Daily nutritional support for dogs
MD1™ combines 16 carefully selected ingredients to support digestion, joints, skin and coat, teeth, immunity and everyday energy, without stacking multiple supplements.
5.0 from verified MD1™ owners
Real dogs, real routines
From verified MD1™ owners.
One product for joints. Another for digestion. Another for skin and coat.
Different doses, different routines, no clear picture of what is working.
MD1™ was designed as one coherent daily nutritional foundation, not another product to add to the stack.
This is MD1™
MD1™ is a daily formula built on a chicken bone broth base, with 16 functional ingredients measured to your dog’s weight. One simple routine on the food they already eat, in place of a shelf full of single-benefit products.
What one scoop covers
Health doesn’t happen in separate tubs. MD1™ is one blend, designed so each part supports the rest.
See all 16 ingredients
Joints & Movement
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.
10mg per scoop
Gut Health & Digestion
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.
1bn CFU per scoop
Gut Health & Digestion
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.
1,500mg per scoop
Joints & Movement
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.
250mg per scoop
Dental & Oral Health
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.
330mg per scoop
Immunity
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.
150mg per scoop
Joints & Movement
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.
300mg per scoop
Joints & Movement
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.
150mg per scoop
Gut Health & Digestion
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.
1bn CFU per scoop
Gut Health & Digestion
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.
815mg per scoop
Gut Health & Digestion
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.
250mg per scoop
Immunity
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.
150mg per scoop
Energy & Metabolic Function
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.
5mg per scoop
Immunity
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.
100mg per scoop
Energy & Metabolic Function
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.
124mg per scoop
Joints & Movement
A potent carotenoid antioxidant that helps neutralise oxidative stress. Emerging animal research suggests astaxanthin supports joint health and cellular protection by modulating inflammatory pathways.
3mg per scoop
The Marlo approach
Every ingredient has a clear nutritional role. Nothing is there to pad out the label.
Formulated around what your dog receives each day, not how impressive an ingredient looks on a label.
One considered blend supporting connected areas of everyday health.
A tasty bone broth base, one simple scoop and a tin designed to stay within reach.
Veterinary Reviews
The ingredients behind each area of support have been reviewed by veterinary experts, who explain what they do and the evidence behind them.
Paul Dowie
Veterinary Surgeon, BVM&S Cert Vet Derm
“MD1 has 16 ingredients all designed to improve health. Milk Thistle is a powerful antioxidant which supports liver health by neutralising free radicals. Since the liver is the body’s energy centre your pets’ activity level is supported. Calsporin and Enterococcus faecium are probiotic components. These and Inulin, the Chicory root active ingredient along with Pumpkin all act to help balance the gut microbiome which can strengthen immune function and energy levels.”
MD1 has 16 ingredients all designed to improve health. Of note is Milk Thistle which is a powerful antioxidant which supports liver health by neutralising free radicals. Since the liver is the body’s energy centre your pets’ activity level is supported.
Calsporin and Enterococcus faecium are probiotic components. These and Inulin, the Chicory root active ingredient along with Pumpkin all act to help balance the gut microbiome which can strengthen immune function and energy levels. Inulin is a soluble diet fibre and it increases butyrate, a short chain fatty acid which can help the integrity of the Blood brain barrier.
The Norwegian kelp in MD1 has strong evidence that it will reduce existing plaque and reduce tartar accumulation over 2-3 months. The Kelp is absorbed in the gut and produces a bioactive compound in the saliva.
Claudia de la Paz Pineda
Veterinary Surgeon, MRCVS
“As a vet, what I appreciate about MD1 is that joint care is built into the daily routine, using ingredients chosen with mobility in mind. UC-II® collagen stands out to me: canine studies have shown improvements in joint comfort and mobility, and it works differently to traditional glucosamine.”
As a vet, what I appreciate about MD1 is that joint care is built into the daily routine, using ingredients chosen with mobility in mind. UC-II® undenatured type II collagen stands out to me: canine studies have shown improvements in joint comfort and mobility, and it works through a different pathway to traditional glucosamine. Alongside it, green-lipped mussel adds a natural source of omega-3 fatty acids and glycosaminoglycans long associated with joint support. For owners, that means one simple daily step towards helping their dog stay comfortable doing the things they enjoy: the walks, the stairs, joining in with family life!
Karin Dreyer
Veterinary Surgeon, BVSc, MSc (Parasitology)
“I appreciate MD1’s multi-ingredient approach to joint health, especially for ageing dogs that may experience joint discomfort and declining mobility. The inclusion of green-lipped mussel and UC-II collagen is particularly appealing, alongside glucosamine and chondroitin, as these ingredients may support joint structure and function through different mechanisms.”
Arthritis, particularly osteoarthritis (OA), is a common cause of chronic pain and reduced mobility in dogs. I appreciate MD1’s multi-ingredient approach to joint health, especially for ageing dogs that may experience joint discomfort and declining mobility. The inclusion of green-lipped mussel and UC-II collagen is particularly appealing, alongside glucosamine and chondroitin, as these ingredients may support joint structure and function through different mechanisms.
Omega-3 fatty acids may also help modulate inflammation and support joint comfort. I value the convenience of combining these ingredients in one daily supplement, making consistent joint support easier for owners to incorporate into their dogs’ daily routine.
Anna Robertson
Registered Veterinary Nurse
“The formulation is evidence-led and thoughtfully balanced rather than overloaded with unnecessary ingredients. From a clinical perspective, it gives me confidence knowing the team has clearly considered safety with quality and daily usability.”
As a Registered Vet Nurse, I spend a lot of time talking to owners about prevention rather than reaction. Many people only start thinking about supplements once their dog is already struggling with joints, digestion or skin issues. What stands out to me about MD1 is that it has been designed to support overall wellbeing proactively, with ingredients that work together to support multiple areas of health in one simple routine.
The formulation is evidence-led and thoughtfully balanced rather than overloaded with unnecessary ingredients. From a clinical perspective, it gives me confidence knowing the team has clearly considered safety with quality and daily usability. It is the sort of supplement I would feel comfortable recommending to owners looking to support long-term health and quality of life.
Made for every day
Designed to fit into how you already feed your dog. Suitable for dry, wet or fresh food.
Shop MD1™
Use the feeding guide to measure the right number of scoops for your dog’s weight.
Sprinkle over food as a daily topper, or mix with a little warm water to make a collagen broth.
Keep the tin by the bowl, so one scoop becomes part of every day.
The free Marlo Wellness Score
Answer a few questions about your dog’s day-to-day and get their Wellness Score: a simple baseline across the things that shape everyday wellbeing. Check in again over time to see what’s changing.
Why we built Marlo
We wanted to do more to support Marlo’s long-term health, but the options were either narrowly targeted, difficult to compare or required a cupboard full of tubs.
So we set out to create one considered daily foundation: thoughtfully formulated, easy to give and designed to become part of real life with a dog. The best daily product is one you understand, your dog enjoys and you actually remember to give.
Lara, Founder of Marlo
Our promise
Every first order is covered. If it’s not right for your dog, tell us and we’ll refund you.
No minimum term and no cancellation fee.
A stainless steel tin and perfect-dose scoop arrive with your first order.
MD1™ (Marlo Daily) is a daily powder formula for dogs with 16 purposefully selected functional ingredients. It is designed as a daily nutritional foundation, not a targeted fix for one thing.
Mix the scoops for their weight into their food daily: up to ½ scoop under 5kg, 1 from 5-11kg, 2 from 11-34kg and 3 over 34kg. It works as a dry topper or mix with a little warm water to make a gravy. Most dogs prefer the gravy method.
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.
MD1™ is formulated for adult dogs. The feeding guide scales by weight up to a maximum of 3 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.
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.
Yes. No minimum term, no cancellation fee. We'd rather earn your loyalty through results. Your first order also comes with a money-back guarantee: 90 days on 3-month plans, and 30 days on monthly plans and one-time purchases. See terms.
I’m ready
Choose your dog’s weight, select one-off or subscription, and get a free tin and scoop with your first order.
Shop MD1™I want to understand my dog first
A free baseline of your dog’s everyday health, with a score you can re-check over time.
Take the assessment
Sprinkle MD1 over the bowl to reveal your mystery gift.
