What makes MD1 different, at every scoop

Whole body support

Designed to support gut, joints, skin, immunity, and brain – every day

Adjustable by weight

Scoop-based dosing scales simply with your dog’s size and needs

No fillers or binders

Formulated without unnecessary additives or flavour-led masking

Built with experts

Developed alongside UK pet nutritionists and vets

Formulated with care

Learn more

Developed in collaboration with UK pet nutritionists and vets, and manufactured to rigorous quality standards

Quality-first standards

Made in facilities that follow GMP-aligned processes, with routine batch testing and ingredient traceability

Designed with experts

Developed alongside pet nutritionists and vets to support whole-body health without unnecessary fillers

Manufactured in the UK

Produced by one of the world’s most established supplement manufacturers, trusted by leading veterinary brands

Expert Perspective

One of the biggest challenges in pet health is consistency. Owners often end up juggling multiple supplements for joints, digestion, skin or dental care, which can quickly become difficult to maintain. What stands out about MD1 is how thoughtfully it simplifies that process into one easy daily routine without compromising on quality.

How to use MD1:
A simple daily routine

Designed to fit into how you already feed your dog

Pre-order MD1™
Step 1

Measure the dose

Use the feeding guide to measure the right number of scoops based on your dog’s weight

Step 2

Topper or broth

Sprinkle over food as a daily topper, or mix with a small amount of warm water to create a collagen broth

Step 3

Use daily

See noticeable improvements in digestion, energy, and overall health for most dogs with consistent use

16 functional ingredients for long-term wellbeing

Read the science
Astaxanthin Beta-Glucans (from Yeast) Biotin (Vitamin B7) Bilberry Extract Calsporin® Bacillus velezensis (Probiotic) Chicken Bone Broth Powder Chondroitin Sulphate (Avian) Enterococcus faecium (Probiotic) Glucosamine Green Lipped Mussel Inulin (Chicory Root Fibre) Milk Thistle Extract (80% Silymarin) Norwegian Kelp (Ascophyllum nodosum) Pumpkin (Whole Fruit Powder) Spirulina Powder UC-II® (Undenatured Type II Collagen)
Astaxanthin
Astaxanthin
A potent carotenoid antioxidant that helps neutralise oxidative stress. Emerging animal research suggests astaxanthin supports joint health and cellular protection by modulating inflammatory pathways.
Beta-Glucans (from Yeast)
Beta-Glucans (from Yeast)
Natural fibres from the yeast cell wall, long studied for their role in priming the body's everyday immune defences. Research in dogs shows beta-glucans help support a healthy, responsive immune system.
Biotin (Vitamin B7)
Biotin (Vitamin B7)
An essential B vitamin and metabolic co-factor that supports healthy skin and a glossy coat. Research in dogs shows biotin helps maintain skin and coat condition, while its central role in fat and energy metabolism supports steady everyday vitality.
Bilberry Extract
Bilberry Extract
Rich in anthocyanins, powerful plant antioxidants that support vascular and cellular health. Research in animals shows bilberry compounds help combat oxidative stress and support visual and immune function.
Calsporin® Bacillus velezensis (Probiotic)
Calsporin® Bacillus velezensis (Probiotic)
A spore-forming probiotic designed for stability and survivability through the digestive tract. Bacillus species have demonstrated benefits in improving nutrient digestibility and immune markers in dogs in controlled feeding studies.
Chicken Bone Broth Powder
Chicken Bone Broth Powder
Naturally rich in collagen peptides, amino acids and minerals that support connective tissue and gut integrity. Bone-derived collagen has been shown to support joint structure and digestive health through glycine and proline content.
Chondroitin Sulphate (Avian)
Chondroitin Sulphate (Avian)
A key cartilage component that helps maintain joint cushioning and resilience. Veterinary studies indicate that chondroitin, particularly when combined with glucosamine, supports joint comfort and mobility in dogs with degenerative joint changes.
Enterococcus faecium (Probiotic)
Enterococcus faecium (Probiotic)
A clinically researched probiotic strain widely used in canine nutrition to support digestive balance. Studies in dogs show E. faecium can improve stool quality and support recovery from gastrointestinal disturbance by stabilising gut microbial populations.
Glucosamine
Glucosamine
A structural precursor for glycosaminoglycans, essential components of cartilage. Clinical trials in dogs have shown glucosamine supplementation can improve mobility scores and reduce signs of osteoarthritis over time.
Green Lipped Mussel
Green Lipped Mussel
A natural source of omega-3 fatty acids, glycosaminoglycans and bioactive lipids. Multiple veterinary trials show green-lipped mussel supplementation can improve joint flexibility and reduce discomfort in dogs with osteoarthritis.
Inulin (Chicory Root Fibre)
Inulin (Chicory Root Fibre)
A well-studied prebiotic fibre that selectively feeds beneficial gut bacteria. Research demonstrates that inulin increases short-chain fatty acid production, particularly butyrate, which supports intestinal barrier integrity and immune modulation.
Milk Thistle Extract (80% Silymarin)
Milk Thistle Extract (80% Silymarin)
Standardised for silymarin, a group of potent plant antioxidants that support the liver and the body's natural defences against oxidative stress. Research in dogs and other animals shows silymarin helps protect cells and support healthy liver function.
Norwegian Kelp (Ascophyllum nodosum)
Norwegian Kelp (Ascophyllum nodosum)
A nutrient-rich cold-water seaweed traditionally valued for oral health. Research in dogs shows daily Ascophyllum nodosum helps keep plaque and tartar in check and supports fresher breath.
Pumpkin (Whole Fruit Powder)
Pumpkin (Whole Fruit Powder)
A natural source of soluble and insoluble fibre that supports stool regularity. Pumpkin has long been used in veterinary nutrition to help normalise digestive transit and maintain healthy bowel function.
Spirulina Powder
Spirulina Powder
A nutrient-dense microalgae rich in protein, antioxidants and phytonutrients. Research in dogs indicates spirulina supplementation may support immune response and reduce oxidative stress markers.
UC-II® (Undenatured Type II Collagen)
UC-II® (Undenatured Type II Collagen)
Undenatured type II collagen shown in canine studies to support joint comfort through immune-mediated pathways. Research in dogs demonstrates significant improvements in mobility and activity levels compared to placebo.

Made to fit into real routines. If it's not right for your dog, you can cancel anytime – no pressure, no commitment.

90-day money-back guarantee
Update, pause or cancel anytime
Human-grade ingredients

Why MD1

Different formats work for different dogs. Here’s how MD1 compares.

Daily foundation

MD1

Chews

Pills

Active ingredient load
16 active ingredients per scoop
Typically under 50% active
Varies
Daily routine friendly
Built for daily use
Usually, but prone to treat fatigue
Frequently refused
Whole body support
Five health systems in one scoop
Single-benefit by design
Targeted intervention only
Adjustable dosing
Tailored by weight
Fixed dose
Sometimes
Fillers & binders
None. 4.2g of active ingredient
Almost always to bind the chew
Sometimes
Palatability
Perfect for fussy dogs
High initially, but novelty wears off
Commonly refused
Ideal use case
Daily nutritional foundation
Single, specific needs
Targeted interventions

Delivered monthly

MD welcome kit

Free with your first order

Forever tin

Marlo forever canister and scoop

MD1™ Daily Foundation

30-day supply, dosed according to your dog’s size

Refilled sustainably

Recyclable refills, delivered when you need them

MD1™ Monthly Pouch

30-day supply, dosed according to your dog’s size

Questions?

  • What is MD1™ ?

    MD1™ (Marlo Daily) is a daily powder supplement for dogs containing 16 science-backed functional ingredients. It's designed to be the one daily essential your dog needs, covering gut health, joint support, immune function, dental health and longevity in a single scoop. Think of it as the daily foundation for your dog's health, not a targeted fix for one thing.

  • Why powder instead of soft chews or capsules?

    Soft chews contain up to 70% inactive ingredients: binders, fillers and palatability agents that leave very little room for what actually does something. Powder lets us hit functional doses across 16 ingredients without compromise. You get more of what works, none of what doesn't.

  • What are the 16 ingredients and what do they do?
  • Are the ingredients clinically dosed?

    Where the clinical evidence supports it, yes. We formulate to the doses used in the studies that established each ingredient's efficacy, not the trace amounts that look good on a label but don't do much in practice. A small number of ingredients are included at levels supported by years of anecdotal use in veterinary nutrition rather than formal clinical trials. We're transparent about which is which on our ingredients page.

  • Is MD1™ safe for all dogs?

    MD1™ is formulated for adult dogs. The feeding guide scales by weight up to a maximum of 4 scoops daily. If your dog has a specific health condition, is pregnant or is on medication, check with your vet first, as you would with any supplement.

  • Where is MD1™ made?

    In the UK, in partnership with one of the world's leading veterinary supplement manufacturers. Every formula goes through review by a team of veterinary nutritionists and formulation scientists before it gets made. For us that meant our ingredient choices, dosing rationale and quality standards being stress-tested by people who spend their careers in this field. EFSA-approved ingredients, UK-manufactured, no corners cut.

  • How do I give it to my dog?

    Mix one level scoop (4.2g) per 10kg of body weight into their food daily. It works as a dry topper or mix with a little warm water to make a gravy. Most dogs prefer the gravy method.

  • Does my dog need to adjust to it?

    We recommend starting at half the recommended amount for the first week. This gives their gut time to settle, which is particularly relevant for dogs with sensitive stomachs. From day 8, move to the full serving.

  • How long will one pouch last?

    It depends on your dog's weight. Our subscription pricing is structured to give you a monthly supply for your dog's size, so you're always getting the right amount at the right price.

  • How should I store it?

    Once opened, store in a cool, dry place or refrigerate to preserve freshness. Best used within 90 days of opening. We include a branded forever tin with first orders, made for exactly this purpose.

  • Can I cancel anytime?

    Yes. No minimum term, no cancellation fee. We'd rather earn your loyalty through results. Every first order also comes with a 90-day money back guarantee, so if you're not happy, neither are we.

  • What is the Founding Members programme?

    The first 100 customers to pre-order become Founding Members and receive 25% off for their first three months. It's our way of recognising the people who backed us before the shelves were stocked.

  • When will my order ship?

    We're in production now with first shipments expected on 1st June 2026. You won't be charged for the second month of your subscription until 1st July 2026.

  • Why pre-order rather than wait?

    Founding Member pricing is 25% off your first three months and it disappears once all 100 spots are taken. It won't come back at launch. Beyond the discount, this is a small founder-led brand built by dog owners for dog owners. The first 100 customers aren't just early buyers, they're the people who shape what Marlo becomes. That means direct access to us, genuine influence over where the brand goes, and being part of something from the very beginning rather than just another subscriber down the line.

  • Who's behind this?

    MD1™ was created by Aaron Magnus-Moore, after failing to find a properly dosed daily supplement for his working line Golden Retriever, Marlo. The brand is named after him. The frustration was real and the product is the answer to it. The formula was developed in consultation with leading veterinary nutritionists and formulation scientists, so while the motivation was personal, the science behind it isn't.

  • How is MD1™ different from what's already on the market?

    Most pet supplements do one thing: joints, or gut, or coat. MD1™ is a daily comprehensive, the equivalent of replacing a shelf of single-benefit products with one scoop. The closest human equivalent is AG1. That category doesn't yet exist for dogs. We're building it.

  • Why should I trust the formula?

    Every ingredient is EFSA-approved, the product is manufactured in the UK and we publish the full ingredient list with exact dosages. No proprietary blends, no hidden quantities. If you want to cross-check the researcg behind any ingredient, we'll share the studies. Transparency isn't a marketing word for us; it's how we built the formula.

Still have questions? Contact us →