MD1™ All-in-One Advanced Dog Supplement

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.

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.

Find the full breakdown of every ingredient, the science behind each one and why we included it here.

Yes. We select each ingredient and its amount using the best available evidence, including published research, established nutritional guidance and practical veterinary experience. The type and strength of evidence varies between ingredients, so we explain the basis for each one on our ingredients page.

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.

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.

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.

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.

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.

MD1™ was created by Lara Magnus-Moore, after failing to find a properly dosed daily supplement for her 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.

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.

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 research behind any ingredient, we'll share the studies. Transparency isn't a marketing word for us. It's how we built the formula.