Science-backed daily supplement designed to support your dog’s whole system.
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 moreDeveloped 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
How to use MD1:
A simple daily routine
Designed to fit into how you already feed your dog
Pre-order MD1™Measure the dose
Use the feeding guide to measure the right number of scoops based on your dog’s weight
Topper or broth
Sprinkle over food as a daily topper, or mix with a small amount of warm water to create a collagen broth
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
Blueberry Extract
Calsprin® Bacillus velezensis (Probiotic)
Chicken Bone Broth Powder
Chondroitin Sulphate (Avian 90%)
Coconut MCT Oil (Caprylic C8)
Enterococcus faecium (Probiotic)
Fish Oil (Omega-3; EPA/DHA)
Glucosamine HCl
Green Lipped Mussel (Defatted)
Inulin (Chicory Root Fibre)
L-Carnitine
Partially Hydrolysed Guar Gum (PHGG)
Pumpkin Fruit Whole Powder
Spirulina Powder
Taurine
UC-II® (Undenatured Type II Collagen)
Why MD1
Different formats work for different dogs. Here’s how MD1 compares.
MD1
Chews
Pills
Delivered monthly

MD welcome kit
Free with your first order
Forever tin
Marlo forever canister and scoop
MD1™ Daily Nutrition
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?
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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 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.
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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.
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What are the 16 ingredients and what do they do?
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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.
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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.
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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.
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How do I give it to my dog?
Mix one level scoop (4.5g) 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.
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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.
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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.
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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.
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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.
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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.
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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.
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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.
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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.
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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.
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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.