is mostly active, with collagen peptides as its body, and no sugar, glycerin, dairy, soft-chew binders or synthetic preservatives.

And it is layered in time. PEA and eggshell membrane were studied for change in the first weeks, green-lipped mussel carries the middle, and collagen peptides and UC-II do the slow, structural work that is still building at month three. All of it comes in one daily scoop of soft beef-liver granules that disappear into dinner.

03Meet the seven

Seven actives. Read the research, not the claims.

Researched before we formulated. Every ingredient was chosen from the published dog research. Here is the study behind each one, with a link to the paper.

  1. GELITA · Slow layer · month 3 and on

    The body of the granule. Porcine type I peptides, the form used in the dog study. Supports healthy cartilage, tendons and ligaments, helping maintain strong, flexible joints and everyday mobility.

    The oral intake of specific Bioactive Collagen Peptides (BCP) improves gait and quality of life in canine osteoarthritis patients: a translational large animal model for a nutritional therapy option.

    Dobenecker B et al. · PLoS One · 2024

    Design
    Placebo-controlled · Double-blind
    Dogs
    31 dogs with naturally occurring osteoarthritis, 12 weeks
    Measured
    Gait on a treadmill with four force plates, and an owner pain questionnaire (Canine Brief Pain Inventory).
    PubMed 39298537 ↗

  2. Medium layer · months 1–3

    Whole freeze-dried New Zealand mussel, lipid content stated on every batch certificate. Naturally rich in marine nutrients that support joint comfort, flexibility and healthy movement.

    Evaluating complementary therapies for canine osteoarthritis. Part I: green-lipped mussel (Perna canaliculus).

    Hielm-Björkman A et al. · Evidence-Based Complementary and Alternative Medicine · 2009

    Design
    Randomised · Double-blind · Placebo and carprofen controls
    Dogs
    45 dogs with osteoarthritis, 8 weeks
    Measured
    Veterinary mobility index, two force-plate measures and owner-scored chronic pain.
    PubMed 18955269 ↗

  3. NEM® · Fast layer · weeks 1–4

    Naturally occurring collagen, elastin and glycosaminoglycans. Early onset in the research. Naturally contains collagen and other connective-tissue components to support joint flexibility, comfort and mobility.

    Effectiveness of NEM® brand eggshell membrane in the treatment of suboptimal joint function in dogs: a multicenter, randomized, double-blind, placebo-controlled study.

    Ruff KJ et al. · Veterinary Medicine: Research and Reports · 2016

    Design
    Randomised · Double-blind · Placebo-controlled · Eight clinics
    Dogs
    51 dogs with suboptimal joint function, 6 weeks
    Measured
    Joint function and pain scores, at about 13.5 mg per kg once a day.
    PubMed 30050844 ↗

  4. UC-II® · Slow layer · month 3 and on

    The studied 40 mg a day. Works through the immune system, not through bulk. A specialised collagen that supports healthy joint function, flexibility and comfortable movement.

    Evaluation of the effects of undenatured type II collagen (UC-II) as compared to robenacoxib on the mobility impairment induced by osteoarthritis in dogs.

    Stabile M et al. · Veterinary Sciences · 2019

    Design
    Randomised · Controlled · Prospective
    Dogs
    60 client-owned dogs with osteoarthritis, 30 days
    Measured
    Load, mobility and clinical scores, alongside a group on robenacoxib.
    PubMed 31487772 ↗

    Therapeutic efficacy and safety of undenatured type II collagen singly or in combination with glucosamine and chondroitin in arthritic dogs.

    D’Altilio M et al. · Toxicology Mechanisms and Methods · 2007

    Design
    Placebo-controlled · Four groups
    Dogs
    20 arthritic dogs, 120 days
    Measured
    Overall pain, pain on limb manipulation and exercise-associated lameness, monthly.
    PubMed 20020968 ↗

  5. Levagen+ · Fast layer · weeks 1–4

    Palmitoylethanolamide, a fatty-acid compound dogs make themselves. The fast layer. Supports joint comfort, helping dogs move more comfortably and stay active.

    Levagen+ (palmitoylethanolamide) alleviates joint pain and reduces the impact of joint pain in canines and felines: a double-blind, placebo-controlled, randomized clinical trial.

    Briskey D et al. · Frontiers in Veterinary Science · 2026

    Design
    Randomised · Double-blind · Placebo-controlled
    Dogs
    50 dogs and 50 cats with joint pain, 6 weeks
    Measured
    Owner-completed Canine Brief Pain Inventory at baseline and weeks 2, 4 and 6.
    PubMed 41767672 ↗

  6. Familiar name · real amount

    The name owners look for, at a real amount, from a non-shellfish source. A shellfish-free source of glucosamine that helps maintain healthy cartilage, supports joint cushioning and promotes long-term joint health.

    Randomised double-blind, positive-controlled trial to assess the efficacy of glucosamine/chondroitin sulfate for the treatment of dogs with osteoarthritis.

    McCarthy G et al. · The Veterinary Journal · 2007

    Design
    Randomised · Double-blind · Carprofen as positive control
    Dogs
    35 dogs with hip or elbow osteoarthritis, 70 days
    Measured
    Vet scores for pain, weight-bearing and severity on days 14, 42 and 70. Glucosamine HCl was given with chondroitin sulfate.
    PubMed 16647870 ↗

    Included at a real amount (25 mg per kg) from a plant-fermented, shellfish-free source. In dogs it has been studied with chondroitin, with mixed results across trials, so we make no claim for it on its own.

  7. Muscle · daily

    Supports normal muscle metabolism in older dogs. Supports cellular energy production and healthy muscle function, helping dogs maintain strength and activity.

    Utilisation of supplemented l-carnitine for fuel efficiency, as an antioxidant, and for muscle recovery in Labrador retrievers.

    Varney JL et al. · Journal of Nutritional Science · 2017

    Design
    Supplemented vs control group · Two experiments
    Dogs
    56 Labrador retrievers on a running programme (a first experiment had 40), 14 weeks
    Measured
    Activity, body composition (lean mass) and muscle-recovery markers after running. An exercise study, not a joint trial.
    PubMed 28620483 ↗

04How we formulate

Four rules, written into every scoop.

01 / 04

Every amount on the label.

Seven actives, each printed with its exact amount per scoop. No proprietary blend, nothing to take on trust.

As printed on the back of every pouch.

Active ingredients per scoop

  • Bioactive collagen peptides2,000 mg
  • Palmitoylethanolamide (PEA)200 mg
  • Plant-fermented glucosamine HCl250 mg
  • New Zealand green-lipped mussel190 mg
  • Eggshell membrane135 mg
  • L-carnitine L-tartrate100 mg
  • Undenatured type II collagen20 mg

05The formula, deconstructed

One granule.

Collagen peptides form the body of every granule. Six more actives sit inside it, and a thin beef-liver coating wraps the outside. Scroll to take it apart.

Particles drawn in proportion to each active’s weight per scoop. The coating ring is the flavour, kept apart from the actives.

06How long it takes

One formula, layered in time.

It is a routine, not a switch. Here is the honest curve. Each bar is how long an ingredient was given to dogs in its study, with a dot wherever the dogs were measured.

What to expect
Weeks 1–3The fast layer is at work. Most dogs just think dinner got better.
Weeks 4–8This is when owners in the ingredient studies tended to notice easier starts after rest.
Month 3 and onThe collagen layer keeps building. Daily use is the whole point.

Fast layer

Medium layer

Slow layer

Alongside

Selected study

FEMUR PATELLA TIBIA FABELLA FIBULA
ARTICULAR CARTILAGE
MENISCUS
QUADRICEPS PATELLAR LIGAMENT CRANIAL CRUCIATE CAUDAL CRUCIATE GASTROCNEMIUS
JOINT CAPSULE SYNOVIAL FLUID

07Understanding the canine joint

Inside the stifle, layer by layer.

Bone

Simplified side view of a dog’s knee, with a fine-line study of each structure. Ingredients are listed where their research or composition relates to that tissue.

08A daily ritual

Science, folded into breakfast.

A grey-muzzled Labrador walking beside its owner on a sunlit path

07:00

The slow start.

Older dogs still love the walk. It is the first steps after rest that take longer, and the pause at the car door.

The open BarkReserve pouch on its side with soft, beef-coated granules spilling onto stone

07:30

One level scoop.

One level scoop per 10 kg, onto the food they already eat. A beef-liver granule, so it reads as breakfast, not medicine.

A merle Great Dane leaning its chin on a smiling man’s shoulder in a black-and-white studio

Every day

A routine, not a switch.

The fast layer works in weeks; the collagen layer keeps building past month three. Daily is the whole point.

Every dog

One blend. Every breed.

The formula never changes between plans. Only the number of scoops does, set by your dog’s weight.

09Personalised dose

Dosed to the dog, not the pack.

The rule printed on every pouch: one level scoop per 10 kg (22 lb) of body weight, to the nearest half scoop, minimum one. Enter your dog’s weight to see the daily scoop and what it delivers; the quiz then builds the plan.

lb

Checked against the label. The pouch prints four examples: 18 lb, 1 scoop · 45 lb, 2 scoops · 70 lb, 3 scoops · 100 lb, 4½ scoops. Tap one to test it.

2 level scoops a day20.4 kg dog

Each day this deliversLabel × scoops

    Feeding guidance from the label. If your dog is on medication, has a health condition or is pregnant, check with your vet first.

    Next step

    Get your dog’s plan in 60 seconds.

    Plans start from $19.99 a month.

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    A merle French Bulldog in a black-and-white studio portrait
    Merle French Bulldog · studio portrait

    10Our story

    It started with the dog on the label.

    The French Bulldog in the crest is real. She is the founder’s own dog, a merle Frenchie who hit her senior years the way most dogs do: a slower start after naps, a pause at the car door, walks that quietly got shorter.

    So we did what any owner does and bought the joint supplements. Then we read the labels properly. The same few ingredients everywhere, amounts hidden behind “proprietary blend” or missing altogether, and the actives that the dog research actually points to either absent or present in a trace so the name could sit on the front. Ingredients there for stacking, not for the dog.

    Researched with care, made with love: a supplement you can trust with the dog who is family.

    Better days. Built from within.

    Sixty seconds tells you the right plan for your dog: the daily scoop, the pouch size and how often it ships.

    Find your dog’s plan